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dc.contributor.authorVilén, Markus
dc.contributor.authorKelly, J. M.
dc.contributor.authorKankainen, Anu
dc.contributor.authorBrodeur, M.
dc.contributor.authorAprahamian, A.
dc.contributor.authorCanete, Laetitia
dc.contributor.authorEronen, Tommi
dc.contributor.authorJokinen, Ari
dc.contributor.authorKuta, T.
dc.contributor.authorMoore, Iain
dc.contributor.authorMumpower, M. R.
dc.contributor.authorNesterenko, Dmitrii
dc.contributor.authorPenttilä, Heikki
dc.contributor.authorPohjalainen, Ilkka
dc.contributor.authorPorter, W. S.
dc.contributor.authorRinta-Antila, Sami
dc.contributor.authorSurman, R.
dc.contributor.authorVoss, Annika
dc.contributor.authorÄystö, Juha
dc.date.accessioned2018-07-10T05:43:52Z
dc.date.available2018-07-10T05:43:52Z
dc.date.issued2018
dc.identifier.citationVilén, Markus; Kelly, J. M.; Kankainen, Anu; Brodeur, M.; Aprahamian, A.; Canete, Laetitia; Eronen, Tommi; Jokinen, Ari; Kuta, T.; Moore, Iain; Mumpower, M. R.; Nesterenko, Dmitrii; Penttilä, Heikki et al. (2018). Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations. Physical Review Letters, 120 (26), 262701. DOI: 10.1103/physrevlett.120.262701
dc.identifier.otherCONVID_28141572
dc.identifier.otherTUTKAID_78137
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/58887
dc.description.abstractThe rare-earth peak in the r-process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work takes an important step towards elucidating the nuclear structure and reducing the uncertainties in r-process calculations via precise atomic mass measurements at the JYFLTRAP double Penning trap. Nd158, Pm160, Sm162, and Gd164-166 have been measured for the first time, and the precisions for Nd156, Pm158, Eu162,163, Gd163, and Tb164 have been improved considerably. Nuclear structure has been probed via two-neutron separation energies S2n and neutron pairing energy metrics Dn. The data do not support the existence of a subshell closure at N=100. Neutron pairing has been found to be weaker than predicted by theoretical mass models. The impact on the calculated r-process abundances has been studied. Substantial changes resulting in a smoother abundance distribution and a better agreement with the solar r-process abundances are observed.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Letters
dc.rightsIn Copyright
dc.subject.otherbinding energy and masses
dc.subject.othernuclear astrophysics
dc.titlePrecision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201807033461
dc.contributor.laitosFysiikan laitosfi
dc.contributor.laitosDepartment of Physicsen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2018-07-03T09:15:11Z
dc.description.reviewstatuspeerReviewed
dc.relation.issn0031-9007
dc.relation.numberinseries26
dc.relation.volume120
dc.type.versionpublishedVersion
dc.rights.copyright© 2018 American Physical Society
dc.rights.accesslevelopenAccessfi
dc.relation.grantnumber312544
dc.relation.grantnumber275389
dc.relation.grantnumber295207
dc.relation.grantnumber284516
dc.subject.ysoastrofysiikka
dc.subject.ysoydinfysiikka
dc.subject.ysoharvinaiset maametallit
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p20188
jyx.subject.urihttp://www.yso.fi/onto/yso/p14759
jyx.subject.urihttp://www.yso.fi/onto/yso/p15798
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1103/physrevlett.120.262701
dc.relation.funderSuomen Akatemiafi
dc.relation.funderSuomen Akatemiafi
dc.relation.funderSuomen Akatemiafi
dc.relation.funderSuomen Akatemiafi
dc.relation.funderAcademy of Finlanden
dc.relation.funderAcademy of Finlanden
dc.relation.funderAcademy of Finlanden
dc.relation.funderAcademy of Finlanden
jyx.fundingprogramAkatemiatutkijan tutkimuskulut, SAfi
jyx.fundingprogramAkatemiatutkijan tehtävä, SAfi
jyx.fundingprogramAkatemiatutkijan tehtävä, SAfi
jyx.fundingprogramAkatemiatutkijan tutkimuskulut, SAfi
jyx.fundingprogramResearch costs of Academy Research Fellow, AoFen
jyx.fundingprogramResearch post as Academy Research Fellow, AoFen
jyx.fundingprogramResearch post as Academy Research Fellow, AoFen
jyx.fundingprogramResearch costs of Academy Research Fellow, AoFen
jyx.fundinginformationThis work has been supported by the Academy of Finland under the Finnish Centre of Excellence Program (Nuclear and Accelerator Based Physics Research at JYFL) and by the National Science Foundation (NSF) Grants No. PHY-1419765 and No. PHY-1713857. A. K., D. A. N., and L. C. acknowledge the support from the Academy of Finland under Projects No. 275389, No. 284516, and No. 312544, and T. E. under Project No. 295207. M. R. M. carried out this work under the auspices of the National Nuclear Security Administration of the U.S. Department of Energy at Los Alamos National Laboratory under Contract No. DE-AC52-06NA25396. R. S.’s work is funded in part by the DOE Office of Science under Contract No. DE-SC0013039.


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