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Bethe–Feynman formula
The Bethe-Feynman efficiency formula, a simple method for calculating the yield of a fission bomb,[1] was first derived in 1943 after development in 1942. Aspects of the formula are speculated to be secret restricted data.[2]
Related formula
a = internal energy per gram
b = growth rate
c = sphere radius
\( a \approx (bc)^2 f \)
A numerical coefficient would then be included to create the Bethe–Feynman formula—increasing accuracy more than an order of magnitude.[3]
See also
Richard Feynman
Hans Bethe
Robert Serber
References
http://nuclearweaponarchive.org/Nwfaq/Nfaq4-1.html
Meeting and working with Richard Feynman at Los Alamos, Web of Stories, story by Hans Bethe recorded in December 1996, last accessed 2015/04/20.
Hans Volland (1995). Handbook of atmospheric electrodynamics, Volume 2. CRC Press. ISBN 0-8493-2520-X.
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