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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.
Alan B. Smith
Nuclear Science and Engineering | Volume 155 | Number 1 | January 2007 | Pages 74-83
Technical Paper | doi.org/10.13182/NSE07-A2645
Articles are hosted by Taylor and Francis Online.
Differential neutron elastic-scattering cross sections of 197Au are measured from [approximately equal to]4.5 to 10.0 MeV at incident-neutron energy intervals of [approximately equal to]0.5 MeV. These results are combined with previous lower-energy work by the author and associates to form a neutron-scattering database extending from [approximately equal to]0.3 to 10.0 MeV. A few elastic-scattering distributions and total cross sections from the literature are added to it, and the composite is interpreted in terms of optical-statistical, dispersion, and coupled-channels models. The results are compared with models in the literature and with relevant portions of the ENDF/B-VI nuclear data file. A collective rotational model for the prediction of neutron interactions in this mass-energy region is suggested.