Prompt Fission Neutron Multiplicities for $^{241}$ Pu using Surrogate Reactions

ORAL

Abstract

The prompt fission neutron multiplicity for \textsuperscript{241}Pu was measured at the Texas A$\&$M University Cyclotron using the NeutronSTARS array. Due to the short half-life ($14.3$ yrs) of \textsuperscript{241}Pu, inelastic scattering on \textsuperscript{242}Pu with 55 MeV alpha particles was used as a surrogate. The average neutron multiplicity ($\bar{\nu}$), and the neutron multiplicity distribution for equivalent neutron energies up to 20 MeV are discussed and reported.

*This work was performed under the auspices of the U.S. DOE by LLNL under contract DE-AC52-07NA27344, and supported by the DOE NNSA under Award Number DE-NA0000979, and through the Nuclear Science and Security Consortium under Award Number DE-NA-0003180.

–

Authors

  • Oluwatomi Akindele

    • Univ of California - Berkeley

  • Jason Burke

    • Lawrence Livermore National Laboratory

  • Robert Casperson

    • Lawrence Livermore National Laboratory

  • Richard Hughes

    • Lawrence Livermore National Laboratory

  • Eric Norman

    • Univ of California - Berkeley

  • Antti Saastamoinen

    • Texas A&M University

  • Barbara Wang

    • Lawrence Livermore National Laboratory