Re: PCs and Tritium

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

>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.
>
>

Yes, really !  15% is easy to reproduce when using the proper smear and 
procedure.  This unit is a windoless unit hemisphere chamber design.  Very 
effective !