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Re: Efficiency for detection of Tc-99m
- To: radsafe@romulus.ehs.uiuc.edu
- Subject: Re: Efficiency for detection of Tc-99m
- From: Robert J Wilson <RWILSON@utmem1.utmem.edu>
- Date: Fri, 21 Jan 2000 09:29:31 -0600 (CST)
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- Posting-date: Fri, 21 Jan 2000 09:29:32 -0600 (CST)
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This is a sample of ONE from 1995--INSURING you have NOTHING over the dry
source (so all particulate radiation gets to the window--nothing on window!!)
44-9 Ludlum 3.4%
?? Bicron 1.7%
?? Eberline 2.0 %
You can take that 2nd digit with a grain of salt
With pancakes use 3%--circular probe windows are very thick compared to
pancake--got only .04% with same source -- but geometry also is horrible!
rwilson@utmem.edu
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