Fwd: Re: mcnp-forum: PuBe13 Physical Properties

["Erik F. Shores" <eshores@LANL.GOV>]

Good afternoon--



This request from another list:



>>Hello all.  Does anyone have information on the density of the

>>plutonium-beryllium intermetallic PuBe13?



earned my quick reply:



>My experience has shown this to be difficult number to track down. One 

>readily available reference I have [Stewart, L., "Neutron Spectrum and 

>Absolute Yield of Plutonium-Beryllium Source," Phys Rev, 98, 740 (1955)] 

>lists it as 3.7 g/cc.

>

>Be aware, however, that such neutron sources have varying density values 

>resulting from production and a quoted value is probably for a specific 

>source. Highlighting that variation, another reference [Nuclear 

>Technology, 120, 19 (1997)] uses a value of 4.35 g/cc.



As such sources are periodically mentioned here (usually in terms of 

spectra), I thought this might be of interest. In addition, I thought I'd 

try to drum up additional references for my collection--and to forward to 

the initial requester. Does any RADSAFER have a readily available density 

value for the PuBe compound? If so, could you please forward it to me? 

Thank you!



Regards,

Erik

________________________________________

Erik F. Shores

Los Alamos National Laboratory

ESH-12, Radiological Engineering Team

Mailto:eshores@lanl.gov

505.665.7643 (phone)

505.667.9726 (facsimile) 



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