Re: Half value layer - Va48

[c0etxlim@mrd42.mrd.usace.army.mil (Luke I. McCormick)]

 Assuming you are looking for V-48 which has some toasty gammas, where the two with the highest intensities are 0.9 and 1.3 MeV check NCRP 49 or the rad health handbook which show the HVL at around 1.5 cm Pb.
Note that there is a 2.2 MeV gamma but that it has only a 2.5% intensity This gamma would need about 1.8 cm PB for a HVL

Luke McCormick c0etxlim@mrd42.mrd.usace.army.mil
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> A friend of mine wants a reference to a paper, book, etc. that has the
>  half value layer (of lead) for Va 48.  Now I guess that means that the VA48
>  emits X or gamma rays and there are corresponding half value layers for them.
>  Does anyone have a reference?
> 
> Radiation Protection, Ministry of Health, British Columbia
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