Induced fission of within a real-time microscopic framework
Abstract
Here, we describe the fissioning dynamics of 240Pu from a configuration in the proximity of the outer fission barrier to full scission and the formation of the fragments within an implementation of density functional theory extended to superfluid systems and real-time dynamics. The fission fragments emerge with properties similar to those determined experimentally, while the fission dynamics appears to be quite complex, with many excited shape and pairing modes. The evolution is found to be much slower than previously expected, and the ultimate role of the collective inertia is found to be negligible in this fully nonadiabatic treatment of nuclear dynamics, where all collective degrees of freedom (CDOF) are included (unlike adiabatic treatments with a small number of CDOF).
- Authors:
-
- Univ. of Washington, Seattle, WA (United States)
- Univ. of Washington, Seattle, WA (United States); Warsaw Univ. of Technology, Warsaw (Poland)
- Univ. of Washington, Seattle, WA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1247677
- Alternate Identifier(s):
- OSTI ID: 1244134
- Report Number(s):
- LA-UR-15-28092
Journal ID: ISSN 0031-9007; PRLTAO
- Grant/Contract Number:
- FG02-97ER41014; AC05-00OR22725; AC02-05CH11231; UMO-2013/08/A/ST3/00708; UMO-2012/07/B/ST2/03907; AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 12; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Bulgac, Aurel, Magierski, Piotr, Roche, Kenneth J., and Stetcu, Ionel. Induced fission of Pu240 within a real-time microscopic framework. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.122504.
Bulgac, Aurel, Magierski, Piotr, Roche, Kenneth J., & Stetcu, Ionel. Induced fission of Pu240 within a real-time microscopic framework. United States. https://doi.org/10.1103/PhysRevLett.116.122504
Bulgac, Aurel, Magierski, Piotr, Roche, Kenneth J., and Stetcu, Ionel. Fri .
"Induced fission of Pu240 within a real-time microscopic framework". United States. https://doi.org/10.1103/PhysRevLett.116.122504. https://www.osti.gov/servlets/purl/1247677.
@article{osti_1247677,
title = {Induced fission of Pu240 within a real-time microscopic framework},
author = {Bulgac, Aurel and Magierski, Piotr and Roche, Kenneth J. and Stetcu, Ionel},
abstractNote = {Here, we describe the fissioning dynamics of 240Pu from a configuration in the proximity of the outer fission barrier to full scission and the formation of the fragments within an implementation of density functional theory extended to superfluid systems and real-time dynamics. The fission fragments emerge with properties similar to those determined experimentally, while the fission dynamics appears to be quite complex, with many excited shape and pairing modes. The evolution is found to be much slower than previously expected, and the ultimate role of the collective inertia is found to be negligible in this fully nonadiabatic treatment of nuclear dynamics, where all collective degrees of freedom (CDOF) are included (unlike adiabatic treatments with a small number of CDOF).},
doi = {10.1103/PhysRevLett.116.122504},
journal = {Physical Review Letters},
number = 12,
volume = 116,
place = {United States},
year = {Fri Mar 25 00:00:00 EDT 2016},
month = {Fri Mar 25 00:00:00 EDT 2016}
}
Web of Science
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