Precision mass measurements of neutron-rich neodymium and samarium isotopes and their role in understanding rare-earth peak formation
Journal Article
·
· Physical Review Letters
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Notre Dame, IN (United States)
- McGill Univ., Montreal, QC (Canada)
- Univ. of Manitoba, Winnepeg, MB (Canada)
The Canadian Penning Trap mass spectrometer at the Californium Rare Isotope Breeder Upgrade (CARIBU) facility was used to measure the masses of eight neutron-rich isotopes of Nd and Sm. These measurements are the first to push into the region of nuclear masses relevant to the formation of the rare-earth abundance peak at A ~ 165 by the rapid neutron-capture process. We compare our results with theoretical predictions obtained from “reverse engineering” the mass surface that best reproduces the observed solar abundances in this region through a Markov chain Monte Carlo technique. Our measured masses are consistent with the reverse-engineering predictions for a neutron star merger wind scenario.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC). Nuclear Physics (NP) (SC-26); USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- 89233218CNA000001; AC02-06CH11357; PHY-1419765; AC52-07NA27344; SC0013039; FG02-02ER41216; AC52-06NA25396
- OSTI ID:
- 1726163
- Alternate ID(s):
- OSTI ID: 1457816
- Report Number(s):
- LA-UR-18-22871; 1079-7114 (Electronic); TRN: US2205160
- Journal Information:
- Physical Review Letters, Vol. 120, Issue 26; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 45 works
Citation information provided by
Web of Science
Web of Science
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