Exhibit 4.1

SECURITIES PURCHASE AGREEMENT

This Securities Purchase Agreement (this “Agreement”) is dated as of December 2, 2002, among SureBeam Corporation, a Delaware corporation (the “Company”), and the purchasers identified on the signature pages hereto (each a “Purchaser” and collectively the “Purchasers”).

WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to Section 4(2) of the Securities Act of 1933 (the “Securities Act”), and Rule 506 promulgated thereunder, the Company desires to issue and sell to the Purchasers, and the Purchasers, severally and not jointly, desire to purchase from the Company, shares of the Company’s Class A common stock, $.001 par value, and certain Warrants (as defined below) for an aggregate purchase price of up to $30,000,000 but not less than $20,000,000, as more fully described in this Agreement.

NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for other good and valuable consideration the receipt and adequacy of which are hereby acknowledged, the Company and the Purchasers agree as follows:

ARTICLE I.
DEFINITIONS

1.1           Definitions.  In addition to the terms defined elsewhere in this Agreement, the following terms have the meanings indicated:

“Affiliate” means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common control with a Person, as such terms are used in and construed under Rule 144 under the Securities Act.  With respect to a Purchaser, any investment fund or managed account that is managed on a discretionary basis by the same investment manager as such Purchaser will be deemed to be an Affiliate of such Purchaser.

“Business Day” means any day except Saturday, Sunday and any day which shall be a federal legal holiday or a day on which banking institutions in the State of New York are authorized or required by law or other governmental action to close.

“Closing” means the closing of the purchase and sale of the Securities pursuant to Section 2.1

“Closing Date” means the date of the Closing.

“Commission” means the Securities and Exchange Commission.

“Common Stock” means the Class A common stock of the Company, $.001 par value, and any securities into which such common stock may hereafter be converted.

“Common Stock Equivalents” means any securities of the Company or the Subsidiaries which would entitle the holder thereof to acquire shares of Common Stock, including, without limitation, any debt, preferred stock or other instrument that is at any time convertible into or exchangeable for, or otherwise entitles the holder thereof to receive, shares of Common Stock.

“Company Counsel” means Luce, Forward, Hamilton & Scripps LLP, counsel to the Company.

“Effective Date” means the date that the Registration Statement is first declared effective by the Commission.

“Eligible Market” means any of the New York Stock Exchange, the American Stock Exchange, the Nasdaq National Market or the Nasdaq SmallCap Market.

“Exchange Act” means the Securities Exchange Act of 1934, as amended.

“knowledge”  references to the Company’s “knowledge” when used herein, shall mean the actual and/or constructive knowledge of Messrs. Lawrence A. Okberfell, President and Chief Executive Officer and David A. Rane, Senior Vice President and Chief Financial Officer as well as any other executive officer of the Company.

“Nasdaq” means the Nasdaq National Market.

“Per Unit Purchase Price” shall be $4.75.

“Person” means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind.

“Proceeding” means an action, claim, suit, investigation or proceeding (including, without limitation, an investigation or partial proceeding, such as a deposition), whether commenced or threatened.

“Registration Statement” means a registration statement meeting the requirements set forth in the Registration Rights Agreement and covering the resale by the Purchasers of the Shares and the Warrant Shares.

“Registration Rights Agreement” means the Registration Rights Agreement, dated as of the date of this Agreement, among the Company and the Purchasers, in the form of Exhibit B hereto.

“Rule 144,” means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such Rules may be amended from time to time, or any similar rule or

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regulation hereafter adopted by the Commission having substantially the same effect as such Rule.

“Securities” means the Shares, the Warrants and Warrant Shares.

“Securities Act” means the Securities Act of 1933, as amended.

“Shares” means the shares of Common Stock issued to the Purchasers pursuant to this Agreement.

“Strategic Transaction” means a transaction or relationship in which the Company issues shares of Common Stock to a Person which is, itself or through its Subsidiaries, an operating company in a business synergistic with the business of the Company and in which the Company receives benefits in addition to the investment of funds, but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital or to an entity whose primary business is investing in securities.

“Subsidiary” means any subsidiary of the Company that is listed in the SEC Reports.

“Trading Day” means: (a) a day on which the shares of Common Stock are traded on an Eligible Market, or (b) if the shares of Common Stock are not listed on an Eligible Market, a day on which the shares of Common Stock are traded in the over–the–counter market, as reported by the OTC Bulletin Board, or (c) if the shares of Common Stock are not quoted on the OTC Bulletin Board, a day on which the shares of Common Stock are quoted in the over–the–counter market as reported by the National Quotation Bureau Incorporated (or any similar organization or agency succeeding its functions of reporting prices); provided, that in the event that the shares of Common Stock are not listed or quoted as set forth in (a), (b) and (c) hereof, then Trading Day shall mean a business day.

“Transaction Documents” means this Agreement, the Registration Rights Agreement, the Transfer Agent Instructions, the Warrants and any other documents or agreements executed in connection with the transactions contemplated hereunder.

“Transfer Agent Instructions” means the Company’s  Transfer Agent Instructions in the form of Exhibit C.

“Warrant” means a Common Stock purchase warrant, in the form of Exhibit A.

“Warrant Shares” means the shares of Common Stock issuable upon exercise of the Warrants.

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ARTICLE II.
PURCHASE AND SALE

2.1           Closing.  Subject to the terms and conditions set forth in this Agreement, at the Closing the Company shall issue and sell to the Purchasers, and the Purchasers shall, severally and not jointly, purchase from the Company, the Shares and the Warrants, for the aggregate purchase price set forth below such Purchaser’s address on the signature pages to this Agreement.  The Closing shall take place at the offices of the Company on the date hereof or at such other location or time as the parties may agree, provided, that the Closing shall not take place and this Agreement shall be null and void ab initio unless at least $20,000,000 in immediately available funds has been deposited by some or all of the Purchasers in an escrow account created pursuant to that certain escrow agreement between the Company, Roth Capital Partners, LLC and Pacific Mercantile Bank, prior to 5:00 p.m. eastern standard time on December 3, 2002.

2.2           Closing Deliveries.  (a)  At the Closing, the Company shall deliver or cause to be delivered to each Purchaser the following:

(i)            a certificate evidencing a number of Shares equal to the subscription amount indicated below such Purchaser’s name on the signature page of this Agreement divided by the Per Unit Purchase Price, registered in the name of such Purchaser;

(ii)           a Warrant, registered in the name of such Purchaser, pursuant to which such Purchaser shall have the right to acquire the number of shares of Common Stock equal to 25% of the Shares to be issued to such Purchaser at the Closing;

(iii)          a legal opinion of Company Counsel, in agreed form, addressed to the Purchasers;

(iv)          a Registration Rights Agreement duly executed by the Company; and

(v)           the Transfer Agent Instructions executed by the Company and delivered to and acknowledged by the Company’s transfer agent.

(b)           At the Closing, each Purchaser shall deliver or cause to be delivered to the Company the following:

(i)            the subscription amount indicated below such Purchaser’s name on the signature page of this Agreement, in United States dollars and in immediately available funds, by wire transfer to an account designated in writing by the Company for such purpose; and

(ii)           a Registration Rights Agreement duly executed by such Purchaser.

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ARTICLE III.
REPRESENTATIONS AND WARRANTIES

3.1           Representations and Warranties of the Company.  The Company hereby makes the following representations and warranties to the Purchasers:

(a)           Subsidiaries.  The Company has no direct or indirect subsidiaries other than those listed in the SEC Reports.  Except as disclosed in the SEC Reports, the Company owns, directly or indirectly, all of the capital stock of each Subsidiary free and clear of any lien, charge, security interest, encumbrance, right of first refusal or other restriction (collectively, “Liens”), and all the issued and outstanding shares of capital stock of each Subsidiary are validly issued and are fully paid, non-assessable and free of preemptive and similar rights.  If the Company has no subsidiaries, then references in the Transaction Documents to the Subsidiaries will be disregarded.

(b)           Organization and Qualification.  Each of the Company and the Subsidiaries is an entity duly incorporated or otherwise organized, validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization (as applicable), with the requisite power and authority to own and use its properties and assets and to carry on its business as currently conducted.  Neither the Company nor any Subsidiary is in violation of any of the provisions of its respective certificate or articles of incorporation, bylaws or other organizational or charter documents.  Each of the Company and the Subsidiaries is duly qualified to conduct business and is in good standing as a foreign corporation or other entity in each jurisdiction in which the nature of the business conducted or property owned by it makes such qualification necessary, except where the failure to be so qualified or in good standing, as the case may be, would not, individually or in the aggregate, have or reasonably be expected to result in: (i) a material adverse effect on the legality, validity or enforceability of any Transaction Document, (ii) a material adverse effect on the results of operations, assets, prospects, business or financial condition of the Company and the Subsidiaries, taken as a whole, or (iii) a material adverse impairment to the Company’s ability to perform fully on a timely basis its obligations under any Transaction Document (any of (i), (ii) or (iii), a “Material Adverse Effect”).

(c)           Authorization; Enforcement.  The Company has the requisite corporate power and corporate authority to enter into and to consummate the transactions contemplated by each of the Transaction Documents and otherwise to carry out its obligations thereunder.  The execution and delivery of each of the Transaction Documents by the Company and the consummation by it of the transactions contemplated thereby have been duly authorized by all necessary action on the part of the Company and no further action is required by the Company.  Each Transaction Document has been (or upon delivery will have been) duly executed by the Company and, when delivered in accordance with the terms hereof, will constitute the valid and binding obligation of the Company enforceable against the Company in accordance with its terms.  Neither the Company nor any Subsidiary is in violation of any of the provisions of its respective certificate or articles of incorporation, by–laws or other organizational or charter documents.

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(d)           No Conflicts.  Except as set forth in Schedule 3.1(d), the execution, delivery and performance of the Transaction Documents by the Company and the consummation by the Company of the transactions contemplated thereby do not and will not (i) conflict with or violate any provision of the Company’s or any Subsidiary’s certificate or articles of incorporation, bylaws or other organizational or charter documents, or (ii) conflict with, or constitute a default (or an event that with notice or lapse of time or both would become a default) under, or give to others any rights of termination, amendment, acceleration or cancellation (with or without notice, lapse of time or both) of, any agreement, credit facility, debt or other instrument (evidencing a Company or Subsidiary debt or otherwise) or other understanding to which the Company or any Subsidiary is a party or by which any property or asset of the Company or any Subsidiary is bound or affected, or (iii) result in a violation of any law, rule, regulation, order, judgment, injunction, decree or other restriction of any court or governmental authority to which the Company or a Subsidiary is subject (including federal and state securities laws and regulations), or by which any property or asset of the Company or a Subsidiary is bound or affected; except as do not, individually or in the aggregate, have or are reasonably be expected to result in a Material Adverse Effect.

(e)           Filings, Consents and Approvals.  The Company is not required to obtain any consent, waiver, authorization or order of, give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority or other Person in connection with the execution, delivery and performance by the Company of the Transaction Documents, other than the filing with the Commission of the Registration Statement, the application(s) to the Nasdaq for the listing of the Shares and Warrant Shares for trading thereon in the time and manner required thereby, and applicable Blue Sky filings.

(f)            Issuance of the Securities.  The Securities are duly authorized and, when issued and paid for in accordance with the Transaction Documents, will be duly and validly issued, fully paid and nonassessable, free and clear of all Liens.  The Company has reserved from its duly authorized capital stock the maximum number of shares of Common Stock issuable pursuant to this Agreement and the Warrants.

(g)           Capitalization.  The number of shares and type of all authorized, issued and outstanding capital stock of the Company is set forth in Schedule 3.1(g).  No securities of the Company are entitled to preemptive or similar rights, and no Person has any right of first refusal, preemptive right, right of participation, or any similar right to participate in the transactions contemplated by the Transaction Documents.  Except as a result of the purchase and sale of the Securities and except as disclosed in Schedule 3.1(g), there are no outstanding options, warrants, scrip rights to subscribe to, calls or commitments of any character whatsoever relating to, or securities, rights or obligations convertible into or exchangeable for, or giving any Person any right to subscribe for or acquire, any shares of Common Stock, or contracts, commitments, understandings or arrangements by which the Company or any Subsidiary is or may become bound to issue additional shares of Common Stock, or securities or rights convertible or exchangeable into shares of Common Stock.  The issue and sale of the Securities will not, immediately or with the passage of time, obligate the Company to issue shares of Common Stock

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or other securities to any Person (other than the Purchasers) and will not result in a right of any holder of Company securities to adjust the exercise, conversion, exchange or reset price under such securities.

(h)           SEC Reports; Financial Statements.  The Company has filed all reports required to be filed by it under the Securities Act and the Exchange Act, including pursuant to Section 13(a) or 15(d) thereof, for the two years preceding the date hereof (or such shorter period as the Company was required by law to file such material) (the foregoing materials being collectively referred to herein as the “SEC Reports” and, together with the Schedules to this Agreement, the “Disclosure Materials”) on a timely basis or has received a valid extension of such time of filing and has filed any such SEC Reports prior to the expiration of any such extension.  The Company has delivered to the Purchasers a copy of all SEC Reports filed within the 10 days preceding the date hereof.  As of their respective dates, the SEC Reports complied in all material respects with the requirements of the Securities Act and the Exchange Act and the rules and regulations of the Commission promulgated thereunder, and none of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to state a material fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which they were made, not misleading.  The financial statements of the Company included in the SEC Reports comply in all material respects with applicable accounting requirements and the rules and regulations of the Commission with respect thereto as in effect at the time of filing.  Such financial statements have been prepared in accordance with generally accepted accounting principles applied on a consistent basis during the periods involved (“GAAP”), except as may be otherwise specified in such financial statements or the notes thereto, and fairly present in all material respects the financial position of the Company and its consolidated subsidiaries as of and for the dates thereof and the results of operations and cash flows for the periods then ended, subject, in the case of unaudited statements, to normal, immaterial, year-end audit adjustments.

(i)            Material Changes.  Since the date of the latest audited financial statements included within the SEC Reports, except as specifically disclosed in the SEC Reports, (i) there has been no event, occurrence or development that has had or that could result in a Material Adverse Effect, (ii) the Company has not incurred any liabilities (contingent or otherwise) other than (A) trade payables and accrued expenses incurred in the ordinary course of business consistent with past practice and (B) liabilities not required to be reflected in the Company’s financial statements pursuant to GAAP or required to be disclosed in filings made with the Commission, (iii) the Company has not altered its method of accounting or the identity of its auditors, (iv) the Company has not declared or made any dividend or distribution of cash or other property to its stockholders or purchased, redeemed or made any agreements to purchase or redeem any shares of its capital stock, and (v) the Company has not issued any equity securities to any officer, director or Affiliate, except pursuant to existing Company stock option plans. The Company does not have pending before the Commission any request for confidential treatment of information.

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(j)            Litigation.  There is no action, suit, inquiry, notice of violation, proceeding or investigation pending or, to the knowledge of the Company, threatened against or affecting the Company, any Subsidiary or any of their respective properties before or by any court, arbitrator, governmental or administrative agency or regulatory authority (federal, state, county, local or foreign) (collectively, an “Action”) which (i) adversely affects or challenges the legality, validity or enforceability of any of the Transaction Documents or the Securities or (ii) would, if there were an unfavorable decision, individually or in the aggregate, have or result in a Material Adverse Effect.  Neither the Company nor any Subsidiary, nor any director or officer thereof, is or has been the subject of any Action involving a claim of violation of or liability under federal or state securities laws or a claim of breach of fiduciary duty.  There has not been, and to the knowledge of the Company, there is not pending or contemplated, any investigation by the Commission involving the Company or any current or former director or officer of the Company.  The Commission has not issued any stop order or other order suspending the effectiveness of any registration statement filed by the Company or any Subsidiary under the Exchange Act or the Securities Act.

(k)           Labor Relations.  No material labor dispute exists or, to the knowledge of the Company, is imminent with respect to any of the employees of the Company.

(l)            Compliance.  Neither the Company nor any Subsidiary: (i) is in default under or in violation of (and no event has occurred that has not been waived that, with notice or lapse of time or both, would result in a default by the Company or any Subsidiary under), nor has the Company or any Subsidiary received notice of a claim that it is in default under or that it is in violation of, any indenture, loan or credit agreement or any other agreement or instrument to which it is a party or by which it or any of its properties is bound (whether or not such default or violation has been waived), (ii) is in violation of any order of any court, arbitrator or governmental body, or (iii) is or has been in violation of any statute, rule or regulation of any governmental authority, including without limitation all foreign, federal, state and local laws relating to taxes, environmental protection, occupational health and safety, product quality and safety and employment and labor matters, except in each case as does not, individually or in the aggregate, have or reasonably be expected to result in a Material Adverse Effect.

(m)          Regulatory Permits.  The Company and the Subsidiaries possess all certificates, authorizations and permits issued by the appropriate federal, state, local or foreign regulatory authorities necessary to conduct their respective businesses as described in the SEC Reports, except where the failure to possess such permits would not, individually or in the aggregate, have or result in a Material Adverse Effect (“Material Permits”), and neither the Company nor any Subsidiary has received any notice of proceedings relating to the revocation or modification of any Material Permit.

(n)           Title to Assets.  Except as otherwise set forth in the SEC Reports, the Company and the Subsidiaries have good and marketable title in fee simple to all real property owned by them that is material to the business of the Company and the Subsidiaries and good and marketable title in all personal property owned by them that is material to the business of the

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Company and the Subsidiaries, in each case free and clear of all Liens, except for Liens created by the Titan Credit Facility (as defined in Section 4.11) and as do not materially affect the value of such property and do not materially interfere with the use made and proposed to be made of such property by the Company and the Subsidiaries. Any real property and facilities held under lease by the Company and the Subsidiaries are held by them under valid, subsisting and enforceable leases of which the Company and the Subsidiaries are in compliance.

(o)           Patents and Trademarks.  To the knowledge of the Company, the Company and the Subsidiaries have, or have rights to use, all patents, patent applications, trademarks, trademark applications, service marks, trade names, copyrights, licenses and other similar rights that are necessary or material for use in connection with their respective businesses as described in the SEC Reports and which the failure to so have could have a Material Adverse Effect (collectively, the “Intellectual Property Rights”).  Neither the Company nor any Subsidiary has received a written notice that the Intellectual Property Rights used by the Company or any Subsidiary violates or infringes upon the rights of any Person. To the knowledge of the Company, all such Intellectual Property Rights are enforceable and there is no existing infringement by another Person of any of the Intellectual Property Rights.

(p)           Transactions With Affiliates and Employees.  Except as set forth in SEC Reports, none of the officers or directors of the Company and, to the knowledge of the Company, none of the employees of the Company is presently a party to any transaction with the Company or any Subsidiary (other than for services as employees, officers and directors), including any contract, agreement or other arrangement providing for the furnishing of services to or by, providing for rental of real or personal property to or from, or otherwise requiring payments to or from any officer, director or such employee or, to the knowledge of the Company, any entity in which any officer, director, or any such employee has a substantial interest or is an officer, director, trustee or partner.

(q)           Certain Fees.  Except as described in Schedule 3.1(q), no brokerage or finder’s fees or commissions are or will be payable by the Company to any broker, financial advisor or consultant, finder, placement agent, investment banker, bank or other Person with respect to the transactions contemplated by this Agreement.  The Purchasers shall have no obligation with respect to any fees or with respect to any claims made by or on behalf of other Persons for fees of a type contemplated in this Section that may be due in connection with the transactions contemplated by this Agreement.  The Company shall indemnify and hold harmless the Purchasers, their employees, officers, directors, agents, and partners, and their respective Affiliates, from and against all claims, losses, damages, costs (including the costs of preparation and attorney’s fees) and expenses suffered in respect of any such claimed or existing fees, as such fees and expenses are incurred.

(r)            Private Placement. Assuming the accuracy of the Purchasers representations and warranties set forth in Section 3.2(b)-(e), no registration under the Securities Act is required for the offer and sale of the Securities by the Company to the Purchasers as contemplated hereby.  The issuance and sale of the Securities hereunder does not contravene the

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rules and regulations of the Nasdaq and no shareholder approval is required for the Company to fulfill its obligations under the Transaction Documents.

(s)           Form S-3 Eligibility. The Company is eligible to register the resale of its  Common Stock for resale by the Purchasers under Form S-3 promulgated under the Securities Act.

(t)            Listing and Maintenance Requirements.  The Company has not, in the two years preceding the date hereof, received notice (written or oral) from any Eligible Market on which the Common Stock is or has been listed or quoted to the effect that the Company is not in compliance with the listing or maintenance requirements of such Eligible Market. The Company is, and has no reason to believe that it will not in the foreseeable future continue to be, in compliance with all such listing and maintenance requirements.

(u)           Investment Company.  The Company is not, and is not an Affiliate of, an “investment company” within the meaning of the Investment Company Act of 1940, as amended.

(v)           Registration Rights.  Except for the Company’s registration obligations pursuant to the Registration Rights Agreement, the Company has not granted or agreed to grant to any Person any rights (including “piggy–back” registration rights) to have any securities of the Company registered with the Commission or any other governmental authority that have not been satisfied in full.

(w)          Application of Takeover Protections.  The Company has taken all necessary action, if any, in order to render inapplicable any control share acquisition, business combination, poison pill (including any distribution under a rights agreement) or other similar anti–takeover provision under the Company’s Certificate of Incorporation (or similar charter documents) or the laws of its state of incorporation that is or could become applicable to the Purchasers as a result of the Purchasers and the Company fulfilling their obligations or exercising their rights under the Transaction Documents, including without limitation the Company’s issuance of the Securities and the Purchasers’ ownership of the Securities.

(x)            Disclosure.  The Company confirms that neither it nor any other Person acting on its behalf has provided any of the Purchasers or their agents or counsel with any information that constitutes or might constitute material, non-public information.  The Company understands and confirms that the Purchasers will rely on the foregoing representations in effecting transactions in securities of the Company.  All disclosure provided to the Purchasers regarding the Company, its business and the transactions contemplated hereby, including the Schedules to this Agreement, furnished by or on behalf of the Company are true and correct and do not contain any untrue statement of a material fact or omit to state any material fact necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading.

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3.2           Representations and Warranties of the Purchasers.  Each Purchaser hereby, for itself and for no other Purchaser, represents and warrants to the Company as follows:

(a)           Organization; Authority.  Such Purchaser is an entity duly organized, validly existing and in good standing under the laws of the jurisdiction of its organization with the requisite corporate or partnership power and authority to enter into and to consummate the transactions contemplated by the Transaction Documents and otherwise to carry out its obligations thereunder. The execution, delivery and performance by such Purchaser of the transactions contemplated by this Agreement has been duly authorized by all necessary corporate action on the part of such Purchaser.  Each of this Agreement and the Registration Rights Agreement has been duly executed by such Purchaser, and when delivered by such Purchaser in accordance with terms hereof, will constitute the valid and legally binding obligation of such Purchaser, enforceable against it in accordance with its terms.

(b)           Investment Intent.  Such Purchaser is acquiring the Securities as principal for its own account for investment purposes only and not with a view to or for distributing or reselling such Securities or any part thereof, without prejudice, however, to such Purchaser’s right at all times to sell or otherwise dispose of all or any part of such Securities in compliance with applicable federal and state securities laws.  Nothing contained herein shall be deemed a representation or warranty by such Purchaser to hold Securities for any period of time.  Such Purchaser is acquiring the Securities hereunder in the ordinary course of its business. Such Purchaser does not have any agreement or understanding, directly or indirectly, with any Person to distribute any of the Securities.

(c)           Purchaser Status.  At the time such Purchaser was offered the Securities, it was, and at the date hereof it is, and on each date on which it exercises the Warrants, it will be an “accredited investor” as defined in Rule 501(a) under the Securities Act.  Such Purchaser is not a registered broker-dealer under Section 15 of the Exchange Act.

(d)           Experience of such Purchaser.  Such Purchaser, either alone or together with its representatives, has such knowledge, sophistication and experience in business and financial matters so as to be capable of evaluating the merits and risks of the prospective investment in the Securities, and has so evaluated the merits and risks of such investment.  Such Purchaser is able to bear the economic risk of an investment in the Securities and, at the present time, is able to afford a complete loss of such investment.

(e)           General Solicitation.  To the knowledge of such Purchaser, such Purchaser is not purchasing the Securities as a result of any advertisement, article, notice or other communication regarding the Securities published in any newspaper, magazine or similar media or broadcast over television or radio or presented at any seminar or any other general solicitation or general advertisement.

(f)            Access to Information.  Such Purchaser acknowledges that it has reviewed the Disclosure Materials and has been afforded (i) the opportunity to ask such questions as it has

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deemed necessary of, and to receive answers from, representatives of the Company concerning the terms and conditions of the offering of the Securities and the merits and risks of investing in the Securities; (ii) access to information about the Company and the Subsidiaries and their respective financial condition, results of operations, business, properties, management and prospects sufficient to enable it to evaluate its investment; and (iii) the opportunity to obtain such additional information that the Company possesses or can acquire without unreasonable effort or expense that is necessary to make an informed investment decision with respect to the investment.  Neither such inquiries nor any other investigation conducted by or on behalf of such Purchaser or its representatives or counsel shall modify, amend or affect such Purchaser’s right to rely on the truth, accuracy and completeness of the Disclosure Materials and the Company’s representations and warranties contained in the Transaction Documents.

(g)           No Violations.  During the past ten (10) years, no federal or state securities regulatory authority nor any self-regulatory organization has, to the knowledge of such Purchaser: (i) found that such Purchaser or any of its Affiliates has committed a violation of investment-related rules, regulations or statutes, (other than a violation designated as a “minor rule violation” under a plan approved by the Commission), or (ii) entered an order against such Purchaser or any of its Affiliates as a result of, or in connection with, an investment-related activity.

The Company acknowledges and agrees that each Purchaser does not make or has not made any representations or warranties with respect to the transactions contemplated hereby other than those specifically set forth in this Section 3.2.

ARTICLE IV.
OTHER AGREEMENTS OF THE PARTIES

4.1           Transfer Restrictions.  (a)  Securities may only be disposed of in compliance with state and federal securities laws.  In connection with any transfer of Securities other than pursuant to an effective registration statement, to the Company , to an Affiliate of a Purchaser or in connection with a pledge as contemplated in Section 4.1(b), the Company may require the transferor thereof to provide to the Company an opinion of counsel selected by the transferor, the form and substance of which opinion shall be reasonably satisfactory to the Company, to the effect that such transfer does not require registration of such transferred Securities under the Securities Act.  As a condition of transfer, any such transferee shall agree in writing to be bound by the terms of this Agreement and shall have the rights of a Purchaser under this Agreement and the Registration Rights Agreement.

(b)           The Purchasers agree to the imprinting, so long as is required by this Section 4.1(b), of the following legend on any the Securities:

[NEITHER] THESE SECURITIES [NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE EXERCISABLE] HAVE [NOT] BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION

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OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.  THESE SECURITIES [AND THE SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES] MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES.

The Company acknowledges and agrees that a Purchaser may from time to time pledge pursuant to a bona fide margin agreement or grant a security interest in some or all of the Securities and, if required under the terms of such arrangement, such Purchaser may transfer pledged or secured Securities to the pledgees or secured parties.  Such a pledge or transfer would not be subject to approval of the Company and no legal opinion of the pledgee, secured party or pledgor shall be required in connection therewith.  Further, no notice shall be required of such pledge.  At the appropriate Purchaser’s expense, the Company will execute and deliver such reasonable documentation as a pledgee or secured party of Securities may reasonably request in connection with a pledge or transfer of the Securities, including the preparation and filing of any required prospectus supplement under Rule 424(b)(3) of the Securities Act or other applicable provision of the Securities Act to appropriately amend the list of Selling Stockholders thereunder.

(c)           Certificates evidencing Securities shall not contain any legend (including the legend set forth in Section 4.1(b)): (i) while a registration statement (including the Registration Statement) covering the resale of such security is effective under the Securities Act, or (ii) following any sale of such Securities pursuant to Rule 144, or (iii) if such Securities are eligible for sale under Rule 144(k), or (iv) if such legend is not required under applicable requirements of the Securities Act (including judicial interpretations and pronouncements issued by the Staff of the Commission).  The Company shall cause its counsel to issue the legal opinion included in the Transfer Agent Instructions to the Company’s transfer agent on the Effective Date.  If all or any portion of a Warrant is exercised at a time when there is a effective registration statement to cover the resale of the Warrant Shares, such Warrant Shares shall be issued free of all legends.  The Company agrees that following the Effective Date or at such time as such legend is no longer required under this Section 4.1(c), it will, no later than three Trading Days following the delivery by a Purchaser to the Company or the Company’s transfer agent of a certificate representing Securities issued with a restrictive legend, deliver or cause to be delivered to such Purchaser a certificate representing such Securities that is free from all

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restrictive and other legends.  The Company may not make any notation on its records or give instructions to any transfer agent of the Company that enlarge the restrictions on transfer set forth in this Section.

4.2           Furnishing of Information.  As long as any Purchaser owns Securities, the Company covenants to timely file (or obtain extensions in respect thereof and file within the applicable grace period) all reports required to be filed by the Company after the date hereof pursuant to the Exchange Act.  Upon the request of any such Person, the Company shall deliver to such Person a written certification of a duly authorized officer as to whether it has complied with the preceding sentence. As long as any Purchaser owns Securities, if the Company is not required to file reports pursuant to such laws, it will prepare and furnish to the Purchasers and make publicly available in accordance with Rule 144(c) such information as is required for the Purchasers to sell the Securities under Rule 144. The Company further covenants that it will take such further action as any holder of Securities may reasonably request, all to the extent required from time to time to enable such Person to sell such Securities without registration under the Securities Act within the limitation of the exemptions provided by Rule 144.

4.3           Integration.  The Company shall not, and shall use its best efforts to ensure that no Affiliate of the Company shall, sell, offer for sale or solicit offers to buy or otherwise negotiate in respect of any security (as defined in Section 2 of the Securities Act) that would be integrated with the offer or sale of the Securities in a manner that would require the registration under the Securities Act of the sale of the Securities to the Purchasers, or that would be integrated with the offer or sale of the Securities for purposes of the rules and regulations of the Nasdaq.

4.4           No Subsequent Issuances or Registrations.  Prior to the 90^th day following the Effective Date (such 90^th day, the “Record Date”), the Company will not, directly or indirectly: (i) except pursuant to a Strategic Transaction, offer, sell, grant any option to purchase, or otherwise dispose of (or announce any offer, sale, grant or any option to purchase or other disposition of) shares of Common Stock or Common Stock Equivalents, at a price per share less than $7.00 (the “Record Price,” subject to equitable adjustment for stock splits, recombinations and similar transactions) (if the holder of the Common Stock or Common Stock Equivalent so issued shall at any time, whether by operation of purchase price adjustments, reset provisions, floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights issued in connection with such issuance, be entitled to receive shares of Common Stock at a price less than the Record Price, such issuance shall be deemed to have occurred for less than the Record Price) or (ii) file a registration statement with the Commission (other than on Form S-8 or pursuant to the Registration Rights Agreement) with respect to any securities of the Company.  The foregoing issuance and registration restrictions shall not apply to: (i) the issuance of securities upon the exercise or conversion of the Company’s options, warrants or other convertible securities outstanding as of the date hereof, (ii) the grant of options or warrants, or the issuance of additional securities, under any duly authorized Company stock option, restricted stock plan or stock purchase plan currently in existence, (iii) Common Stock Equivalents issued in connection with the Company’s acquisition of a business or assets, (iv) Common Stock Equivalents issued in connection with capital equipment leasing transactions, (v) Common Stock

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Equivalents issued to bona fide consultants to the Company, (vi) Common Stock Equivalents issued in one or more instances for any purpose so long as such issuance or the aggregate of such issuances does not result in issuance by the Company of more than an aggregate of 100,000 shares of Common Stock on a fully diluted basis, or (vii) the issuance of Common Stock Equivalents pursuant to a Strategic Transaction.

4.5           Right of Participation.  During the period from the date hereof until the first year anniversary of the Closing Date, in the event that the Company, directly or indirectly and other than pursuant to a Strategic Transaction, offers, sells, grants any option to purchase, or otherwise disposes of (or announces any offer, sale, grant or any option to purchase or other disposition of) shares of Common Stock or Common Stock Equivalents (any such offer, sale, grant, disposition or announcement being referred to as a “Subsequent Placement”), then Company shall deliver to the Purchasers a written notice (a “Subsequent Placement Notice”) of its intention to effect such Subsequent Placement.  Each Purchaser or Affiliate thereof shall have the right to participate on pro-rata basis (with respect to other participating Purchasers and the number of Shares purchased by them on the Closing Date) in up to 50% of each Subsequent Placement on the same terms and conditions as the other investor(s) in the Subsequent Placement, up to a maximum of $15,000,000 for all participating Purchasers in each Subsequent Placement.  The right of the Purchasers to participate in a Subsequent Placement pursuant to this Section shall not apply to: (i) the issuance of securities upon the exercise or conversion of the Company’s options, warrants or other convertible securities outstanding as of the date hereof, (ii) the grant of options or warrants, or the issuance of additional securities, under any duly authorized Company stock option, restricted stock plan or stock purchase plan currently in existence, (iii) Common Stock Equivalents issued in connection with the Company’s acquisition of a business or assets, (iv) Common Stock Equivalents issued in connection with capital equipment leasing transactions, (v) Common Stock Equivalents issued to bona fide consultants to the Company, (vi) Common Stock Equivalents issued in one or more instances for any purpose so long as such issuance or the aggregate of such issuances does not result in issuance by the Company of more than an aggregate of 100,000 shares of Common Stock on a fully diluted basis, (vii) the issuance of Common Stock Equivalents pursuant to a Strategic Transaction, or (viii) a bona fide underwritten public offering of securities of the Company pursuant to which the Company receives net proceeds of at least $25 million, other than an equity line of credit or similar financing transaction.

4.6           Securities Laws Disclosure; Publicity.  The Company shall (i) on the Closing Date, issue a press release reasonably acceptable to the Purchasers disclosing the transactions contemplated hereby and (ii) make such other filings and notices in the manner and time required by the Commission.  The Company and the Purchasers shall consult with each other in issuing any press releases with respect to the transactions contemplated hereby, and neither party shall issue any such press release or otherwise make any such public statement without the prior consent of the other, which consent shall not unreasonably be withheld, except if such disclosure is required by law, in which case the disclosing party shall promptly provide the other party with prior notice of such public statement or communication.  Notwithstanding the foregoing, the Company shall not publicly disclose the name of any Purchaser, or include the name of any

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Purchaser in any filing with the Commission or any regulatory agency or the Nasdaq, without the prior written consent of such Purchaser, except to the extent such disclosure (but not any disclosure as to the controlling Persons thereof) is required by law or Nasdaq regulations, in which case the Company shall provide the Purchasers with prior notice of such disclosure.

4.7           Reimbursement.  If any Purchaser becomes involved in any capacity in any Proceeding by or against any Person who is a stockholder of the Company, solely as a result of such Purchaser’s acquisition of the Securities under this Agreement and without causation by any other activity, obligation, condition or liability pertaining to such Purchaser and not to the transactions contemplated by this Agreement, the Company will reimburse such Purchaser for its reasonable legal and other expenses (including the cost of any investigation preparation and travel in connection therewith) incurred in connection therewith, as such expenses are incurred.  The reimbursement obligations of the Company under this paragraph shall be in addition to any liability which the Company may otherwise have, shall extend upon the same terms and conditions to any Affiliates of the Purchasers who are actually named in such action, proceeding or investigation, and partners, directors, agents, employees and controlling persons (if any), as the case may be, of the Purchasers and any such Affiliate, and shall be binding upon and inure to the benefit of any successors, assigns, heirs and personal representatives of the Company, the Purchasers and any such Affiliate and any such Person.  The Company also agrees that neither the Purchasers nor any such Affiliates, partners, directors, agents, employees or controlling persons shall have any liability to the Company or any Person asserting claims on behalf of or in right of the Company solely as a result of acquiring the Securities under this Agreement.

4.8           Indemnification of Purchasers.  The Company will indemnify and hold the Purchasers and their directors, officers, shareholders, partners, employees and agents (each, a “Purchaser Party”) harmless from any and all losses, liabilities, obligations, claims, contingencies, damages, costs and expenses, including all judgments, amounts paid in settlements, court costs and reasonable attorneys’ fees and costs of investigation (collectively, “Losses”) that any such Purchaser Party may suffer or incur as a result of or relating to (a) any misrepresentation, breach or inaccuracy, or any allegation by a third party that, if true, would constitute a breach or inaccuracy, of any of the representations, warranties, covenants or agreements made by the Company in the Transaction Documents; or (b) any cause of action, suit or claim brought or made against such Purchaser Party and arising solely out of or solely resulting from the execution, delivery, performance or enforcement of this Agreement or any of the other Transaction Documents and without causation by any other activity, obligation, condition or liability pertaining to such Purchaser and not to the transactions contemplated by this Agreement. The Company will reimburse such Purchaser for its reasonable legal and other expenses (including the cost of any investigation, preparation and travel in connection therewith) incurred in connection therewith, as such expenses are incurred.  Notwithstanding the foregoing, such indemnification shall not cover any liability of an indemnified party arising solely out of such indemnified party’s gross negligence, willful misconduct or fraudulent actions.

4.9           Shareholders Rights Plan.  No claim will be made or enforced by the Company or any other Person that any Purchaser is an “Acquiring Person” under any shareholders rights plan

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or similar plan or arrangement in effect or hereafter adopted by the Company, or that any Purchaser could be deemed to trigger the provisions of any such plan or arrangement, by virtue of receiving Securities under the Transaction Documents or under any other agreement between the Company and the Purchasers.

4.10         Non-Public Information.  The Company covenants and agrees that neither it nor any other Person acting on its behalf will provide any Purchaser or its agents or counsel with any information that the Company believes constitutes material non-public information, unless prior thereto such Purchaser shall have executed a written agreement regarding the confidentiality and use of such information.  The Company understands and confirms that each Purchaser shall be relying on the foregoing representations in effecting transactions in securities of the Company.

4.11         Use of Proceeds.  The Company shall use the net proceeds from the sale of the Securities hereunder for working capital purposes or other proper corporate purposes and not for the satisfaction of any portion of the Company’s debt (other than payment of trade receivables and accrued expenses in the ordinary course of the Company’s business and prior practices), to redeem any Company equity or equity-equivalent securities or to settle any outstanding litigation.  Notwithstanding the foregoing, the Purchasers acknowledge that any use of proceeds described herein in excess of $25,000,000 shall be subject at all times to the terms of that certain Senior Secured Credit Agreement, dated as of August 2, 2002, between The Titan Corporation, as the Lender, and the Company, as the Borrower (the “Titan Credit Facility”).

4.12         Certain Trading Limitations. Each Purchaser agrees that prior to the earlier to occur of (x) the 90^th day following the Closing Date and (y) the Effective Date, it will not enter into any Short Sales.  For purposes of this Section 4.11, a “Short Sale” by a Purchaser means a sale of Common Stock that is marked as a short sale and occurs at a time when such Purchaser has no equivalent offsetting long position in the Common Stock.  For purposes of determining whether there is an equivalent offsetting long position in the Common Stock held by a Purchaser on any date of computation, all Warrant Shares issuable upon exercise in full of the Warrants issued to such Purchaser shall be deemed to be held long by such Purchaser.

ARTICLE V.
MISCELLANEOUS

5.1           Fees and Expenses.  At  the Closing, the Company shall, in addition to any other fees due to Roth Capital Partners, LLC,  reimburse Roth Capital Partners, LLC for $20,000 of its legal fees and due diligence expenses in connection with the preparation and negotiation of the Transaction Documents.  Except as specified in the immediately preceding sentence and as contemplated in the Registration Rights Agreement, each party shall pay the fees and expenses of its advisers, counsel, accountants and other experts, if any, and all other expenses incurred by such party incident to the negotiation, preparation, execution, delivery and performance of this Agreement.  The Company shall pay all stamp and other taxes and duties levied in connection with the sale of the Shares.

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5.2           Entire Agreement.  The Transaction Documents, together with the Exhibits and Schedules thereto, contain the entire understanding of the parties with respect to the subject matter hereof and supersede all prior agreements and understandings, oral or written, with respect to such matters, which the parties acknowledge have been merged into such documents, exhibits and schedules.

5.3           Notices.  Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of (a) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section prior to 6:30 p.m. (New York City time) on a Trading Day, (b) the next Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number specified in this Section on a day that is not a Trading Day or later than 6:30 p.m. (New York City time) on any Trading Day, (c) the Trading Day following the date of mailing, if sent by U.S. nationally recognized overnight courier service, or (d) upon actual receipt by the party to whom such notice is required to be given.  The address for such notices and communications shall be as follows:

If to the Company:                                                                                       SureBeam Corporation
9276 Scranton Road, Suite 600
San Diego, CA 92121
Attn: Chief Financial Officer
Fax No.: (858) 795-6231

With a copy to:                                                                                                       Luce, Forward, Hamilton & Scripps LLP
11988 El Camino Real, Suite 200
San Diego, CA 92130
Attn: Ed Arledge                   
Fax No.:  (858) 720-6306

If to a Purchaser:                                                                                                To the address set forth under such Purchaser’s name
on the signature pages hereof.

With a copy to:                                                                                                       Bryan Cave LLP.

                                                                                                                                                     
60;                                    1290 Avenue of the Americas
New York, NY 10104
Attn: Eric L. Cohen, Esq.
Fax No.: 212 ###-###-#### and ###-###-####

                or such other address as may be designated in writing hereafter, in the same manner, by such Person.

5.4           Amendments; Waivers.  No provision of this Agreement may be waived or amended except in a written instrument signed, in the case of an amendment, by the Company and each of the Purchasers or, in the case of a waiver, by the party against whom enforcement of any such waiver is sought.  No waiver of any default with respect to any provision, condition or

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requirement of this Agreement shall be deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of either party to exercise any right hereunder in any manner impair the exercise of any such right.

5.5           Construction.  The headings herein are for convenience only, do not constitute a part of this Agreement and shall not be deemed to limit or affect any of the provisions hereof.  The language used in this Agreement will be deemed to be the language chosen by the parties to express their mutual intent, and no rules of strict construction will be applied against any party.  This Agreement shall be construed as if drafted jointly by the parties, and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the authorship of any provisions of this Agreement or any of the Transaction Documents.

5.6           Successors and Assigns.  This Agreement shall be binding upon and inure to the benefit of the parties and their successors and permitted assigns.  The Company may not assign this Agreement or any rights or obligations hereunder without the prior written consent of the Purchasers. Any Purchaser may assign any or all of its rights under this Agreement to any Person to whom such Purchaser assigns or transfers any Securities, provided such transferee agrees in writing to be bound, with respect to the transferred Securities, by the provisions hereof that apply to the “Purchasers.”

5.7           No Third-Party Beneficiaries.  This Agreement is intended for the benefit of the parties hereto and their respective successors and permitted assigns and is not for the benefit of, nor may any provision hereof be enforced by, any other Person, except as otherwise set forth in Section 4.6 and 4.7.

5.8           Governing Law.  All questions concerning the construction, validity, enforcement and interpretation of the Transaction Documents  shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard to the principles of conflicts of law thereof.  Each party agrees that all legal proceedings concerning the interpretations, enforcement and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a party hereto or its respective affiliates, directors, officers, shareholders, employees or agents) shall be commenced exclusively in the state and federal courts sitting in the City of New York, Borough of Manhattan.  Each party hereto hereby irrevocably submits to the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including with respect to the enforcement of the any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert in any suit, action or proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such suit, action or proceeding is improper.  Each party hereto (including its affiliates, agents, officers, directors and employees) hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.  If either party shall commence an action or proceeding to

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enforce any provisions of a Transaction Document, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees and other costs and expenses incurred with the investigation, preparation and prosecution of such action or proceeding.

5.9           Survival.  The representations, warranties, agreements and covenants contained herein shall survive the Closing and the delivery and exercise of the Warrants, as applicable.

5.10         Execution.  This Agreement may be executed in two or more counterparts, all of which when taken together shall be considered one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to the other party, it being understood that both parties need not sign the same counterpart.  In the event that any signature is delivered by facsimile transmission, such signature shall create a valid and binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if such facsimile signature page were an original thereof.

5.11         Severability.  If any provision of this Agreement is held to be invalid or unenforceable in any respect, the validity and enforceability of the remaining terms and provisions of this Agreement shall not in any way be affected or impaired thereby and the parties will attempt to agree upon a valid and enforceable provision that is a reasonable substitute therefor, and upon so agreeing, shall incorporate such substitute provision in this Agreement.

5.12         Rescission and Withdrawal Right.  Notwithstanding anything to the contrary contained in (and without limiting any similar provisions of) the Transaction Documents, whenever any Purchaser exercises a right, election, demand or option under a Transaction Document and the Company does not timely perform its related obligations within the periods therein provided, then such Purchaser may rescind or withdraw, in its sole discretion from time to time upon written notice to the Company, any relevant notice, demand or election in whole or in part without prejudice to its future actions and rights.

5.13         Replacement of Securities.  If any certificate or instrument evidencing any Securities is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation thereof, or in lieu of and substitution therefor, a new certificate or instrument, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction and customary and reasonable indemnity (which may include a reasonable surety bond), if requested.  The applicants for a new certificate or instrument under such circumstances shall also pay any reasonable third-party costs associated with the issuance of such replacement Securities.

5.14         Remedies.  In addition to being entitled to exercise all rights provided herein or granted by law, including recovery of damages, each of the Purchasers and the Company will be entitled to specific performance under the Transaction Documents.  The parties agree that monetary damages may not be adequate compensation for any loss incurred by reason of any breach of obligations described in the foregoing sentence and hereby agrees to waive in any

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action for specific performance of any such obligation the defense that a remedy at law would be adequate.

5.15         Independent Nature of Purchasers’ Obligations and Rights.  The obligations of each Purchaser under any Transaction Document are several and not joint with the obligations of any other Purchaser, and no Purchaser shall be responsible in any way for the performance of the obligations of any other Purchaser under any Transaction Document.  Nothing contained herein or in any Transaction Document, and no action taken by any Purchaser pursuant thereto, shall be deemed to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption that the Purchasers are in any way acting in concert or as a group with respect to such obligations or the transactions contemplated by the Transaction Document.  Each Purchaser shall be entitled to independently protect and enforce its rights, including without limitation the rights arising out of this Agreement or out of the other Transaction Documents, and it shall not be necessary for any other Purchaser to be joined as an additional party in any proceeding for such purpose.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
SIGNATURE PAGE FOR PURCHASER FOLLOWS]

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IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized signatories as of the date first indicated above.

SUREBEAM CORPORATION

______________________________________
Name:      
Title:        

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
SIGNATURE PAGES FOR PURCHASERS FOLLOW]

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IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first written above.

PURCHASER:

By:_____________________________________

Name:

Title:

                                                                                                Subscription Amount:  $[ ]

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