Re[2]: 137Cs check sources

[TDC@ehssun.lbl.gov]

>Warren,
>If this is truly a high radiation area, how do you preclude a GM from
>saturating in a high field and indicating no dose? I have always
>emphasized that an ION CHAMBER is the only proper instrument to use when
>entering a potential High Radiation Area. Is there some new circuitry in
>these GMs that I am not aware of?

>Michael A. Kay, ScD, CHMM
>makay@teleport.com

This GM "saturation" issue is a red herring and hasn't been an issue for
YEARS!

The problems with NOT with the GM tube but with the electronic circuitry.
Circuitry that does NOT exhibit this effect is simple and well known and
used on virtually any GM instrument that is still around and working
(except maybe for a few in the collections of us "archivists").

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