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Division Spotlight
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.
Meeting Spotlight
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
J. C. Young, J. M. Neill, P. d’Oultremont, E.L. Slaggie, C. A. Preskitt
Nuclear Science and Engineering | Volume 48 | Number 1 | May 1972 | Pages 45-50
Technical Paper | doi.org/10.13182/NSE72-A22455
Articles are hosted by Taylor and Francis Online.
Neutron spectra have been measured between 50 eV and 8 MeV by the time-of-flight method in the core of a fast subcritical assembly, designated STSF-1A. This core is loaded with plate-type elements consisting of BeO, enriched uranium, and depleted uranium. The measurements were made at the surface of the central BeO plate. Reduction of the data and comparison to transport calculations followed the procedures used for the STSF-2 and STSF-2A assemblies, which were described in detail in a previous paper. The STSF-1A is similar in most significant details to ZPR-3 Assembly 57, built at ANL/Idaho, in which the spectrum was measured with a proton recoil detector, and this similarity permitted a comparison of the time-of-flight and proton-recoil techniques. The two methods have been found to be generally in satisfactory agreement.