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Re: Airport Dosimetry



There should be essentially NO response from a TLD going through one 
of today's airpot x-ray units. IF this were not true, all films 
(photographic) would have serious fogging problems. Your answer lies 
elsewhere ...

Look at your algorithm ... and raw element responses. Probably an 
exposure due to angularity (maybe intentional) whereby the Li show 
higher response (where the neutron is calculated from), and the CaSO 
(element 4)  shows little response (where you may be getting the 
gamma component. The fact that you have x-ray identified, means that 
CaSO element 3 has a high response... 

A typical x-ray response is very little Li and NO CaSO elemnt 4 
response. Only element 3 should show a response of any 
significance...  Sheck for intentional irradiation.

------------------
Sandy Perle
Technical Director
ICN Dosimetry Division
Costa Mesa, CA 92626
Office: (800) 548-5100 x2306 
Fax:    (714) 668-3149
  
sandyfl@ix.netcom.com
sperle@icnpharm.com

ICN Dosimetry Website:
http://www.dosimetry.com

Personal Homepage:
http://www.geocities.com/CapeCanaveral/1205

"The object of opening the mind, as of opening 
the mouth, is to close it again on something solid"
              - G. K. Chesterton -