Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP
| Autor: | Matthew Mumpower, Rebecca Surman, M. Vilen, Sami Rinta-Antila, L. Canete, Tommi Eronen, Ari Jokinen, A. de Roubin, Iain Moore, Anu Kankainen, J. O'Brien, Maxime Brodeur, Ani Aprahamian, J. M. Kelly, Mikael Reponen, Heikki Penttilä, Dmitrii Nesterenko, R. P. de Groote, A. Pardo Perdomo |
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| Rok vydání: | 2020 |
| Předmět: |
EFFICIENCY
rare and new isotopes astrofysiikka nuclear astrophysics Nuclear Theory r process FOS: Physical sciences nucl-ex 01 natural sciences 7. Clean energy binding energy and masses Ion PENNING TRAPS 0103 physical sciences Nuclear Physics - Experiment Neutron Nuclide ION Nuclear Experiment (nucl-ex) Nuclear Experiment 010306 general physics DETECTOR Physics Science & Technology STABILITY Isotope 010308 nuclear & particles physics R-PROCESS RAMSEY METHOD Penning trap nuclear structure and decays Atomic mass Neutron capture Physics Nuclear SPECTROMETRY 13. Climate action Pairing Physical Sciences ELECTRON Atomic physics ydinfysiikka DECAY |
| Zdroj: | Physical Review C |
| ISSN: | 2469-9993 2469-9985 |
| DOI: | 10.1103/physrevc.101.034312 |
| Popis: | The JYFLTRAP double Penning trap at the Ion Guide Isotope Separator On-Line (IGISOL) facility has been used to measure the atomic masses of 13 neutron-rich rare-earth isotopes. Eight of the nuclides, $^{161}$Pm, $^{163}$Sm, $^{164,165}$Eu, $^{167}$Gd, and $^{165,167,168}$Tb, were measured for the first time. The systematics of the mass surface has been studied via one- and two-neutron separation energies as well as neutron pairing-gap and shell-gap energies. The proton-neutron pairing strength has also been investigated. The impact of the new mass values on the astrophysical rapid neutron capture process has been studied. The calculated abundance distribution results in a better agreement with the solar abundance pattern near the top of the rare-earth abundance peak at around $A\approx165$. Comment: 15 pages, 17 figures |
| Databáze: | OpenAIRE |
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