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

Journal Article · · Physical Review C
 [1];  [2];  [3]
  1. Variable Energy Cyclotron Centre, Kolkata (India); Michigan State Univ., East Lansing, MI (United States)
  2. Michigan State Univ., East Lansing, MI (United States); Univ. of Warsaw, Warsaw (Poland)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Here, 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. Moreover, 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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Michigan State Univ., East Lansing, MI (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
NA0002574; AC52-07NA27344; NA0002847; SC0008511; DOE-DE-NA0002574
OSTI ID:
1235385
Alternate ID(s):
OSTI ID: 1235765; OSTI ID: 1258522
Report Number(s):
LLNL-JRNL-678675; PRVCAN
Journal Information:
Physical Review C, Vol. 93, Issue 1; ISSN 2469-9985
Publisher:
APSCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 67 works
Citation information provided by
Web of Science

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Cited By (11)

Impact of pear-shaped fission fragments on mass-asymmetric fission in actinides journal December 2018
Microscopic theory of nuclear fission: a review journal October 2016
Challenges in nuclear structure theory journal March 2016
Trends in nuclear astrophysics journal May 2016
r -process nucleosynthesis: connecting rare-isotope beam facilities with the cosmos journal July 2019
Review on the progress in nuclear fission—experimental methods and theoretical descriptions journal September 2018
Performance of the Fourier shape parametrization for the fission process journal March 2017
Superfluidity in nuclear systems and neutron stars journal September 2019
Microscopic Theory of Nuclear Fission: A Review text January 2015
Impact of nuclear mass uncertainties on the $r$-process text January 2015
Fission properties of superheavy nuclei for r-process calculations text January 2017

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