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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.
A. J. Deruytter, I. G. Schröder, J. A. Moore
Nuclear Science and Engineering | Volume 21 | Number 3 | March 1965 | Pages 325-328
Technical Paper | doi.org/10.13182/NSE65-A20036
Articles are hosted by Taylor and Francis Online.
A more precise value of the half-life of U235, for alpha emission, has been determined from an analysis of the alpha spectrum of natural uranium. The alpha spectrum was measured using solid-state detectors and the half-life obtained by a comparison of the intensity of the resolved portion of the U235 alpha spectrum with the intensities of the U234 and U238 alpha groups. The value obtained was T1/2 = (6.92± 0.09) × 108 years.
