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The objectives of MSTD are: promote the advancement of materials science in Nuclear Science Technology; support the multidisciplines which constitute it; encourage research by providing a forum for the presentation, exchange, and documentation of relevant information; promote the interaction and communication among its members; and recognize and reward its members for significant contributions to the field of materials science in nuclear technology.
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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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NRC cuts fees by 50 percent for advanced reactor applicants
The Nuclear Regulatory Commission has announced it has amended regulations for the licensing, inspection, special projects, and annual fees it will charge applicants and licensees for fiscal year 2025.
E. E. Lewis, R. Pfeffer
Nuclear Science and Engineering | Volume 27 | Number 3 | March 1967 | Pages 581-585
Technical Paper | doi.org/10.13182/NSE86-A17625
Articles are hosted by Taylor and Francis Online.
A formalism based on the Dirac chord method is extended from a previous paper to provide an analytical method for determining the properties of small fission-fragment sources of arbitrary convex geometry. The fragment escape probabilities, energy spectra, and energy deposition fractions are determined for spherical, slab, and cylindrical uranium-dioxide sources, using an energy-loss model that contains initial-energy spectra and range-energy relations for 42 fragment species. For comparison, calculations are also made, using two simplified energy-loss models. Finally, a method is given for generalizing the results to sources containing materials other than uranium dioxide.