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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.
R. R. Spencer, H. Beer
Nuclear Science and Engineering | Volume 60 | Number 4 | August 1976 | Pages 390-398
Technical Paper | doi.org/10.13182/NSE76-A26900
Articles are hosted by Taylor and Francis Online.
The neutron capture cross section of 59Co has been measured in the energy range from 6 to 200 keV using an 800-ℓ liquid-scintillator detector in conjunction with a pulsed 3-MV Van de Graaff generator as a neutron source. The excellent time resolution of the system, full width of 2.8 nsec at half maximum, permitted derivation of radiation widths for single s-wave resonances to 50-keV neutron energy. Average radiation widths of 0.564 ± 0.024 eVand 0.486 ± 0.016 eV were found for seven J = 3 resonances and ten J = 4 resonances, respectively. No significant correlation between and Γy was found for either spin state. The Maxwellian-averaged cross section for kT = 30 keV was found to be 38 mb over the region from 0.0253-eV to 200-keV neutron energy.
