Impact of nuclear mass uncertainties on the process
Abstract
Here, nuclear masses play a fundamental role in understanding how the heaviest elements in the Universe are created in the process. We predict -process nucleosynthesis yields using neutron capture and photodissociation rates that are based on the nuclear density functional theory. Using six Skyrme energy density functionals based on different optimization protocols, we determine for the first time systematic uncertainty bands—related to mass modeling—for -process abundances in realistic astrophysical scenarios. We find that features of the underlying microphysics make an imprint on abundances especially in the vicinity of neutron shell closures: Abundance peaks and troughs are reflected in trends of neutron separation energy. Further advances in the nuclear theory and experiments, when linked to observations, will help in the understanding of astrophysical conditions in extreme -process sites.
- Authors:
-
- Technische Univ. Darmstadt, Darmstadt (Germany); GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)
- Michigan State Univ., East Lansing, MI (United States); Univ. of Warsaw, Warsaw (Poland)
- Michigan State Univ., East Lansing, MI (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Michigan State Univ., East Lansing, MI (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1332819
- Alternate Identifier(s):
- OSTI ID: 1244136
- Grant/Contract Number:
- NA0002847; SC0013365
- 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
Martin, Dirk, Arcones, Almudena, Nazarewicz, Witold, and Olsen, E. Impact of nuclear mass uncertainties on the r process. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.121101.
Martin, Dirk, Arcones, Almudena, Nazarewicz, Witold, & Olsen, E. Impact of nuclear mass uncertainties on the r process. United States. https://doi.org/10.1103/PhysRevLett.116.121101
Martin, Dirk, Arcones, Almudena, Nazarewicz, Witold, and Olsen, E. Fri .
"Impact of nuclear mass uncertainties on the r process". United States. https://doi.org/10.1103/PhysRevLett.116.121101. https://www.osti.gov/servlets/purl/1332819.
@article{osti_1332819,
title = {Impact of nuclear mass uncertainties on the r process},
author = {Martin, Dirk and Arcones, Almudena and Nazarewicz, Witold and Olsen, E.},
abstractNote = {Here, nuclear masses play a fundamental role in understanding how the heaviest elements in the Universe are created in the r process. We predict r-process nucleosynthesis yields using neutron capture and photodissociation rates that are based on the nuclear density functional theory. Using six Skyrme energy density functionals based on different optimization protocols, we determine for the first time systematic uncertainty bands—related to mass modeling—for r-process abundances in realistic astrophysical scenarios. We find that features of the underlying microphysics make an imprint on abundances especially in the vicinity of neutron shell closures: Abundance peaks and troughs are reflected in trends of neutron separation energy. Further advances in the nuclear theory and experiments, when linked to observations, will help in the understanding of astrophysical conditions in extreme r-process sites.},
doi = {10.1103/PhysRevLett.116.121101},
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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