Multidimensional Skyrme-density-functional study of the spontaneous fission of 238U
Abstract
Here, we determined the spontaneous fission lifetime of 238U by a minimization of the action integral in a three-dimensional space of collective variables. Apart from the mass-distribution multipole moments Q20 (elongation) and Q30 (left–right asymmetry), we also considered the pairing-fluctuation parameter λ2 as a collective coordinate. The collective potential was obtained self-consistently using the Skyrme energy density functional SkM*. The inertia tensor was obtained within the nonperturbative cranking approximation to the adiabatic time-dependent Hartree–Fock–Bogoliubov approach. The pairing-fluctuation parameter λ2 allowed us to control the pairing gap along the fission path, which significantly changed the spontaneous fission lifetime.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); The Niewodniczanski Institute of Nuclear Physics, Krakow (Poland)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Warsaw, Warsaw (Poland); Univ. of Jyvaskyla (Finland)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Warsaw, Warsaw (Poland)
- Univ. of Warsaw, Warsaw (Poland)
- Publication Date:
- Research Org.:
- Michigan State Univ., East Lansing, MI (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1233541
- Alternate Identifier(s):
- OSTI ID: 1338504
- Grant/Contract Number:
- NA0002574; AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Acta Physica Polonica. Series B
- Additional Journal Information:
- Journal Volume: 46; Journal Issue: 3; Journal ID: ISSN 0587-4254
- Publisher:
- Jagiellonian University
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Sadhukhan, J., Mazurek, K., Dobaczewski, J., Nazarewicz, W., Sheikh, J. A., and Baran, A.. Multidimensional Skyrme-density-functional study of the spontaneous fission of 238U. United States: N. p., 2015.
Web. doi:10.5506/APhysPolB.46.575.
Sadhukhan, J., Mazurek, K., Dobaczewski, J., Nazarewicz, W., Sheikh, J. A., & Baran, A.. Multidimensional Skyrme-density-functional study of the spontaneous fission of 238U. United States. https://doi.org/10.5506/APhysPolB.46.575
Sadhukhan, J., Mazurek, K., Dobaczewski, J., Nazarewicz, W., Sheikh, J. A., and Baran, A.. Thu .
"Multidimensional Skyrme-density-functional study of the spontaneous fission of 238U". United States. https://doi.org/10.5506/APhysPolB.46.575. https://www.osti.gov/servlets/purl/1233541.
@article{osti_1233541,
title = {Multidimensional Skyrme-density-functional study of the spontaneous fission of 238U},
author = {Sadhukhan, J. and Mazurek, K. and Dobaczewski, J. and Nazarewicz, W. and Sheikh, J. A. and Baran, A.},
abstractNote = {Here, we determined the spontaneous fission lifetime of 238U by a minimization of the action integral in a three-dimensional space of collective variables. Apart from the mass-distribution multipole moments Q20 (elongation) and Q30 (left–right asymmetry), we also considered the pairing-fluctuation parameter λ2 as a collective coordinate. The collective potential was obtained self-consistently using the Skyrme energy density functional SkM*. The inertia tensor was obtained within the nonperturbative cranking approximation to the adiabatic time-dependent Hartree–Fock–Bogoliubov approach. The pairing-fluctuation parameter λ2 allowed us to control the pairing gap along the fission path, which significantly changed the spontaneous fission lifetime.},
doi = {10.5506/APhysPolB.46.575},
journal = {Acta Physica Polonica. Series B},
number = 3,
volume = 46,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 2015},
month = {Thu Jan 01 00:00:00 EST 2015}
}
Web of Science