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Restoration of the natural E(1/2(1)(+)) - E(3/2(1)(+)) energy splitting in odd -K isotopes towards N=40

Title
Restoration of the natural E(1/2(1)(+)) - E(3/2(1)(+)) energy splitting in odd -K isotopes towards N=40
Authors
Sun, Y. L.Obertelli, A.Doornenbal, P.Barbieri, C.Chazono, Y.Duguet, T.Liu, H. N.Navratil, P.Nowacki, F.Ogata, K.Otsuka, T.Raimondi, F.Soma, V.Utsuno, Y.Yoshida, K.Achouri, N.Baba, H.Browne, F.Calvet, D.Chateau, F.Chen, S.Chiga, N.Corsi, A.Cortes, M. L.Delbart, A.Gheller, J. -M.Giganon, A.Gillibert, A.Hilaire, C.Isobe, T.Kobayashi, T.Kubota, Y.Lapoux, V.Motobayashi, T.Murray, I.Otsu, H.Panin, V.Paul, N.Rodriguez, W.Sakurai, H.Sasano, M.Steppenbeck, D.Stuhl, L.Togano, Y.Uesaka, T.Wimmer, K.Yoneda, K.Aktas, O.Aumann, T.Chung, L. X.Flavigny, F.Franchoo, S.Gasparic, I.Gerst, R. -B.Gibelin, J.Hahn, K. I.Kim, D.Koiwai, T.Kondo, Y.Koseoglou, P.Lee, J.Lehr, C.Linh, B. D.Lokotko, T.MacCormick, M.Moschner, K.Nakamura, T.Park, S. Y.Rossi, D.Sahin, E.Sohler, D.Soederstroem, P. -A.Takeuchi, S.Toernqvist, H.Vaquero, V.Wagner, V.Wang, S.Werner, V.Xu, X.Yamada, H.Yan, D.Yang, Z.Yasuda, M.Zanetti, L.
Ewha Authors
한인식
SCOPUS Author ID
한인식scopusscopusscopus
Issue Date
2020
Journal Title
PHYSICS LETTERS B
ISSN
0370-2693JCR Link

1873-2445JCR Link
Citation
PHYSICS LETTERS B vol. 802
Keywords
SpectroscopyShell evolutionK-51K-53
Publisher
ELSEVIER
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
We report on the first gamma-ray spectroscopy of K-51,K-53 produced via the Ca-52,Ca-54(p,2p) reactions at similar to 250 MeV/nucleon. Unambiguous final-state angular-momentum assignments were achieved for beam intensities down to few particles per second by using a new technique based on reaction vertex tracking combined with a thick liquid-hydrogen target. Through gamma-ray spectroscopy and exclusive parallel momentum distribution analysis, 3/(2)+ ground states and 1/2(+) first excited states in K-51,K-53 were established quantifying the natural ordering of the 1d(3/2) and 2s(1/2) proton-hole states that are restored at N = 32 and 34. State-of-the-art ab initio calculations and shell-model calculations with improved phenomenological effective interactions reproduce the present data and predict consistently the increase of the E(1/4)- E(3/4) energy differences towards N = 40. (C) 2020 The Authors. Published by Elsevier B.V.
DOI
10.1016/j.physletb.2020.135215
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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