HVL for Xe-133

[Peter Fundarek <p.fundarek@utoronto.ca>]

Would anyone out there in radsafer land have information on 
the HVL in lead for Xe-133?  I have seen two values, 0.2 mm 
Pb and 0.8 mm Pb.  Based on its decay energies (similar to 
I-125) I would have expected something thinner at about the 
same as I-125, 0.02 mm Pb.  

Any assistance would be appreciated.

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Regards,
Peter J. Fundarek
University of Toronto
email:  p.fundarek@utoronto.ca
phone:  (416) 978-2374
fax:  (416) 971-1384

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