EXHIBIT 10.66

                                   ASSIGNMENT

         WHEREAS, I, Bogdan Castle Maglich, a United States citizen, residing at
[CONFIDENTIAL   TREATMENT  REQUESTED]  have  invented  certain  new  and  useful
improvements  in a "METHOD AND APPARATUS FOR  DETECTING,  LOCATING AND ANALYZING
CHEMICAL  COMPOUNDS  USING  SUBATOMIC  PARTICLE  ACTIVATION"  for  which  I have
submitted Patent Application in the United States, 09/788,736.

         AND WHEREAS, HiEnergy Microdevices,  Inc. (hereinafter  "ASSIGNEE"),  a
Delaware Corporation,  with its principal place of business at 10 Mauchly Drive,
Irvine,  California,  92618  desires to acquire  the entire  right,  title,  and
interest in and to the said improvements and the said Letters Patent:

         NOW,  THEREFORE,  in consideration of Shareholder Equity and the sum of
One  Dollar   ($1.00)  to  me  in  hand  paid,   and  other  good  and  valuable
consideration, the receipt of which is hereby acknowledge, I, the said inventor,
do hereby acknowledge that I have sold, assigned,  transferred and set over, and
by these presents do hereby sell,  assign,  transfer and set over, unto the said
ASSIGNEE, its successors, legal representatives,  and assigns, the entire right,
title,   and  interest   throughout  the  world  in,  to,  and  under  the  said
improvements, and the said application and all provisional applications relating
thereto, and all divisions, renewals, and continuations thereof, and all Letters
Patent of the United  States  which may be granted  thereon and all reissues and
extensions thereof,  and all rights of priority under International  Conventions
and  applications  for  Letters  Patent  which may  hereafter  be filed for said
improvements in any country or countries  foreign to the United States,  and all
Letters  Patent  which may be granted  for said  improvements  in any country or
countries foreign to the United States and all extensions, renewals and reissues
therefore; and I hereby authorize and request the Commissioner of Patents of the
United  States,  and any  Official  of any country or  countries  foreign to the
United States,  whose duty it is to issue patents on  applications as aforesaid,
to issue all  Letters  Patent  for said  improvements  and all  Letters  Patents
resulting  from the  Patent  Application  to  ASSIGNEE,  its  successors,  legal
representatives, and assigns, in accordance with the terms of this instrument.

         AND I HEREBY  covenant and agree that it will  communicate to ASSIGNEE,
its  successors,  legal  representatives  and  assigns  any  facts  known  to me
respecting  said  improvements,  and testify in any legal  proceeding,  sign all
lawful papers, execute all divisional, continuing and reissue applications, make
all  rightful  oaths  and  generally  do  everything  possible  to aid the  said
ASSIGNEE,  its  successors,  legal  representatives  and assigns,  to obtain and
enforce proper patent protection for said improvements in all countries.

         IN TESTIMONY  WHEREOF, I hereunto set my hand and seal this 26th day of
March, 2002.

                                        /s/ Bogdan C. Maglich
                                        --------------------------------------
                                        Bogdan C. Maglich, Ph.D.



STATE OF CA             |
                        |       ss.
COUNTY OF ORANGE        |

         On March  26,  2002,  before  me,  BOGDAN  CASTLE  MAGLICH,  personally
appeared  *personally  known to me (or proved to me on the basis of satisfactory
evidence) to be the  person(s)  whose  name(s)  is/are  subscribed to the within
instrument,  and  acknowledged  to me *  that  he  executed  the  same  in * his
authorized capacity(ies),  and by his signature on the instrument the person(s),
or the entity upon behalf of which the person(s) acted, executed the instrument.

         WITNESS my hand and official seal.

[SEAL]                          /s/ James L. McDaniel
                                --------------------------------------
                                Notary Signature


<PAGE>

                                 EXHIBIT 10.66.1

                                   ASSIGNMENT

         WHEREAS, HiEnergy Microdevices, Inc., a Delaware corporation previously
having  offices  at 10  Mauchly  Drive,  Irvine  California  92618  (hereinafter
"ASSIGNOR"),  represents  and  warrants  that it is the sole owner of the entire
right,  title,  and  interest to certain new and useful  improvements  for which
ASSIGNOR has filed United States Patent Application No. 09/788,736 in the United
States on  February  20, 2001  entitled  "METHOD AND  APPARATUS  FOR  DETECTING,
LOCATING AND ANALYZING CHEMICAL  COMPOUNDS USING SUBATOMIC PARTICLE  ACTIVATION"
(hereinafter "the Patent Application");

         WHEREAS,  HiEnergy  Technologies,  Inc., a Delaware  corporation having
offices at 1601 Alton Parkway,  Unit B, Irvine,  California  92606  (hereinafter
"ASSIGNEE")  desires to purchase the entire right, title, and interest in and to
the inventions disclosed in the Patent Application;

         NOW,  THEREFORE,  in consideration of good and valuable  consideration,
the  receipt  of  which  is  hereby   acknowledged,   ASSIGNOR   hereby  further
acknowledges that it has sold, assigned, and transferred,  and by these presents
does hereby sell, assign,  and transfer,  unto ASSIGNEE,  its successors,  legal
representatives,  and assigns,  the entire right, title, and interest throughout
the  world  in,  to,  and  under  the said  improvements,  and the  said  Patent
Application  and all Patents that may be granted  thereon,  and all  provisional
applications  relating  thereto,  and all  divisions,  continuations,  reissues,
reexaminations,  renewals,  and extensions  thereof,  and all rights of priority
under  International  Conventions and  applications  for Letters Patent that may
hereafter be filed for said  improvements or for the said Patent  Application in
any country or  countries  foreign to the United  States;  and  ASSIGNOR  hereby
authorizes and requests the  Commissioner  of Patents of the United States,  and
any Official of any country  foreign to the United  States,  whose duty it is to
issue patents on applications as aforesaid, to issue all Letters Patent for said
improvements  and all Letters Patents  resulting from the Patent  Application to
ASSIGNEE, its successors, legal representatives, and assigns, in accordance with
the terms of this Agreement.

         ASSIGNOR does hereby sell,  assign,  transfer,  and convey to ASSIGNEE,
its successors,  legal  representatives,  and assigns all claims for damages and
all remedies arising out of any violation of the rights assigned hereby that may
have  accrued  prior  to the  date of  assignment  to  ASSIGNEE,  or may  accrue
hereafter,  including,  but not limited to, the right to sue for,  collect,  and
retain damages for past infringements of the said issued Letters Patents;

         ASSIGNOR  hereby  covenants  and  agrees  that it will  communicate  to
ASSIGNEE, its successors, legal representatives,  and assigns any facts known to
ASSIGNOR  respecting the Patent  Application  immediately upon becoming aware of
those facts, and that it will testify in any legal  proceeding  involving any of
the Patent  Application,  will sign all lawful papers,  execute all  divisional,
continuing,  and  reissue  applications,  make  all  rightful  oaths,  and  will
generally  do  everything  possible  to  aid  ASSIGNEE,  its  successors,  legal
representatives, and assigns to obtain and enforce the Patent Application in all
countries.

         IN TESTIMONY  WHEREOF, I hereunto set my hand and seal this 17th day of
November, 2003.

                              HiEnergy Microdevices, Inc.



                              By: /s/ Bogdan C. Maglich
                                  ------------------------------------
                                  Name Printed: Bogdan C. Maglich, Ph.D.
                                  Title: CEO & Chief Scientist


<PAGE>

STATE OF California     |
                        |       ss.
COUNTY OF Orange        |


         On Nov. 17,  2003,  before me,  Ienneke  Suwito_,  personally  appeared
Bogdan C. Maglich, Ph.D. personally known to me (or proved to me on the basis of
satisfactory  evidence) to be the person whose name is  subscribed to the within
instrument,  and  acknowledged to me that he executed the same in his authorized
capacity,  and that by his signature on the instrument the person, or the entity
upon behalf of which the person acted, executed the instrument.

         WITNESS my hand and official seal.

[SEAL]
                                        /s/ Ienneke Suwito
                                        -----------------------------------
                                        Notary Signature