Scission dynamics with $K$ partitions

Journal Article · 29 June 2018 · Physical Review C

DOI: https://doi.org/10.1103/PhysRevC.97.064619 · OSTI ID:1548338

Bertsch, G. F. ^[1]; Younes, W. ^[2]; Robledo, L. M. ^[3]

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1. Univ. of Washington, Seattle, WA (United States)
2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
3. Universidad Autónoma de Madrid (Spain)

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.

• Research Organization: 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) (SC-26)
• Grant/Contract Number: AC52-07NA27344; AC02-05CH11231
• OSTI ID: 1548338
• Report Number(s): LLNL-JRNL--748809; 933759
• Journal Information: Physical Review C, Journal Name: Physical Review C Journal Issue: 6 Vol. 97; ISSN PRVCAN; ISSN 2469-9985
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English