Microscopic modeling of mass and charge distributions in the spontaneous fission of 240Pu

Sandhukhan, Jhilam; Nazarewicz, Witold; Schunck, Nicolas

doi:10.1103/PhysRevC.93.011304

Microscopic modeling of mass and charge distributions in the spontaneous fission of ²⁴⁰Pu

Journal Article · Wed Jan 20 00:00:00 EST 2016 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.93.011304· OSTI ID:1235385

Sandhukhan, Jhilam ^[1]; Nazarewicz, Witold ^[2]; Schunck, Nicolas ^[3]

Variable Energy Cyclotron Centre, Kolkata (India); Michigan State Univ., East Lansing, MI (United States); Michigan State University
Michigan State Univ., East Lansing, MI (United States); Univ. of Warsaw, Warsaw (Poland)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

We propose a methodology to calculate microscopically the mass and charge distributions of spontaneous fission yields. We combine the multidimensional minimization of collective action for fission with stochastic Langevin dynamics to track the relevant fission paths from the ground-state configuration up to scission. The nuclear potential energy and collective inertia governing the tunneling motion are obtained with nuclear density functional theory in the collective space of shape deformations and pairing. As a result, we obtain a quantitative agreement with experimental data and find that both the charge and mass distributions in the spontaneous fission of ²⁴⁰Pu are sensitive both to the dissipation in collective motion and to adiabatic fission characteristics.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Michigan State Univ., East Lansing, MI (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)

Sponsoring Organization:: DOE Office of Science; USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)

Grant/Contract Number:: AC52-07NA27344; NA0002574; NA0002847; SC0008511

OSTI ID:: 1235385

Alternate ID(s):: OSTI ID: 1235765
OSTI ID: 1258522

Report Number(s):: LLNL-JRNL--678675

Journal Information:: Physical Review C, Journal Name: Physical Review C Journal Issue: 1 Vol. 93; ISSN PRVCAN; ISSN 2469-9985

Publisher:: APSCopyright Statement

Country of Publication:: United States

Language:: English

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