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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.
P. Lambropoulos
Nuclear Science and Engineering | Volume 46 | Number 3 | December 1971 | Pages 356-365
Technical Paper | doi.org/10.13182/NSE71-A22372
Articles are hosted by Taylor and Francis Online.
Neutron total and scattering cross sections of 238U have been interpreted in terms of a local, energy-dependent spherical optical potential with spin orbit coupling. Total cross sections to 10.0 MeV and scattering cross sections to 1.5 MeV, at 2.0 MeV and at 7.0 MeV were calculated and compared with reported experimental results and with values measured explicitly for support of these calculations. The statistical model was used in calculating elastic and inelastic scattering processes, and capture and fission reactions were taken into account. The effects of resonance width fluctuations and correlations and of deformation were examined. Satisfactory agreement was achieved between calculation and experiment.