Scission dynamics with 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:
-
- Univ. of Washington, Seattle, WA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- 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)
- 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:https://doi.org/10.1103/PhysRevC.97.064619
Bertsch, G. F., Younes, W., and Robledo, L. M. Fri .
"Scission dynamics with K partitions". United States. doi:https://doi.org/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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Works referencing / citing this record:
Diabatic paths through the scission point in nuclear fission
journal, August 2019
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Fission dynamics of from saddle to scission and beyond
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Decay widths at the scission point in nuclear fission
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Angular momentum of fission fragments
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Role of dynamic pairing correlations in fission dynamics
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