RE: GM Counters in High Backgrounds

["EUBANKS, JOHN M" <JEUBANK@entergy.com>]

Correct me if I am wrong. The Eberline model E-140 does not have dead time
correction. Nor does it need dead time correction for it's ranges of
operation. 
The lower the range the better the accuracy. Remember the accuracy is a plus
or minus thing, therefore, the higher range(less accuracy) could indicate
higher or lower as compared to the lower range(more accuracy).

Also if you are having a problem with the E-140 not meeting the accuracy
spec.'s, try cleaning or replacing the calibration pot's. 

Later...People to do and things to see!

-----Original Message-----
From: MacLellan, Jay A [mailto:jay.a.maclellan@pnl.gov]
Sent: Tuesday, October 12, 1999 5:58 PM
To: Multiple recipients of list
Subject: RE: GM Counters in High Backgrounds


If the net count rate increases in low background areas, I would suspect
there
is a bias in the calibration factor for one of the ranges, or some detector
dead-time is unaccounted for.  

-----Original Message-----
From:	Kurt [SMTP:kurtd@locomp.net]
Sent:	Tuesday, October 12, 1999 2:24 PM
To:	Multiple recipients of list
Subject:	Re: GM Counters in High Backgrounds


--------------B8081EC410C65BDD4BC3F9EF
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit

I replied with the real world problems using a frisker in a high background
area. Theory is nice with all those COOL calculations. What I believe you
are
looking for is some raw data. Try it yourself. Count a smear in both
location
and see what you get. The best response I have seen yet is from Rodney
Bauman.
Yes. I think he hit it on the head. GO CONSERVATIVE!!!!!!!!!!!! Listen to
your
RP Techs. They deal with this subject matter every day.

Joseph Guido wrote:



************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html