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Division Spotlight
Materials Science & Technology
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.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
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.
Robert C. Axtmann, John, Bridgwater
Nuclear Science and Engineering | Volume 15 | Number 1 | January 1963 | Pages 81-89
Technical Paper | doi.org/10.13182/NSE63-A26266
Articles are hosted by Taylor and Francis Online.
Fast neutrons deposit energy in chemical systems by means of elastic scattering, inelastic scattering, and various charged particle reactions. For the particular case of 14.6 Mev neutrons and 1:1 solutions of liquid N2 and O2, the proportions by which the three classes of reactions contribute are, respectively, about 1:1:4. The initial linear energy transfer (ILET) in the same system is of the order of 20 ev/Å. Dosimetry in fast neutron radiation chemistry experiments may combine a quantitative consideration of each nuclear reaction with a measurement of the neutron flux. This method of dosimetry has been applied to experiments on the production of NO2 in 1:1 liquid N2 and O2 with the result that GNO2, the number of NO2 molecules formed per 100 ev deposited in the sample, was found equal to 0.5 ±0.1. This result is surprisingly close to that observed for irradiations by Co50 gamma rays and by electrons whose ILET is three orders of magnitude less than that for 14.6 Mev neutrons.
