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Title: Scission dynamics with K partitions

Abstract

In this work, we propose a framework to calculate the dynamics at the scission point of nuclear fission, based as far as possible on a discrete representation of orthogonal many-body configurations. Assuming axially symmetric scission shapes, we use the K orbital quantum number to build a basis of wave functions. Pre-scission configurations are stable under mean-field dynamics while post-scission configurations evolve to separated fragments. In this first exploratory study, we analyze a typical fission trajectory through to scission in terms of these configurations. In conclusion, we find that there is a major rearrangement of the K occupancy factors at scission. Interestingly, very different fragment shapes occur in the post-scission configurations, even starting from the same pre-scission configuration.

Authors:
 [1];  [2];  [3]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Universidad Autónoma de Madrid (Spain)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1548338
Alternate Identifier(s):
OSTI ID: 1457827
Report Number(s):
LLNL-JRNL-748809
Journal ID: ISSN 2469-9985; PRVCAN; 933759
Grant/Contract Number:  
AC52-07NA27344; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 97; Journal Issue: 6; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Bertsch, G. F., Younes, W., and Robledo, L. M. Scission dynamics with K partitions. United States: N. p., 2018. Web. doi:10.1103/PhysRevC.97.064619.
Bertsch, G. F., Younes, W., & Robledo, L. M. Scission dynamics with K partitions. United States. doi:10.1103/PhysRevC.97.064619.
Bertsch, G. F., Younes, W., and Robledo, L. M. Fri . "Scission dynamics with K partitions". United States. doi:10.1103/PhysRevC.97.064619. https://www.osti.gov/servlets/purl/1548338.
@article{osti_1548338,
title = {Scission dynamics with K partitions},
author = {Bertsch, G. F. and Younes, W. and Robledo, L. M.},
abstractNote = {In this work, we propose a framework to calculate the dynamics at the scission point of nuclear fission, based as far as possible on a discrete representation of orthogonal many-body configurations. Assuming axially symmetric scission shapes, we use the K orbital quantum number to build a basis of wave functions. Pre-scission configurations are stable under mean-field dynamics while post-scission configurations evolve to separated fragments. In this first exploratory study, we analyze a typical fission trajectory through to scission in terms of these configurations. In conclusion, we find that there is a major rearrangement of the K occupancy factors at scission. Interestingly, very different fragment shapes occur in the post-scission configurations, even starting from the same pre-scission configuration.},
doi = {10.1103/PhysRevC.97.064619},
journal = {Physical Review C},
number = 6,
volume = 97,
place = {United States},
year = {2018},
month = {6}
}

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Cited by: 3 works
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