Fission product yields (FPY) are essential ingredients for addressing questions relevant to a range of basic and applied physics. Examples include the cosmic nucleosynthesis processes that created the elements from iron to uranium, reactor antineutrino studies, development of advanced reactor and transmutation systems, and many national security applications. The goal of this study is to provide high-precision and energy dependent FPY data using monoenergetic neutron beams with energies between 0.5 and 15 MeV. An overview of the recent experimental results obtained by the LLNL-LANL-TUNL collaboration will be presented. The energy dependent FPY results will be discussed in terms of (i) contributions from different chances of fission, (ii) variation of independent mass yields with incident neutron energy due to contributions of different fission modes, (iii) washing out of even-odd effects in charge distribution of fission fragment yields with increase of the neutron energy, and (iv) fragment mass yields distributions after emission of prompt neutrons.
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Presenters
Anton P Tonchev
Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory
Authors
Anton P Tonchev
Lawrence Livermore Natl Lab, Lawrence Livermore National Laboratory
Anthony P Ramrez
LLNL, Lawrence Livermore National Laboratory
Ronald C Malone
Lawrence Livermore National Laboratory
Nicolas F Schunck
Lawrence Livermore National Laboratory
Jack A Silano
Lawrence Livermore National Laboratory
Mark A Stoyer
Lawrence Livermore National Laboratory
Mark H Verriere
Lawrence Livermore National Laboratory
Matthew A Gooden
Los Alamos National Laboratory
Jerry Wilhelmy
Los Alamos Natl Lab, Los Alamos National Laboratory
Sean Finch
Duke University, Duke University & Triangle Universities Nuclear Laboratory
Calvin R Howell
Duke University, Duke University & Triangle Universities Nuclear Laboratory
Werner Tornow
Duke University, Duke University & Triangle Universities Nuclear Laboratory
