Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first -process abundance peak in neutron-star merger calculations
Abstract
We report mass measurements of neutron-rich Ga isotopes 80–85Ga with TRIUMF's Ion Trap for Atomic and Nuclear science. The measurements determine the masses of 80–83Ga in good agreement with previous measurements. Here, the masses of 84Ga and 85Ga were measured for the first time. Uncertainties between 25 and 48 keV were reached. The new mass values reduce the nuclear uncertainties associated with the production of A ≈ 84 isotopes by the r-process for astrophysical conditions that might be consistent with a binary neutron star (BNS) merger producing a blue kilonova. Our nucleosynthesis simulations confirm that BNS merger may contribute to the first abundance peak under moderate neutron-rich conditions with electron fractions Ye = 0.35–0.38.
- Authors:
-
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- Justus-Liebig-Univ., GieBen (Germany); TRIUMF, Vancouver, BC (Canada); Univ. of Edinburgh (United Kingdom)
- Justus-Liebig-Univ., GieBen (Germany); GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany)
- GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States); JINA-CEE, East Lansing, MI (United States)
- Simon Fraser Univ., Burnaby, BC (Canada)
- TRIUMF, Vancouver, BC (Canada)
- TRIUMF, Vancouver, BC (Canada); Ruprecht-Karls-Univ., Heidelberg (Germany)
- TRIUMF, Vancouver, BC (Canada); McGill Univ., Montreal, QC (Canada)
- TRIUMF, Vancouver, BC (Canada); Univ. of British Columbia, Vancouver, BC (Canada)
- TRIUMF, Vancouver, BC (Canada); Univ. of Victoria, BC (Canada)
- TRIUMF, Vancouver, BC (Canada); Univ. of York (United Kingdom)
- Univ. of Manitoba, Winnipeg, MB (Canada)
- Justus-Liebig-Univ., GieBen (Germany)
- TRIUMF, Vancouver, BC (Canada); Max-Planck-Institut für Kernphysik Heidelberg (Germany)
- TRIUMF, Vancouver, BC (Canada); Univ. of Manitoba, Winnipeg, MB (Canada)
- TRIUMF, Vancouver, BC (Canada); Northwestern Univ., Evanston, IL (United States)
- Colorado School of Mines, Golden, CO (United States)
- TRIUMF, Vancouver, BC (Canada); Ruprecht-Karls-Univ. Heidelberg (Germany)
- Michigan State Univ., East Lansing, MI (United States)
- JINA-CEE, East Lansing, MI (United States)
- GSI-Helmholtzzentrum fur Schwerionenforschung, Darmstadt (Germany); Technische Univ. Darmstadt (Germany); Univ. of Minnesota, Minneapolis, MN (United States)
- TRIUMF, Vancouver, BC (Canada); Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Univ. of Calgary, AB (Canada)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE; National Science Foundation (NSF); Canadian-UK Foundation; German Inst. DFG; German Federal Ministry of Education and Research (BMBF); Helmholtz Association through NAVI
- OSTI Identifier:
- 1603982
- Report Number(s):
- LA-UR-18-28439
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US2104169
- Grant/Contract Number:
- AC52-06NA25396; 89233218CNA000001; PHY-1419765; PHY-1614130; SC0017649; ST/L005816/1; ST/L005743/1; FR 601/3-1; SFB 1245; 05P15RGFN1; 05P12RGFN8; VH-VI-417
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 101; Journal Issue: 2; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Binding energy & masses; Nuclear astrophysics; Nucleosynthesis in explosive environments; r process; 59 ≤ A ≤ 89; Spectrometers & spectroscopic techniques
Citation Formats
Reiter, M. P., Ayet San Andrés, S., Nikas, S., Lippuner, J., Andreoiu, C., Babcock, C., Barquest, B. R., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Gwinner, G., Graham, L., Hornung, C., Klawitter, R., Kootte, B., Kwiatkowski, A. A., Lan, Y., Lascar, D., Leach, K. G., Leistenschneider, E., Martínez-Pinedo, G., McKay, J. E., Paul, S. F., Plaß, W. R., Roberts, L., Schatz, H., Scheidenberger, C., Sieverding, A., Steinbrügge, R., Thompson, R., Wieser, M. E., Will, C., and Welch, D. Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations. United States: N. p., 2020.
Web. doi:10.1103/PhysRevC.101.025803.
Reiter, M. P., Ayet San Andrés, S., Nikas, S., Lippuner, J., Andreoiu, C., Babcock, C., Barquest, B. R., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Gwinner, G., Graham, L., Hornung, C., Klawitter, R., Kootte, B., Kwiatkowski, A. A., Lan, Y., Lascar, D., Leach, K. G., Leistenschneider, E., Martínez-Pinedo, G., McKay, J. E., Paul, S. F., Plaß, W. R., Roberts, L., Schatz, H., Scheidenberger, C., Sieverding, A., Steinbrügge, R., Thompson, R., Wieser, M. E., Will, C., & Welch, D. Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations. United States. https://doi.org/10.1103/PhysRevC.101.025803
Reiter, M. P., Ayet San Andrés, S., Nikas, S., Lippuner, J., Andreoiu, C., Babcock, C., Barquest, B. R., Bollig, J., Brunner, T., Dickel, T., Dilling, J., Dillmann, I., Dunling, E., Gwinner, G., Graham, L., Hornung, C., Klawitter, R., Kootte, B., Kwiatkowski, A. A., Lan, Y., Lascar, D., Leach, K. G., Leistenschneider, E., Martínez-Pinedo, G., McKay, J. E., Paul, S. F., Plaß, W. R., Roberts, L., Schatz, H., Scheidenberger, C., Sieverding, A., Steinbrügge, R., Thompson, R., Wieser, M. E., Will, C., and Welch, D. Mon .
"Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations". United States. https://doi.org/10.1103/PhysRevC.101.025803. https://www.osti.gov/servlets/purl/1603982.
@article{osti_1603982,
title = {Mass measurements of neutron-rich gallium isotopes refine production of nuclei of the first r-process abundance peak in neutron-star merger calculations},
author = {Reiter, M. P. and Ayet San Andrés, S. and Nikas, S. and Lippuner, J. and Andreoiu, C. and Babcock, C. and Barquest, B. R. and Bollig, J. and Brunner, T. and Dickel, T. and Dilling, J. and Dillmann, I. and Dunling, E. and Gwinner, G. and Graham, L. and Hornung, C. and Klawitter, R. and Kootte, B. and Kwiatkowski, A. A. and Lan, Y. and Lascar, D. and Leach, K. G. and Leistenschneider, E. and Martínez-Pinedo, G. and McKay, J. E. and Paul, S. F. and Plaß, W. R. and Roberts, L. and Schatz, H. and Scheidenberger, C. and Sieverding, A. and Steinbrügge, R. and Thompson, R. and Wieser, M. E. and Will, C. and Welch, D.},
abstractNote = {We report mass measurements of neutron-rich Ga isotopes 80–85Ga with TRIUMF's Ion Trap for Atomic and Nuclear science. The measurements determine the masses of 80–83Ga in good agreement with previous measurements. Here, the masses of 84Ga and 85Ga were measured for the first time. Uncertainties between 25 and 48 keV were reached. The new mass values reduce the nuclear uncertainties associated with the production of A ≈ 84 isotopes by the r-process for astrophysical conditions that might be consistent with a binary neutron star (BNS) merger producing a blue kilonova. Our nucleosynthesis simulations confirm that BNS merger may contribute to the first abundance peak under moderate neutron-rich conditions with electron fractions Ye = 0.35–0.38.},
doi = {10.1103/PhysRevC.101.025803},
journal = {Physical Review C},
number = 2,
volume = 101,
place = {United States},
year = {Mon Feb 10 00:00:00 EST 2020},
month = {Mon Feb 10 00:00:00 EST 2020}
}
Web of Science
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