?NVLAP category V C

["John Zummo" <zummo@gene.com>]

I am writing my MS thesis on a LiF dosimeter design.  Is anyone testing
in the beta mixture category using a standard 3 or 4 element badge?  I
can just get by using a response factor midway between that for Sr/Y-90
and Tl-204, but am naturally overresponding in one case and
underresponding in the other.  How are people handling this category?

My badge does not have filtration to distinguish the beta energies.  The
badge is designed to handle both neutrons and photons as well, so three
elements are filtered with Cu, Cd, and plastic.  A mylar window covers
the sole thin beta-detecting chip.    

Please respond to zummo@gene.com

Thank you in advance for the help.



John Zummo, RSO
EH&S - MS 71
Genentech, Inc.
460 Point San Bruno Boulevard
South San Francisco  CA  94080-4990

(415) 225-2959
(415) 225-5008 (fax)

zummo@gene.com