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NRC proposes changes to its rules on nuclear materials
In response to Executive Order 14300, “Ordering the Reform of the Nuclear Regulatory Commission,” the NRC is proposing sweeping changes to its rules governing the use of nuclear materials that are widely used in industry, medicine, and research. The changes would amend NRC regulations for the licensing of nuclear byproduct material, some source material, and some special nuclear material.
As published in the May 18 Federal Register, the NRC is seeking public comment on this proposed rule and draft interim guidance until July 2.
Randall K. Cole, Jr.
Nuclear Science and Engineering | Volume 55 | Number 1 | September 1974 | Pages 85-88
Technical Paper | doi.org/10.13182/NSE74-A23969
Articles are hosted by Taylor and Francis Online.
The lifetime distribution for initially monoenergetic photons subject to relativ-istic Compton (Klein-Nishina) scattering is evaluated using an analog of neutron slowing-down theory. By using reasonable approximations to the energy dependence of photon cross sections, this distribution and the lifetime-averaged cross sections are evaluated in closed form. The averaged cross sections are useful when all once-or-more scattered photons from a given source energy must be treated as a single group.
