prikaz prve stranice dokumenta Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations
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Scientific paper - Original scientific paper
Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations
Physical Review C, 105 (2022), 5; 055801. https://doi.org/10.1103/PhysRevC.105.055801
Giraud, S.; Zegers, R. G. T.; Brown, B. A.; Gabler, J.-M.; Lesniak, J.; Rebenstock, J.; Ney, E. M.; Engel, J.; Ravlić, Ante; Paar, Nils

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Giraud, S., Zegers, R. G. T., Brown, B. A., Gabler, J. M., Lesniak, J., Rebenstock, J. ... Paar, N. (2022). Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations. Physical Review C, 105. (5). doi: 10.1103/PhysRevC.105.055801

Giraud, S., et al. "Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations." Physical Review C, vol. 105, no. 5, 2022. https://doi.org/10.1103/PhysRevC.105.055801

Giraud, S., R. G. T. Zegers, B. A. Brown, J. M. Gabler, J. Lesniak, J. Rebenstock, E. M. Ney, J. Engel, Ante Ravlić and Nils Paar. "Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations." Physical Review C 105, no. 5 (2022). https://doi.org/10.1103/PhysRevC.105.055801

Giraud, S., et al. (2022) 'Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations', Physical Review C, 105(5). doi: 10.1103/PhysRevC.105.055801

Giraud S, Zegers RGT, Brown BA, Gabler JM, Lesniak J, Rebenstock J, and sur.. Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations. Physical Review C [Internet]. 2022 [cited 2024 November 09];105(5). doi: 10.1103/PhysRevC.105.055801

S. Giraud, et al., "Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations", Physical Review C, vol. 105, no. 5, 2022. [Online]. Available at: https://urn.nsk.hr/urn:nbn:hr:217:756684. [Accessed: 09 November 2024]

Metadata
Title (english)Finite-temperature electron-capture rates for neutron-rich nuclei near N=50 and effects on core-collapse supernova simulations
AuthorS. Giraud
AuthorR. G. T. Zegers
AuthorB. A. Brown
AuthorJ.-M. Gabler
AuthorJ. Lesniak
AuthorJ. Rebenstock
AuthorE. M. Ney
AuthorJ. Engel
AuthorAnte Ravlić
AuthorNils Paar
Author's institutionUniversity of Zagreb
Faculty of Science
(Department of Physics)
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract (english)
The temperature dependence of stellar electron- capture (EC) rates is investigated, with a focus on nuclei near N = 50, just above Z = 28, which play an important role during the collapse phase of core- collapse supernovae (CCSN). Two new microscopic calculations of stellar EC rates are obtained from relativistic and nonrelativistic finite-temperature quasiparticle random-phase approximation approaches, for a conventional grid of temperatures and densities. In both approaches, EC rates due to Gamow-Teller transitions are included. In the relativistic calculation, contributions from first-forbidden transitions are also included and add strongly to the EC rates. The new EC rates are compared with large-scale shell-model calculations for the specific case of 86Kr, providing insight into the finite- temperature effects on the EC rates. At relevant thermodynamic conditions for core collapse, the discrepancies between the different calculations of this paper are within about one order of magnitude. Numerical simulations of CCSN are performed with the spherically symmetric GR1D simulation code to quantify the impact of such differences on the dynamics of the collapse. These simulations also include EC rates based on two parametrized approximations. A comparison of the neutrino luminosities and enclosed mass at core bounce shows that differences between simulations with different sets of EC rates are relatively small (≈5%), suggesting that the EC rates used as inputs for these simulations have become well constrained.
Keywords (english)
Languageenglish
Publication typeScientific paper - Original scientific paper
Publication statusPublished
Peer reviewPeer review - international
Publication versionPublished version
Journal titlePhysical Review C
Numberingvol. 105, no. 5, 055801
p-ISSN2469-9985
e-ISSN2469-9993
DOIhttps://doi.org/10.1103/PhysRevC.105.055801
URN:NBNurn:nbn:hr:217:756684
Publication2022
ProjectNumber: KK.01.1.1.01.0004
Title (english): QuantiXLie Center of Excellence
Acronym: QuantiXLie
Leader: Hrvoje Buljan, Pavle Pandžić
Jurisdiction: eu
Funding stream: European Regional Development Fund - the Competitiveness and Cohesion Operational Programme
Document URLhttps://link.aps.org/doi/10.1103/PhysRevC.105.055801
Type of resourceText
Access conditionsOpen access
Terms of useLicence In copyright icon
Public note© 2022 American Physical Society. Received 2 December 2021; Accepted 22 February 2022; Published 4 May 2022.
Created on2023-09-07 19:22:35