Energy dependence of the prompt γ-ray emission from the (d,p)-induced fission of U*234 and Pu*240

Rose, Sunniva J.; Zeiser, Fabio; Wilson, J. N.; Oberstedt, A.; Oberstedt, S.; Siem, S.; Tveten, G. M.; Bernstein, L. A.; Bleuel, D. L.; Brown, J. A.; Campo, L. Crespo; Giacoppo, F.; Gorgen, A.; Guttormsen, M.; Hadynska, K.; Hafreager, A.; Hagen, T. W.; Klintefjord, M.; Laplace, T. A.; Larsen, A. C.; Renstrom, T.; Sahin, E.; Schmitt, C.; Tornyi, T. G.; Wiedeking, M.

doi:10.1103/PhysRevC.96.014601

Title: Energy dependence of the prompt $γ$ -ray emission from the $(d, p)$ -induced fission of ${}^{234}U^{}$ and ${}^{240}{Pu}^{}$

Journal Article · Wed Jul 05 00:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.014601· OSTI ID:1378551

Rose, Sunniva J. ^[1]; Zeiser, Fabio ^[1]; Wilson, J. N. ^[2]; Oberstedt, A. ^[3]; Oberstedt, S. ^[4]; Siem, S. ^[1]; Tveten, G. M. ^[1]; Bernstein, L. A. ^[5]; Bleuel, D. L. ^[6]; Brown, J. A. ^[7]; Campo, L. Crespo ^[1]; Giacoppo, F. ^[8]; Gorgen, A. ^[1]; Guttormsen, M. ^[1]; Hadynska, K. ^[1]; Hafreager, A. ^[1]; Hagen, T. W. ^[1]; Klintefjord, M. ^[1]; Laplace, T. A. ^[9]; Larsen, A. C. ^[1] more »

Univ. of Oslo, Oslo (Norway)
CNRS/Univ. Paris-Sud, Univ. Paris Saclay, Orsay Cedex (France)
Extreme Light Infrastructure - Nuclear Physics (ELI-NP), Bucharest-Magurele (Romania)
European Commission, Geel (Belgium)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Univ. of Oslo, Oslo (Norway); Helmholtz Institute Mainz, Mainz (Germany); GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
Univ. of California, Berkeley, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Grand Accelerateur National d'lons Lourd (France)
iThemba LABS, Somerset West (South Africa)

Prompt-fission γ rays are responsible for approximately 5% of the total energy released in fission, and therefore important to understand when modeling nuclear reactors. In this work we present prompt γ-ray emission characteristics in fission as a function of the nuclear excitation energy of the fissioning system. Emitted γ-ray spectra were measured, and γ-ray multiplicities and average and total γ energies per fission were determined for the U(d,pf)233 reaction for excitation energies between 4.8 and 10 MeV, and for the Pu(d,pf)239 reaction between 4.5 and 9 MeV. The spectral characteristics show no significant change as a function of excitation energy above the fission barrier, despite the fact that an extra -5 MeV of energy is potentially available in the excited fragments for γ decay. The measured results are compared with model calculations made for prompt γ-ray emission with the fission model code gef. Further comparison with previously obtained results from thermal neutron induced fission is made to characterize possible differences arising from using the surrogate (d,p) reaction.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC52-07NA27344; AC02-05CH11231

OSTI ID:: 1378551

Alternate ID(s):: OSTI ID: 1368426; OSTI ID: 1429356

Report Number(s):: LLNL-JRNL-737322; PRVCAN

Journal Information:: Physical Review C, Vol. 96, Issue 1; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 6 works

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Title: Energy dependence of the prompt $γ$ -ray emission from the $(d, p)$ -induced fission of ${}^{234}U^{}$ and ${}^{240}{Pu}^{}$