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Article: Shell evolution of N = 40 isotones towards 60Ca: First spectroscopy of 62Ti

TitleShell evolution of N = 40 isotones towards 60Ca: First spectroscopy of 62Ti
Authors
KeywordsGamma-ray spectroscopy
Radioactive beams
Shell evolution
Issue Date2020
PublisherElsevier: SCOAP3. The Journal's web site is located at http://www.elsevier.com/locate/physletb
Citation
Physics Letters B, 2020, v. 800, p. article no. 135071 How to Cite?
AbstractExcited states in the N=40 isotone 62Ti were populated via the 63V(p,2p)62Ti reaction at ∼200 MeV/nucleon at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. The energies of the 21 +→0gs + and 41 +→21 + transitions, observed here for the first time, indicate a deformed 62Ti ground state. These energies are increased compared to the neighboring 64Cr and 66Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for 62Ti show a dominant configuration with four neutrons excited across the N=40 gap. Likewise, they indicate that the N=40 island of inversion extends down to Z=20, disfavoring a possible doubly magic character of the elusive 60Ca. © 2019 The Authors
Persistent Identifierhttp://hdl.handle.net/10722/280382
ISSN
2017 Impact Factor: 4.254
2015 SCImago Journal Rankings: 3.186

 

DC FieldValueLanguage
dc.contributor.authorCortés, ML-
dc.contributor.authorRodriguez, W-
dc.contributor.authorDoornenbal, P-
dc.contributor.authorObertelli, A-
dc.contributor.authorHolt, JD-
dc.contributor.authorLenzi, SM-
dc.contributor.authorMenéndez, J-
dc.contributor.authorNowacki, F-
dc.contributor.authorOgata, K-
dc.contributor.authorPoves, A-
dc.contributor.authorRodríguez, TR-
dc.contributor.authorSchwenk, A-
dc.contributor.authorSimonis, J-
dc.contributor.authorStroberg, SR-
dc.contributor.authorYoshida, K-
dc.contributor.authorAchouri, L-
dc.contributor.authorBaba, H-
dc.contributor.authorBrowne, F-
dc.contributor.authorCalvet, D-
dc.contributor.authorChâteau, F-
dc.contributor.authorChen, S-
dc.contributor.authorChiga, N-
dc.contributor.authorCorsi, A-
dc.contributor.authorDelbart, A-
dc.contributor.authorGheller, J-M-
dc.contributor.authorGiganon, A-
dc.contributor.authorGillibert, A-
dc.contributor.authorHilaire, C-
dc.contributor.authorIsobe, T-
dc.contributor.authorKobayashi, T-
dc.contributor.authorKubota, Y-
dc.contributor.authorLapoux, V-
dc.contributor.authorLiu, HN-
dc.contributor.authorMotobayashi, T-
dc.contributor.authorMurray, I-
dc.contributor.authorOtsu, H-
dc.contributor.authorPanin, V-
dc.contributor.authorPaul, N-
dc.contributor.authorSakurai, H-
dc.contributor.authorSasano, M-
dc.contributor.authorSteppenbeck, D-
dc.contributor.authorStuhl, L-
dc.contributor.authorSun, YL-
dc.contributor.authorTogano, Y-
dc.contributor.authorUesaka, T-
dc.contributor.authorWimmer, K-
dc.contributor.authorYoneda, K-
dc.contributor.authorAktas, O-
dc.contributor.authorAumann, T-
dc.contributor.authorChung, LX-
dc.contributor.authorFlavigny, F-
dc.contributor.authorFranchoo, S-
dc.contributor.authorGašparić, I-
dc.contributor.authorGerst, R-B-
dc.contributor.authorGibelin, J-
dc.contributor.authorHahn, KI-
dc.contributor.authorKim, D-
dc.contributor.authorKoiwai, T-
dc.contributor.authorKoiwai, Y-
dc.contributor.authorKoseoglou, P-
dc.contributor.authorLee, J-
dc.contributor.authorLehr, C-
dc.contributor.authorLinh, BD-
dc.contributor.authorLokotko, T-
dc.contributor.authorMacCormick, M-
dc.contributor.authorMoschner, K-
dc.contributor.authorNakamura, T-
dc.contributor.authorPark, SY-
dc.contributor.authorRossi, D-
dc.contributor.authorSahin, E-
dc.contributor.authorSohler, D-
dc.contributor.authorSöderström, P-A-
dc.contributor.authorTakeuchi, S-
dc.contributor.authorToernqvist, H-
dc.contributor.authorVaquero, V-
dc.contributor.authorWagner, V-
dc.contributor.authorWang, S-
dc.contributor.authorWerner, V-
dc.contributor.authorXu, X-
dc.contributor.authorYamada, H-
dc.contributor.authorYan, D-
dc.contributor.authorYang, Z-
dc.contributor.authorYasuda, M-
dc.contributor.authorZanetti, L-
dc.date.accessioned2020-02-07T07:40:14Z-
dc.date.available2020-02-07T07:40:14Z-
dc.date.issued2020-
dc.identifier.citationPhysics Letters B, 2020, v. 800, p. article no. 135071-
dc.identifier.issn0370-2693-
dc.identifier.urihttp://hdl.handle.net/10722/280382-
dc.description.abstractExcited states in the N=40 isotone 62Ti were populated via the 63V(p,2p)62Ti reaction at ∼200 MeV/nucleon at the Radioactive Isotope Beam Factory and studied using γ-ray spectroscopy. The energies of the 21 +→0gs + and 41 +→21 + transitions, observed here for the first time, indicate a deformed 62Ti ground state. These energies are increased compared to the neighboring 64Cr and 66Fe isotones, suggesting a small decrease of quadrupole collectivity. The present measurement is well reproduced by large-scale shell-model calculations based on effective interactions, while ab initio and beyond mean-field calculations do not yet reproduce our findings. The shell-model calculations for 62Ti show a dominant configuration with four neutrons excited across the N=40 gap. Likewise, they indicate that the N=40 island of inversion extends down to Z=20, disfavoring a possible doubly magic character of the elusive 60Ca. © 2019 The Authors-
dc.languageeng-
dc.publisherElsevier: SCOAP3. The Journal's web site is located at http://www.elsevier.com/locate/physletb-
dc.relation.ispartofPhysics Letters B-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectGamma-ray spectroscopy-
dc.subjectRadioactive beams-
dc.subjectShell evolution-
dc.titleShell evolution of N = 40 isotones towards 60Ca: First spectroscopy of 62Ti-
dc.typeArticle-
dc.identifier.emailLee, J: jleehc@hku.hk-
dc.identifier.authorityLee, J=rp01902-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1016/j.physletb.2019.135071-
dc.identifier.scopuseid_2-s2.0-85074726928-
dc.identifier.hkuros309060-
dc.identifier.volume800-
dc.identifier.spagearticle no. 135071-
dc.identifier.epagearticle no. 135071-
dc.publisher.placeNetherlands-

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