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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.
J. H. Dave, J. J. Egan, G. P. Couchell, G. H. R. Kegel, A. Mittler, D.J. Pullen, W. A. Schier, E.Sheldon
Nuclear Science and Engineering | Volume 91 | Number 2 | October 1985 | Pages 187-208
Technical Paper | doi.org/10.13182/NSE85-A27441
Articles are hosted by Taylor and Francis Online.
Neutron inelastic scattering from 232Th has been studied for states above 700 keV in excitation using the (n,n'γ) technique at incident energies in the 0.77- to 2.10-MeV range. The gamma-ray measurements employing a high-resolution Ge(Li) spectrometer show 74 transitions from 46 levels above the first excited state. Gamma-ray branching ratios and production cross sections have been determined. Inferred level cross sections are compared to compound-nucleus statistical model calculations, which generally represent the measurements fairly well at lower incident energies but become increasingly discrepant at higher bombarding energies, and to the ENDF/B-V evaluation.