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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.issued2018fi
dc.identifier.citationVilén, M., Kelly, J. M., Kankainen, A., Brodeur, M., Aprahamian, A., Canete, L., . . . Äystö, J. (2018). Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations. <em>Physical Review Letters</em>, 120 (26), 262701. <a href="https://doi.org/10.1103/physrevlett.120.262701">doi:10.1103/physrevlett.120.262701</a>fi
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. 158Nd, 160Pm, 162Sm, and 164–166Gd have been measured for the first time, and the precisions for 156Nd, 158Pm, 162;163Eu, 163Gd, and 164Tb 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 ¼ 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.fi
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.publisherAmerican Physical Society
dc.relation.ispartofseriesPhysical Review Letters
dc.rightsIn Copyright
dc.subject.otherbinding energy and massesfi
dc.subject.othernuclear astrophysicsfi
dc.titlePrecision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculationsfi
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.format.contentfulltext
dc.rights.urlhttp://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi10.1103/physrevlett.120.262701


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