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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
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.Franchoo, S.Soederstroem, P. -A.Takeuchi, S.Toernqvist, H.Vaquero, V.Wagner, V.Werner, V.Xu, X.Yamada, H.Yan, D.Yang, Z.Yasuda, M.Zanetti, L.Wang, S.Achouri, N.Baba, H.Browne, F.Calvet, D.Chateau, F.Chen, S.Chiga, N.Corsi, A.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.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.Cortes, M. L.Delbart, A.Gheller, J. -M.Stuhl, L.Togano, Y.Uesaka, T.Wimmer, K.Yoneda, K.Aktas, O.Aumann, T.Chung, L. X.Flavigny, F.
Ewha Authors
한인식
SCOPUS Author ID
한인식scopus
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
SCI; 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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