In reply to  David Roberson's message of Sat, 29 Oct 2011 12:10:37 -0400 (EDT):
Hi David,
[snip]
I suggest you take a look at http://en.wikipedia.org/wiki/Betavoltaics
Regards,

Robin van Spaandonk

http://rvanspaa.freehostia.com/project.html

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