Re: HVL or TVL values

[stabin@esper.com (Mike Stabin)]

>Does anyone know of a good source of information on the HVL or TVL 
>values (prefer the latter) for individual radionuclides?  

I have a list of a good number of radionuclides readily available, with
specific gamma ray constants, and thicknesses of lead that will produce
attenuation factors for a point source, not in good geometry, of 0.5, 0.1,
0.01, 0.001, and (I think) 0.0001.  I'm not at work now, so I forget exactly
how low the numbers go.  They were derived for mostly medical-related
nuclides, but we can see how much overlap with your list, and we can
probably generate the other values you need.  Send the list to me, if you
want, whichever way is easiest.

Mike Stabin
Radiation Internal Dose
  Information Center
Oak Ridge, TN
423-576-3449  ph
423-576-8673  fax
stabinm@orau.gov  work e-mail