Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP
Vilen, M., Kelly, J. M., Kankainen, A., Brodeur, M., Aprahamian, A., Canete, L., de Groote, R. P., de Roubin, A., Eronen, T., Jokinen, A., Moore, I. D., Mumpower, M. R., Nesterenko, D. A., O'Brien, J., Perdomo, A. P., Penttilä, H., Reponen, M., Rinta-Antila, S., & Surman, R. (2020). Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP. Physical Review C, 101(3), Article 034312. https://doi.org/10.1103/PhysRevC.101.034312
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Physical Review CDate
2020Copyright
© 2020 American Physical Society
The JYFLTRAP double Penning trap at the Ion Guide Isotope Separator On-Line facility has been used to
measure the atomic masses of 13 neutron-rich rare-earth isotopes. Eight of the nuclides, 161Pm, 163Sm, 164,165Eu, 167Gd, and 165,167,168Tb, 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 protonneutron 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 ≈ 165.
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American Physical SocietyISSN Search the Publication Forum
2469-9985Keywords
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https://converis.jyu.fi/converis/portal/detail/Publication/35107704
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Related funder(s)
Research Council of Finland; European CommissionFunding program(s)
Academy Research Fellow, AoF; ERC Consolidator Grant
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about funding
This work has been supported by the Academy of Finland under the Finnish Centre of Excellence Programme 2012– 2017 (Nuclear and Accelerator Based Physics Research at JYFL) and by the National Science Foundation (NSF) Grants No. PHY-1713857. A.K., D.N., L.C., and T.E. acknowledge support from the Academy of Finland under Projects No. 275389 and No. 295207. M.M. carried out this work under the ausp ...
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