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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.
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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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Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
W. Zobel, F. C. Maienschein, J. H. Todd, and G. T. Chapman
Nuclear Science and Engineering | Volume 32 | Number 3 | June 1968 | Pages 392-406
Technical Paper | doi.org/10.13182/NSE68-A20222
Articles are hosted by Taylor and Francis Online.
Determining the contribution of secondary gamma rays to the radiation dose produced by charged particles in space requires a knowledge of the cross sections for gamma-ray production by protons and alpha particles. The only data of this type that have been available have been for ∼145-MeV protons. In the experiment reported here, gamma-ray spectral measurements were made for protons of 16, 33, 56, and 160 MeV and alpha particles of 59 MeV incident on targets of low- and medium-Z materials. Absolute spectra were obtained, generally in the backward direction, with coincidence (pair) or anticoincidence (total-absorption) scintillation spectrometers. The analysis method used to correct for the imperfect spectrometer response yielded quantitative error estimates for the resultant spectra. A few measurements were made in the forward direction or at 90° to distinguish deviations from isotropy which were marked only for 16-MeV protons incident on a carbon target. From the spectra, cross sections were obtained for the production of specific gamma rays. Tables of these results include the probable nuclear reactions which produced the gamma rays. The production cross sections are plotted vs the average proton energy in the target for individual gamma rays for C and O. For each element, these individual production cross sections are added and the sums, which decrease with increasing proton energy, are compared with the total nonelastic cross sections predicted on the basis of intranuclear cascade calculations. The reasonably smooth variations of the total cross sections for gamma-ray production with atomic number are also shown. The proton inelastic scattering cross sections for specific levels correspond within error to 14-MeV neutron scattering data.