Super-short fission mode in fermium isotopes
(2021) In Physical Review C 104(6).- Abstract
The so-called super-short fission mode, in which a nucleus divides nearly symmetrically into two unusually energetic fragments, competes favorably with the standard asymmetric fission mode for spontaneous fission of a limited number of nuclei near Fm264 but it quickly fades away at finite excitations. We investigate the energy-dependent competition between those two fission modes for even fermium isotopes from Fm254 to Fm268, using the Metropolis method to simulate the strongly damped fission dynamics being driven by shape- and energy-dependent level densities. The origin of the super-short mode is discussed and its effects on the fragment mass distribution, the total fragment kinetic energy, and the neutron multiplicity are calculated.... (More)
The so-called super-short fission mode, in which a nucleus divides nearly symmetrically into two unusually energetic fragments, competes favorably with the standard asymmetric fission mode for spontaneous fission of a limited number of nuclei near Fm264 but it quickly fades away at finite excitations. We investigate the energy-dependent competition between those two fission modes for even fermium isotopes from Fm254 to Fm268, using the Metropolis method to simulate the strongly damped fission dynamics being driven by shape- and energy-dependent level densities. The origin of the super-short mode is discussed and its effects on the fragment mass distribution, the total fragment kinetic energy, and the neutron multiplicity are calculated. Generally good agreement with the available data is obtained.
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- author
- Albertsson, M. LU ; Carlsson, B. G. LU ; Døssing, T. LU ; Möller, P. LU ; Randrup, J. LU and Åberg, S. LU
- organization
- publishing date
- 2021-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review C
- volume
- 104
- issue
- 6
- article number
- 064616
- publisher
- American Physical Society
- external identifiers
-
- scopus:85122493341
- ISSN
- 2469-9985
- DOI
- 10.1103/PhysRevC.104.064616
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by "https://www.kb.se/samverkan-och-utveckling/oppen-tillgang-och-bibsamkonsortiet/bibsamkonsortiet.html"Bibsam.
- id
- 6b7f1c21-4d46-4abd-81b1-18f752a1c19e
- date added to LUP
- 2022-02-06 12:47:42
- date last changed
- 2024-07-21 06:49:09
@article{6b7f1c21-4d46-4abd-81b1-18f752a1c19e, abstract = {{<p>The so-called super-short fission mode, in which a nucleus divides nearly symmetrically into two unusually energetic fragments, competes favorably with the standard asymmetric fission mode for spontaneous fission of a limited number of nuclei near Fm264 but it quickly fades away at finite excitations. We investigate the energy-dependent competition between those two fission modes for even fermium isotopes from Fm254 to Fm268, using the Metropolis method to simulate the strongly damped fission dynamics being driven by shape- and energy-dependent level densities. The origin of the super-short mode is discussed and its effects on the fragment mass distribution, the total fragment kinetic energy, and the neutron multiplicity are calculated. Generally good agreement with the available data is obtained. </p>}}, author = {{Albertsson, M. and Carlsson, B. G. and Døssing, T. and Möller, P. and Randrup, J. and Åberg, S.}}, issn = {{2469-9985}}, language = {{eng}}, number = {{6}}, publisher = {{American Physical Society}}, series = {{Physical Review C}}, title = {{Super-short fission mode in fermium isotopes}}, url = {{http://dx.doi.org/10.1103/PhysRevC.104.064616}}, doi = {{10.1103/PhysRevC.104.064616}}, volume = {{104}}, year = {{2021}}, }