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Cross sections for neutron-induced fission of U-235, U-238, Bi-209, and Pb-nat in the energy range from 33 to 200 MeV measured relative to n-p scattering

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Nolte, R. Allie, M. S. Brooks, F. D. Buffler, A. Dangendorf, V. Meulders, Jean-Pierre [UCL] Weierganz, M.

The cross sections for neutron-induced fission of U-235, U-238, Bi-209, and Pb-nat in the intermediate energy region were measured using parallel plate fission ionization chambers. The experiments were carried out relative to the differential n-p scattering cross section using quasi-monoenergetic neutron beams with peak energies ranging from 33 to 200 MeV The experimental cross sections were compared to International Nuclear Data Committee reference fission cross sections, to results of nuclear model calculations, and to cross sections calculated with the nuclear models implemented in the radiation transport code MCNPX. The experimental results for U-235 and Bi-209 are consistent with the available reference cross sections and theoretical data while the U-238(n,f) cross section exceeds the reference cross section systematically by similar to 7% between 30 and 60 MeV The experimental resultsfor Pb-nat agree with a parameterization of other experimental data for Pb-nat(n,f).

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2007
Language Anglais
Journal information "Nuclear Science and Engineering : research and development related to peaceful utilization of nuclear energy" - Vol. 156, no. 2, p. 197-210 (2007)
Peer reviewed yes
Publisher Amer Nuclear Society (La Grange Pk)
issn 0029-5639
e-issn 1943-748X
Publication status Publié
Affiliation UCL - Autre
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Bibliographic reference Nolte, R. ; Allie, M. S. ; Brooks, F. D. ; Buffler, A. ; Dangendorf, V. ; et. al. Cross sections for neutron-induced fission of U-235, U-238, Bi-209, and Pb-nat in the energy range from 33 to 200 MeV measured relative to n-p scattering. In: Nuclear Science and Engineering : research and development related to peaceful utilization of nuclear energy, Vol. 156, no. 2, p. 197-210 (2007)
Permanent URL http://hdl.handle.net/2078.1/37563