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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. C. Haight, S. M. Grimes, R. G. Johnson, H. H. Barschal
Nuclear Science and Engineering | Volume 87 | Number 1 | May 1984 | Pages 41-47
Technical Paper | doi.org/10.13182/NSE84-A17444
Articles are hosted by Taylor and Francis Online.
Energy and angular distributions of alpha particles from the bombardment of carbon foils with 14.1-MeV neutrons were measured with a magnetic spectrometer. The observations included alpha particles with energies above 1 MeV emitted at angles between 19 and 135 deg. The cross section for alpha-particle emission obtained by integrating over emission angle was 402 ± 46 mb. From these data and from evaluations of the elastic and inelastic scattering cross sections, a kerma factor (energy deposition) of 1.84 ± 0.16 × 10−9 cGy·cm2 was deduced. The present cross section for the 12C(n,n′3α) reaction is much lower than previous measurements.
