Subject: Re: demron
From: hfshaw-ga on 08 Mar 2006 12:54 PST
Actually, there *are* published (if you accept conference proceedings
as "published") measurements to support at least some of the claims
made for Demron.
Both Batelle Pacific Northwest National Labpratory and Lawrence
Livermore National Laboratory (LLNL) have made measurements of the
attenuation of photons (x-rays and gamma rays), as well as electrons
(beta particles) of Demron and compared these results to other
standard radiation shielding materials. These reports are available
at the manufacturer's website at http://www.radshield.com/research_results.cfm. The LLNL report formed
the basis for a conference paper and presentation at the 2003 American
Nuclear Society meeting in San Diego (paper also available at the
above URL, and also at the LLNL on-line library at http://www.llnl.gov/tid/lof/documents/pdf/246495.pdf).
The bottom line is that the radiation-attenuation characteristics of
Demron are very similar to those of the element tantalum. Plots of
the mass attenuation coefficients as a function of energy for these
two materials are very similar.