Re: Technical Question (Thanks)

["Sandy Perle" <sandyfl@earthlink.net>]

Ted stated the following:

> You didn't mention the energy of the x-ray beam.  If it is really soft like
> from a diffraction machine - the covering on the TLD and or the thickness
> of the chip make a difference.

The above is correct. However, if you are using a multiple element 
TLD, the low energy x-ray should not have a problem being detected. 
and, a response determined based on calibration data to "that" 
spectra being assessed. If it is a single element TLD, the above 
calibration becomes crucial, since you are now making an assumption 
as to what the energy is, and, what calibration and correction 
factors will be used.  In the multi-element dosimeter, the 
approximate energy as well as the response is easily determined. 
DOELAP and NVLAP both test down to 20 keV (NIST M30 Category), and 
the various elemental ratios can easily pinpoint the approximate 
energy spectra, as well as type of radiation field being detected.

------------------
Sandy Perle
Technical Director
ICN Dosimetry Division
Costa Mesa, CA 92626
Office: (800) 548-5100 x2306 
Fax:    (714) 668-3111
  
sandyfl@earthlink.net
sperle@icnpharm.com

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

Personal Homepage:
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