50% H-3 efficiency

[shafer@jumprun.ehs.uiuc.edu (Paul W. Shafer)]

This is not physically possible except by Internal Liquid Scintillation  
Spectrophotometry with an unquenched sample.


Paul W. Shafer
University of Illinois at Urbana-Champaign

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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.