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Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
H. CONDÉ, N. STARFELT
Nuclear Science and Engineering | Volume 11 | Number 4 | December 1961 | Pages 397-404
Technical Paper | doi.org/10.13182/NSE61-A26041
Articles are hosted by Taylor and Francis Online.
Using a large liquid scintillator as the fission neutron detector the number of prompt neutrons per fission, ν, for Th232 and U238 have been measured at neutron energies of 3.6 and 14.9 Mev. The values for U238 of 2.79 ± 0.09 and 4.75 ± 0.12 are in good agreement with earlier accurate measurements while the Th232 values of 2.42 ± 0.10 and 4.43 ± 0.13 agree with the results of Kuzminov et al. and of Leroy but not so well with that of Smith et al. The parameters of the equation (En) = (0) + a·En, where En is the neutron energy in Mev, have been obtained by fitting a straight line to the available data using the least mean square method yielding (En) = 1.87 + 0.177 En for Th232 and (En) = 2.30 + 0.154 En for U238.
