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Article: Pairing Forces Govern Population of Doubly Magic 54Ca from Direct Reactions

TitlePairing Forces Govern Population of Doubly Magic 54Ca from Direct Reactions
Authors
Issue Date2021
PublisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/
Citation
Physical Review Letters, 2021, v. 126 n. 25, p. article no. 252501 How to Cite?
AbstractDirect proton-knockout reactions of Sc55 at ∼220 MeV/nucleon were studied at the RIKEN Radioactive Isotope Beam Factory. Populated states of Ca54 were investigated through γ-ray and invariant-mass spectroscopy. Level energies were calculated from the nuclear shell model employing a phenomenological internucleon interaction. Theoretical cross sections to states were calculated from distorted-wave impulse approximation estimates multiplied by the shell model spectroscopic factors, which describe the wave function overlap of the Sc55 ground state with states in Ca54. Despite the calculations showing a significant amplitude of excited neutron configurations in the ground-state of Sc55, valence proton removals populated predominantly the ground state of Ca54. This counterintuitive result is attributed to pairing effects leading to a dominance of the ground-state spectroscopic factor. Owing to the ubiquity of the pairing interaction, this argument should be generally applicable to direct knockout reactions from odd-even to even-even nuclei. © 2021 American Physical Society.
Persistent Identifierhttp://hdl.handle.net/10722/301178
ISSN
2020 Impact Factor: 9.161
2015 SCImago Journal Rankings: 3.731

 

DC FieldValueLanguage
dc.contributor.authorBrowne, F-
dc.contributor.authorChen, S-
dc.contributor.authorDoornenbal, P-
dc.contributor.authorObertelli, A-
dc.contributor.authorOgata, K-
dc.contributor.authorUtsuno, Y-
dc.contributor.authorYoshida, K-
dc.contributor.authorAchouri, NL-
dc.contributor.authorBaba, H-
dc.contributor.authorCalvet, D-
dc.contributor.authorChâteau, F-
dc.contributor.authorChiga, N-
dc.contributor.authorCorsi, A-
dc.contributor.authorCortés, ML-
dc.contributor.authorDelbart, A-
dc.contributor.authorGheller, JM-
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.authorRodriguez, W-
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.authorBoretzky, K-
dc.contributor.authorCaesar, C-
dc.contributor.authorChung, LX-
dc.contributor.authorFlavigny, F-
dc.contributor.authorFranchoo, S-
dc.contributor.authorGasparic, I-
dc.contributor.authorGerst, RB-
dc.contributor.authorGibelin, J-
dc.contributor.authorHahn, KI-
dc.contributor.authorHoll, M-
dc.contributor.authorKahlbow, J-
dc.contributor.authorKim, D-
dc.contributor.authorKörper, D-
dc.contributor.authorKoiwai, D-
dc.contributor.authorKondo, Y-
dc.contributor.authorKoseoglou, P-
dc.contributor.authorLee, HCJ-
dc.contributor.authorLehr, C-
dc.contributor.authorLinh, BD-
dc.contributor.authorLokotko, T-
dc.contributor.authorMacCormick, M-
dc.contributor.authorMiki, K-
dc.contributor.authorMoschner, K-
dc.contributor.authorNakamura, T-
dc.contributor.authorPark, SY-
dc.contributor.authorRossi, D-
dc.contributor.authorSahin, E-
dc.contributor.authorSchindler, F-
dc.contributor.authorSimon, H-
dc.contributor.authorSöderström, PA-
dc.contributor.authorSohler, D-
dc.contributor.authorTakeuchi, S-
dc.contributor.authorTörnqvist, H-
dc.contributor.authorTscheuschner, J-
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.accessioned2021-07-27T08:07:17Z-
dc.date.available2021-07-27T08:07:17Z-
dc.date.issued2021-
dc.identifier.citationPhysical Review Letters, 2021, v. 126 n. 25, p. article no. 252501-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/301178-
dc.description.abstractDirect proton-knockout reactions of Sc55 at ∼220 MeV/nucleon were studied at the RIKEN Radioactive Isotope Beam Factory. Populated states of Ca54 were investigated through γ-ray and invariant-mass spectroscopy. Level energies were calculated from the nuclear shell model employing a phenomenological internucleon interaction. Theoretical cross sections to states were calculated from distorted-wave impulse approximation estimates multiplied by the shell model spectroscopic factors, which describe the wave function overlap of the Sc55 ground state with states in Ca54. Despite the calculations showing a significant amplitude of excited neutron configurations in the ground-state of Sc55, valence proton removals populated predominantly the ground state of Ca54. This counterintuitive result is attributed to pairing effects leading to a dominance of the ground-state spectroscopic factor. Owing to the ubiquity of the pairing interaction, this argument should be generally applicable to direct knockout reactions from odd-even to even-even nuclei. © 2021 American Physical Society.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at https://journals.aps.org/prl/-
dc.relation.ispartofPhysical Review Letters-
dc.rightsCopyright [2021] by The American Physical Society. This article is available online at [http://dx.doi.org/10.1103/PhysRevLett.126.252501].-
dc.titlePairing Forces Govern Population of Doubly Magic 54Ca from Direct Reactions-
dc.typeArticle-
dc.identifier.emailLee, HCJ: jleehc@hku.hk-
dc.identifier.authorityLee, HCJ=rp01902-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1103/PhysRevLett.126.252501-
dc.identifier.scopuseid_2-s2.0-85108908223-
dc.identifier.hkuros323797-
dc.identifier.volume126-
dc.identifier.issue25-
dc.identifier.spagearticle no. 252501-
dc.identifier.epagearticle no. 252501-
dc.publisher.placeUnited States-

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