Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations

Vilén, 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; Pohjalainen, Ilkka; Porter, W. S.; Rinta-Antila, Sami; Surman, R.; Voss, Annika; Äystö, Juha

doi:10.1103/physrevlett.120.262701

dc.contributor.author	Vilén, Markus
dc.contributor.author	Kelly, J. M.
dc.contributor.author	Kankainen, Anu
dc.contributor.author	Brodeur, M.
dc.contributor.author	Aprahamian, A.
dc.contributor.author	Canete, Laetitia
dc.contributor.author	Eronen, Tommi
dc.contributor.author	Jokinen, Ari
dc.contributor.author	Kuta, T.
dc.contributor.author	Moore, Iain
dc.contributor.author	Mumpower, M. R.
dc.contributor.author	Nesterenko, Dmitrii
dc.contributor.author	Penttilä, Heikki
dc.contributor.author	Pohjalainen, Ilkka
dc.contributor.author	Porter, W. S.
dc.contributor.author	Rinta-Antila, Sami
dc.contributor.author	Surman, R.
dc.contributor.author	Voss, Annika
dc.contributor.author	Äystö, Juha
dc.date.accessioned	2018-07-10T05:43:52Z
dc.date.available	2018-07-10T05:43:52Z
dc.date.issued	2018
dc.identifier.citation	Vilén, M., Kelly, J. M., Kankainen, A., Brodeur, M., Aprahamian, A., Canete, L., Eronen, T., Jokinen, A., Kuta, T., Moore, I., Mumpower, M. R., Nesterenko, D., Penttilä, H., Pohjalainen, I., Porter, W. S., Rinta-Antila, S., Surman, R., Voss, A., & Äystö, J. (2018). Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations. <i>Physical Review Letters</i>, <i>120</i>(26), Article 262701. <a href="https://doi.org/10.1103/physrevlett.120.262701" target="_blank">https://doi.org/10.1103/physrevlett.120.262701</a>
dc.identifier.other	CONVID_28141572
dc.identifier.other	TUTKAID_78137
dc.identifier.uri	https://jyx.jyu.fi/handle/123456789/58887
dc.description.abstract	The 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.mimetype	application/pdf
dc.language	eng
dc.language.iso	eng
dc.publisher	American Physical Society
dc.relation.ispartofseries	Physical Review Letters
dc.rights	In Copyright
dc.subject.other	binding energy and masses
dc.subject.other	nuclear astrophysics
dc.title	Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP : Reduced Neutron Pairing and Implications for r-Process Calculations
dc.type	article
dc.identifier.urn	URN:NBN:fi:jyu-201807033461
dc.contributor.laitos	Fysiikan laitos	fi
dc.contributor.laitos	Department of Physics	en
dc.contributor.oppiaine	Kiihdytinlaboratorio	fi
dc.contributor.oppiaine	Accelerator Laboratory	en
dc.type.uri	http://purl.org/eprint/type/JournalArticle
dc.date.updated	2018-07-03T09:15:11Z
dc.type.coar	http://purl.org/coar/resource_type/c_2df8fbb1
dc.description.reviewstatus	peerReviewed
dc.relation.issn	0031-9007
dc.relation.numberinseries	26
dc.relation.volume	120
dc.type.version	publishedVersion
dc.rights.copyright	© 2018 American Physical Society
dc.rights.accesslevel	openAccess	fi
dc.relation.grantnumber	295207
dc.relation.grantnumber	275389
dc.relation.grantnumber	284516
dc.relation.grantnumber	312544
dc.subject.yso	astrofysiikka
dc.subject.yso	ydinfysiikka
dc.subject.yso	harvinaiset maametallit
dc.format.content	fulltext
jyx.subject.uri	http://www.yso.fi/onto/yso/p20188
jyx.subject.uri	http://www.yso.fi/onto/yso/p14759
jyx.subject.uri	http://www.yso.fi/onto/yso/p15798
dc.rights.url	http://rightsstatements.org/page/InC/1.0/?language=en
dc.relation.doi	10.1103/physrevlett.120.262701
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Suomen Akatemia	fi
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Research Council of Finland	en
dc.relation.funder	Research Council of Finland	en
jyx.fundingprogram	Akatemiatutkija, SA	fi
jyx.fundingprogram	Akatemiatutkija, SA	fi
jyx.fundingprogram	Akatemiatutkijan tutkimuskulut, SA	fi
jyx.fundingprogram	Akatemiatutkijan tutkimuskulut, SA	fi
jyx.fundingprogram	Academy Research Fellow, AoF	en
jyx.fundingprogram	Academy Research Fellow, AoF	en
jyx.fundingprogram	Research costs of Academy Research Fellow, AoF	en
jyx.fundingprogram	Research costs of Academy Research Fellow, AoF	en
jyx.fundinginformation	This 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.
dc.type.okm	A1

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