Re: 50% H-3 efficiency

[gascione@ss_031.pppl.GOV (George Ascione)]

>This is not physically possible except by Internal Liquid Scintillation  
>Spectrophotometry with an unquenched sample.
>
>
>Paul W. Shafer
>University of Illinois at Urbana-Champaign
>
>Begin forwarded message:
>
>Date: Sat, 22 Oct 94 12:51:45 -0500
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>From: Keith <WELCH@CEBAF.GOV>
>To: Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
>Subject: Re: PCs and Tritium
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>
>Fifteen percent efficiency - from a H-3 swipe?  Really?  Sounds too good to be
>true.  Is this a windowless unit?  I would have guessed an efficiency of much
>less than a percent.  Have never tried to count H-3 on a PC but based on our
>C-14 attempts, would not have thought it very promising.
>
>
>
Who said 50% ???   We can easily reproduce 15% based on the smear type and 
procedure used.  Data is available.