ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Accelerator Applications
The division was organized to promote the advancement of knowledge of the use of particle accelerator technologies for nuclear and other applications. It focuses on production of neutrons and other particles, utilization of these particles for scientific or industrial purposes, such as the production or destruction of radionuclides significant to energy, medicine, defense or other endeavors, as well as imaging and diagnostics.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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
Wyoming OKs construction of TerraPower’s Natrium plant
Progress continues for TerraPower’s Natrium plant, with the latest win coming in the form of a state permit for construction of nonnuclear portions of the advanced reactor.
K. Wisshak, F. Käppeler
Nuclear Science and Engineering | Volume 76 | Number 2 | November 1980 | Pages 148-162
Technical Paper | doi.org/10.13182/NSE80-A19447
Articles are hosted by Taylor and Francis Online.
The neutron capture and subthreshold fission cross section of 241Am was measured in the energy range from 10 to 250 keV, using 197Au and 235U as the respective standards. Neutrons were produced via the 7Li(p,n) and the T(p,n) reaction with the Karlsruhe 3-MV pulsed Van de Graaff accelerator. Capture events were detected by a Moxon-Rae detector and fission events by a NE-213 liquid scintillator with pulse-shape discriminator equipment. Flight paths as short as 50 to 66 mm were used to obtain optimum signal-to-background ratio. The capture cross section could be determined with a total statistical and systematic uncertainty of 4 to 10% while the respective values are 13 to 20% for the fission cross section. The results are compared with recent data of other authors, which in some cases are severely discrepant.