Re: cpm conversion to mrem/hr

[b.mckavanagh@cqu.edu.au (Byron McKavanagh)]

Dear Radsafers:

Before Melissa declares this off-topic, my $0.02 worth:

* For an end or side window GM tube, I understand that the calibration
curves are relatively flat from gamma energies between 50 keV to (upper
limit?) a few MeV.  In this case, there is a simple Calibration Constant
that converts counts to dose units.  For our Eberline ESP-2, using a HP-270
GM probe, this is specified during calibration, +-10%.

* For pancake GM tubes, the energy response is more peaked at intermediate
energies, and so one would have to be more careful, but could still make
"Rule of Thumb" estimates.

*  For the benefit of any parochialists out there, please note that A U S T
R A L I A does not equal A U S T R I A, as many seem to think.
Australians are not sarcastic, nor do we use it in scientic communications.
(Is that the same as a Cretan saying all Cretans are liars??)


---------------------------------oOOo-(_)-oOOo--------------------------
Byron McKavanagh,
Radiation Officer,
Department of Applied Physics,
Central Queensland University
Rockhampton 4702 Australia.
Ph 079-309625                   Fax: 079-309209
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~)(~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"Just remember you are unique.  Just like everyone else."
(Dictionary of Cynical Quotations, 1996 ed.)
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