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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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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ANS designates Armour Research Foundation Reactor as Nuclear Historic Landmark
The American Nuclear Society presented the Illinois Institute of Technology with a plaque last week to officially designate the Armour Research Foundation Reactor a Nuclear Historic Landmark, following the Society’s decision to confer the status onto the reactor in September 2024.
N. J. Pattenden
Nuclear Science and Engineering | Volume 17 | Number 3 | November 1963 | Pages 371-380
Technical Paper | doi.org/10.13182/NSE63-A17385
Articles are hosted by Taylor and Francis Online.
The ORNL chopper has been used to measure the neutron total cross sections of samples of fission product samarium and iodine in the thermal and resonance energy regions. At 2200 meters/sec, the total cross section of Sm151 was found to be (15000 ± 1800) barns, and the absorption cross section of I129 (28.0 ± 2) barns. The variation of cross section of Sm151 with energy in the thermal region was found to be strongly affected by a bound level, but in the case of I129 the absorption cross section could be described by a “1/V” dependence. In the higher energy region, resonance parameters were obtained for Sm151, I127, and I129 by area analysis of the observed transmission dips. In addition, a shape analysis method was used for the lower energy resonances in Sm151. The following values for the level spacings and strength functions (per spin state), and resonance absorption integrals were obtained:
