Measurements of the {sup 235}U(n,f) cross section in the 3 to 30 MeV neutron energy region

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To improve the accuracy of the {sup 235}U(n,f) cross section, measurements have been made of this standard cross section at the target 4 facility at Los Alamos National Laboratory (LANL). The data were obtained at the 20-meter flight path of that facility. The fission reaction rate was determined with a fast parallel plate ionization chamber and the neutron fluence was measured with an annular proton recoil telescope. The measurements provide the shape of the {sup 235}U(n,f) cross section relative to the hydrogen scattering cross section for neutron energies from about 3 to 30 MeV neutron energy. The data have been ... continued below

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4 p.

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Carlson, A.D.; Wasson, O.A. & Lisowski, P.W. December 31, 1991.

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To improve the accuracy of the {sup 235}U(n,f) cross section, measurements have been made of this standard cross section at the target 4 facility at Los Alamos National Laboratory (LANL). The data were obtained at the 20-meter flight path of that facility. The fission reaction rate was determined with a fast parallel plate ionization chamber and the neutron fluence was measured with an annular proton recoil telescope. The measurements provide the shape of the {sup 235}U(n,f) cross section relative to the hydrogen scattering cross section for neutron energies from about 3 to 30 MeV neutron energy. The data have been normalized to the very accurately known value near 14 MeV. The results are in good agreement with the ENDF/B-VI evaluation up to about 15 MeV neutron energy. Above this energy differences as large as 5% are observed.

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4 p.

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OSTI as DE97007329

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  • International conference on nuclear data for science and technology, Juelich (Germany), 13-17 May 1991

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  • Other: DE97007329
  • Report No.: DOE/ER/40610--T4
  • Report No.: CONF-910503--33
  • Grant Number: AI05-91ER40610
  • Office of Scientific & Technical Information Report Number: 508736
  • Archival Resource Key: ark:/67531/metadc690658

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  • December 31, 1991

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  • Aug. 14, 2015, 8:43 a.m.

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  • Nov. 5, 2015, 12:41 p.m.

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Carlson, A.D.; Wasson, O.A. & Lisowski, P.W. Measurements of the {sup 235}U(n,f) cross section in the 3 to 30 MeV neutron energy region, article, December 31, 1991; United States. (digital.library.unt.edu/ark:/67531/metadc690658/: accessed October 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.