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. 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. 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 referenced in this record:
Microscopic description of fission in uranium isotopes with the Gogny energy density functional
journal, May 2014
- Rodríguez-Guzmán, R.; Robledo, L. M.
- Physical Review C, Vol. 89, Issue 5
Microscopic and nonadiabatic Schrödinger equation derived from the generator coordinate method based on zero- and two-quasiparticle states
journal, October 2011
- Bernard, R.; Goutte, H.; Gogny, D.
- Physical Review C, Vol. 84, Issue 4
Microscopic approach of fission dynamics applied to fragment kinetic energy and mass distributions in
journal, February 2005
- Goutte, H.; Berger, J. F.; Casoli, P.
- Physical Review C, Vol. 71, Issue 2
Microscopic description of cluster radioactivity in actinide nuclei
journal, October 2011
- Warda, M.; Robledo, L. M.
- Physical Review C, Vol. 84, Issue 4
Numerical search of discontinuities in self-consistent potential energy surfaces
journal, October 2012
- Dubray, N.; Regnier, D.
- Computer Physics Communications, Vol. 183, Issue 10
Microscopic Phase-Space Exploration Modeling of Spontaneous Fission
journal, April 2017
- Tanimura, Yusuke; Lacroix, Denis; Ayik, Sakir
- Physical Review Letters, Vol. 118, Issue 15
Fission fragment charge and mass distributions in in the adiabatic nuclear energy density functional theory
journal, May 2016
- Regnier, D.; Dubray, N.; Schunck, N.
- Physical Review C, Vol. 93, Issue 5
Analysis of the generator coordinate method in a study of shape isomerism in 194Hg
journal, April 1990
- Bonche, P.; Dobaczewski, J.; Flocard, H.
- Nuclear Physics A, Vol. 510, Issue 3
Microscopic study of induced fission dynamics of with covariant energy density functionals
journal, August 2017
- Tao, H.; Zhao, J.; Li, Z. P.
- Physical Review C, Vol. 96, Issue 2
The shapes of nuclei
journal, January 2017
- Bertsch, G. F.
- International Journal of Modern Physics E, Vol. 26, Issue 01n02
Microscopic theory of nuclear fission: a review
journal, October 2016
- Schunck, N.; Robledo, L. M.
- Reports on Progress in Physics, Vol. 79, Issue 11
Formation and distribution of fragments in the spontaneous fission of
journal, December 2017
- Sadhukhan, Jhilam; Zhang, Chunli; Nazarewicz, Witold
- Physical Review C, Vol. 96, Issue 6
Fission description: First steps towards a full resolution of the time-dependent Hill-Wheeler equation
journal, January 2017
- Verrière, Marc; Dubray, Noël; Schunck, Nicolas
- EPJ Web of Conferences, Vol. 146
Time-dependent quantum collective dynamics applied to nuclear fission
journal, February 1991
- Berger, J. F.; Girod, M.; Gogny, D.
- Computer Physics Communications, Vol. 63, Issue 1-3
Generalized seniority on a deformed single-particle basis
journal, September 2017
- Jia, L. Y.
- Physical Review C, Vol. 96, Issue 3
Shape coexistence and low-lying collective states in A ≈ 100 Zr nuclei
journal, June 1993
- Skalski, J.; Heenen, P. -H.; Bonche, P.
- Nuclear Physics A, Vol. 559, Issue 2
Role of deformed shell effects on the mass asymmetry in nuclear fission of mercury isotopes
journal, December 2012
- Panebianco, Stefano; Sida, Jean-Luc; Goutte, Héloise
- Physical Review C, Vol. 86, Issue 6
Scission-point model of nuclear fission based on deformed-shell effects
journal, November 1976
- Wilkins, B. D.; Steinberg, E. P.; Chasman, R. R.
- Physical Review C, Vol. 14, Issue 5
Heavy-element fission barriers
journal, June 2009
- Möller, Peter; Sierk, Arnold J.; Ichikawa, Takatoshi
- Physical Review C, Vol. 79, Issue 6
Brownian Shape Motion on Five-Dimensional Potential-Energy Surfaces:Nuclear Fission-Fragment Mass Distributions
journal, March 2011
- Randrup, Jørgen; Möller, Peter
- Physical Review Letters, Vol. 106, Issue 13
Microscopic calculation of scission with a finite-range effective force
journal, November 2009
- Younes, W.; Gogny, D.
- Physical Review C, Vol. 80, Issue 5
Nuclear Scission and Quantum Localization
journal, September 2011
- Younes, W.; Gogny, D.
- Physical Review Letters, Vol. 107, Issue 13
Microscopic description of complex nuclear decay: Multimodal fission
journal, July 2009
- Staszczak, A.; Baran, A.; Dobaczewski, J.
- Physical Review C, Vol. 80, Issue 1
On stochastic approaches of nuclear dynamics
journal, October 1996
- Abe, Y.; Ayik, S.; Reinhard, P. -G.
- Physics Reports, Vol. 275, Issue 2-3
The shell model as a unified view of nuclear structure
journal, June 2005
- Caurier, E.; Martínez-Pinedo, G.; Nowacki, F.
- Reviews of Modern Physics, Vol. 77, Issue 2
Fission dynamics of
journal, May 2017
- Zdeb, A.; Dobrowolski, A.; Warda, M.
- Physical Review C, Vol. 95, Issue 5
Analysis of a rotational state in terms of the shell model states
journal, July 1959
- Arima, A.; Yoshida, S.
- Nuclear Physics, Vol. 12, Issue 2
Configuration mixing within the energy density functional formalism: Removing spurious contributions from nondiagonal energy kernels
journal, April 2009
- Lacroix, D.; Duguet, T.; Bender, M.
- Physical Review C, Vol. 79, Issue 4
Remarks on the use of projected densities in the density-dependent part of Skyrme or Gogny functionals
journal, April 2010
- Robledo, L. M.
- Journal of Physics G: Nuclear and Particle Physics, Vol. 37, Issue 6
Nucleon localization and fragment formation in nuclear fission
journal, December 2016
- Zhang, C. L.; Schuetrumpf, B.; Nazarewicz, W.
- Physical Review C, Vol. 94, Issue 6
Self-consistent calculations of fission barriers in the Fm region
journal, July 2002
- Warda, M.; Egido, J. L.; Robledo, L. M.
- Physical Review C, Vol. 66, Issue 1
Fission process of nuclei at low excitation energies with a Langevin approach
journal, October 2013
- Aritomo, Y.; Chiba, S.
- Physical Review C, Vol. 88, Issue 4
Brownian shape motion on five-dimensional potential-energy surfaces: Nuclear fission-fragment mass distributions
text, January 2011
- Randrup, Jorgen; Moller, Peter
- arXiv
Microscopic description of cluster radioactivity in actinide nuclei
text, January 2011
- Warda, M.; Robledo, L. M.
- arXiv
Microscopic description of fission in Uranium isotopes with the Gogny energy density functional
text, January 2013
- Rodriguez-Guzman, R.; Robledo, L. M.
- arXiv
Microscopic Theory of Nuclear Fission: A Review
text, January 2015
- Schunck, N.; Robledo, L. M.
- arXiv
Nucleon localization and fragment formation in nuclear fission
text, January 2016
- Zhang, C. L.; Schuetrumpf, B.; Nazarewicz, W.
- arXiv
Works referencing / citing this record:
Diabatic paths through the scission point in nuclear fission
journal, August 2019
- Bertsch, G. F.; Younes, W.; Robledo, L. M.
- Physical Review C, Vol. 100, Issue 2
Fission dynamics of from saddle to scission and beyond
journal, September 2019
- Bulgac, Aurel; Jin, Shi; Roche, Kenneth J.
- Physical Review C, Vol. 100, Issue 3
Decay widths at the scission point in nuclear fission
journal, October 2019
- Bertsch, G. F.; Robledo, L. M.
- Physical Review C, Vol. 100, Issue 4
Angular momentum of fission fragments
journal, March 2019
- Bertsch, G. F.; Kawano, T.; Robledo, L. M.
- Physical Review C, Vol. 99, Issue 3
Role of dynamic pairing correlations in fission dynamics
journal, June 2019
- Bernard, R.; Giuliani, S. A.; Robledo, L. M.
- Physical Review C, Vol. 99, Issue 6
Angular momentum of fission fragments
journal, June 2001
- Mikhailov, I. N.; Quentin, P.; Briançon, Ch.
- Physics of Atomic Nuclei, Vol. 64, Issue 6
Angular momentum of fission fragments
text, January 2018
- Bertsch, G. F.; Kawano, T.; Robledo, Lm.
- arXiv