Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40

Y. L. Sun; A. Obertelli; P. Doornenbal; C. Barbieri; Y. Chazono; T. Duguet; H. N. Liu; P. Navrátil; F. Nowacki; K. Ogata; T. Otsuka; F. Raimondi; V. Somà; Y. Utsuno; K. Yoshida; N. Achouri; H. Baba; F. Browne; D. Calvet; F. Château; S. Chen; N. Chiga; A. Corsi; M. L. Cortés; A. Delbart; J. M. Gheller; A. Giganon; A. Gillibert; C. Hilaire; T. Isobe; T. Kobayashi; Y. Kubota; V. Lapoux; T. Motobayashi; I. Murray; H. Otsu; V. Panin; N. Paul; W. Rodriguez; H. Sakurai; M. Sasano; D. Steppenbeck; L. Stuhl; Y. Togano; T. Uesaka; K. Wimmer; K. Yoneda; O. Aktas; T. Aumann; L. X. Chung; F. Flavigny; S. Franchoo; I. Gašparić; R. B. Gerst; J. Gibelin; K. I. Hahn; D. Kim; T. Koiwai; Y. Kondo; P. Koseoglou; J. Lee; C. Lehr; B. D. Linh; T. Lokotko; M. MacCormick; K. Moschner; T. Nakamura; S. Y. Park; D. Rossi; E. Sahin; D. Sohler; P. A. Söderström; S. Takeuchi; H. Törnqvist; V. Vaquero; V. Wagner; S. Wang; V. Werner; X. Xu; H. Yamada; D. Yan; Z. Yang; M. Yasuda; L. Zanetti

doi:10.1016/j.physletb.2020.135215

Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40

Y. L. Sun, A. Obertelli, P. Doornenbal, C. Barbieri, Y. Chazono, T. Duguet, H. N. Liu, P. Navrátil, F. Nowacki, K. Ogata, T. Otsuka, F. Raimondi, V. Somà, Y. Utsuno, K. Yoshida, N. Achouri, H. Baba, F. Browne, D. Calvet, F. ChâteauS. Chen, N. Chiga, A. Corsi, M. L. Cortés, A. Delbart, J. M. Gheller, A. Giganon, A. Gillibert, C. Hilaire, T. Isobe, T. Kobayashi, Y. Kubota, V. Lapoux, T. Motobayashi, I. Murray, H. Otsu, V. Panin, N. Paul, W. Rodriguez, H. Sakurai, M. Sasano, D. Steppenbeck, L. Stuhl, Y. Togano, T. Uesaka, K. Wimmer, K. Yoneda, O. Aktas, T. Aumann, L. X. Chung, F. Flavigny, S. Franchoo, I. Gašparić, R. B. Gerst, J. Gibelin, K. I. Hahn, D. Kim, T. Koiwai, Y. Kondo, P. Koseoglou, J. Lee, C. Lehr, B. D. Linh, T. Lokotko, M. MacCormick, K. Moschner, T. Nakamura, S. Y. Park, D. Rossi, E. Sahin, D. Sohler, P. A. Söderström, S. Takeuchi, H. Törnqvist, V. Vaquero, V. Wagner, S. Wang, V. Werner, X. Xu, H. Yamada, D. Yan, Z. Yang, M. Yasuda, L. Zanetti

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Abstract

We report on the first γ-ray spectroscopy of ^51,53K produced via the ^52,54Ca(p,2p) reactions at ∼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 γ-ray spectroscopy and exclusive parallel momentum distribution analysis, 3/2⁺ ground states and 1/2⁺ first excited states in ^51,53K 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(1/2₁ ⁺) - E(3/2₁ ⁺) energy differences towards N = 40.

Original language	English
Article number	135215
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	802
DOIs	https://doi.org/10.1016/j.physletb.2020.135215 https://doi.org/10.1016/j.physletb.2020.135215
State	Published - 10 Mar 2020
Externally published	Yes

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Sun, Y. L., Obertelli, A., Doornenbal, P., Barbieri, C., Chazono, Y., Duguet, T., Liu, H. N., Navrátil, P., Nowacki, F., Ogata, K., Otsuka, T., Raimondi, F., Somà, V., Utsuno, Y., Yoshida, K., Achouri, N., Baba, H., Browne, F., Calvet, D., ... Zanetti, L. (2020). Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 802, Article 135215. https://doi.org/10.1016/j.physletb.2020.135215, https://doi.org/10.1016/j.physletb.2020.135215

@article{3c37c842a6884a1d82824d3abdb17298,

title = "Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40",

abstract = "We report on the first γ-ray spectroscopy of 51,53K produced via the 52,54Ca(p,2p) reactions at ∼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 γ-ray spectroscopy and exclusive parallel momentum distribution analysis, 3/2+ ground states and 1/2+ first excited states in 51,53K were established quantifying the natural ordering of the 1d3/2 and 2s1/2 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(1/21 +) - E(3/21 +) energy differences towards N = 40.",

keywords = "K-51, K-53, Shell evolution, Spectroscopy",

author = "Sun, {Y. L.} and A. Obertelli and P. Doornenbal and C. Barbieri and Y. Chazono and T. Duguet and Liu, {H. N.} and P. Navr{\'a}til and F. Nowacki and K. Ogata and T. Otsuka and F. Raimondi and V. Som{\`a} and Y. Utsuno and K. Yoshida and N. Achouri and H. Baba and F. Browne and D. Calvet and F. Ch{\^a}teau and S. Chen and N. Chiga and A. Corsi and Cort{\'e}s, {M. L.} and A. Delbart and Gheller, {J. M.} and A. Giganon and A. Gillibert and C. Hilaire and T. Isobe and T. Kobayashi and Y. Kubota and V. Lapoux and T. Motobayashi and I. Murray and H. Otsu and V. Panin and N. Paul and W. Rodriguez and H. Sakurai and M. Sasano and D. Steppenbeck and L. Stuhl and Y. Togano and T. Uesaka and K. Wimmer and K. Yoneda and O. Aktas and T. Aumann and Chung, {L. X.} and F. Flavigny and S. Franchoo and I. Ga{\v s}pari{\'c} and Gerst, {R. B.} and J. Gibelin and Hahn, {K. I.} and D. Kim and T. Koiwai and Y. Kondo and P. Koseoglou and J. Lee and C. Lehr and Linh, {B. D.} and T. Lokotko and M. MacCormick and K. Moschner and T. Nakamura and Park, {S. Y.} and D. Rossi and E. Sahin and D. Sohler and S{\"o}derstr{\"o}m, {P. A.} and S. Takeuchi and H. T{\"o}rnqvist and V. Vaquero and V. Wagner and S. Wang and V. Werner and X. Xu and H. Yamada and D. Yan and Z. Yang and M. Yasuda and L. Zanetti",

note = "Publisher Copyright: {\textcopyright} 2020 The Authors",

year = "2020",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2020.135215",

language = "English",

volume = "802",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Sun, YL, Obertelli, A, Doornenbal, P, Barbieri, C, Chazono, Y, Duguet, T, Liu, HN, Navrátil, P, Nowacki, F, Ogata, K, Otsuka, T, Raimondi, F, Somà, V, Utsuno, Y, Yoshida, K, Achouri, N, Baba, H, Browne, F, Calvet, D, Château, F, Chen, S, Chiga, N, Corsi, A, Cortés, ML, Delbart, A, Gheller, JM, 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, LX, Flavigny, F, Franchoo, S, Gašparić, I, Gerst, RB, Gibelin, J, Hahn, KI, Kim, D, Koiwai, T, Kondo, Y, Koseoglou, P, Lee, J, Lehr, C, Linh, BD, Lokotko, T, MacCormick, M, Moschner, K, Nakamura, T, Park, SY, Rossi, D, Sahin, E, Sohler, D, Söderström, PA, Takeuchi, S, Törnqvist, H, Vaquero, V, Wagner, V, Wang, S, Werner, V, Xu, X, Yamada, H, Yan, D, Yang, Z, Yasuda, M & Zanetti, L 2020, 'Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 802, 135215. https://doi.org/10.1016/j.physletb.2020.135215, https://doi.org/10.1016/j.physletb.2020.135215

TY - JOUR

T1 - Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40

AU - Sun, Y. L.

AU - Obertelli, A.

AU - Doornenbal, P.

AU - Barbieri, C.

AU - Chazono, Y.

AU - Duguet, T.

AU - Liu, H. N.

AU - Navrátil, P.

AU - Nowacki, F.

AU - Ogata, K.

AU - Otsuka, T.

AU - Raimondi, F.

AU - Somà, V.

AU - Utsuno, Y.

AU - Yoshida, K.

AU - Achouri, N.

AU - Baba, H.

AU - Browne, F.

AU - Calvet, D.

AU - Château, F.

AU - Chen, S.

AU - Chiga, N.

AU - Corsi, A.

AU - Cortés, M. L.

AU - Delbart, A.

AU - Gheller, J. M.

AU - Giganon, A.

AU - Gillibert, A.

AU - Hilaire, C.

AU - Isobe, T.

AU - Kobayashi, T.

AU - Kubota, Y.

AU - Lapoux, V.

AU - Motobayashi, T.

AU - Murray, I.

AU - Otsu, H.

AU - Panin, V.

AU - Paul, N.

AU - Rodriguez, W.

AU - Sakurai, H.

AU - Sasano, M.

AU - Steppenbeck, D.

AU - Stuhl, L.

AU - Togano, Y.

AU - Uesaka, T.

AU - Wimmer, K.

AU - Yoneda, K.

AU - Aktas, O.

AU - Aumann, T.

AU - Chung, L. X.

AU - Flavigny, F.

AU - Franchoo, S.

AU - Gašparić, I.

AU - Gerst, R. B.

AU - Gibelin, J.

AU - Hahn, K. I.

AU - Kim, D.

AU - Koiwai, T.

AU - Kondo, Y.

AU - Koseoglou, P.

AU - Lee, J.

AU - Lehr, C.

AU - Linh, B. D.

AU - Lokotko, T.

AU - MacCormick, M.

AU - Moschner, K.

AU - Nakamura, T.

AU - Park, S. Y.

AU - Rossi, D.

AU - Sahin, E.

AU - Sohler, D.

AU - Söderström, P. A.

AU - Takeuchi, S.

AU - Törnqvist, H.

AU - Vaquero, V.

AU - Wagner, V.

AU - Wang, S.

AU - Werner, V.

AU - Xu, X.

AU - Yamada, H.

AU - Yan, D.

AU - Yang, Z.

AU - Yasuda, M.

AU - Zanetti, L.

PY - 2020/3/10

Y1 - 2020/3/10

N2 - We report on the first γ-ray spectroscopy of 51,53K produced via the 52,54Ca(p,2p) reactions at ∼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 γ-ray spectroscopy and exclusive parallel momentum distribution analysis, 3/2+ ground states and 1/2+ first excited states in 51,53K were established quantifying the natural ordering of the 1d3/2 and 2s1/2 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(1/21 +) - E(3/21 +) energy differences towards N = 40.

AB - We report on the first γ-ray spectroscopy of 51,53K produced via the 52,54Ca(p,2p) reactions at ∼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 γ-ray spectroscopy and exclusive parallel momentum distribution analysis, 3/2+ ground states and 1/2+ first excited states in 51,53K were established quantifying the natural ordering of the 1d3/2 and 2s1/2 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(1/21 +) - E(3/21 +) energy differences towards N = 40.

KW - K-51

KW - K-53

KW - Shell evolution

KW - Spectroscopy

UR - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=pure_puj3&SrcAuth=WosAPI&KeyUT=WOS:000515091400059&DestLinkType=FullRecord&DestApp=WOS

U2 - 10.1016/j.physletb.2020.135215

DO - 10.1016/j.physletb.2020.135215

M3 - Article

AN - SCOPUS:85078626753

SN - 0370-2693

VL - 802

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135215

ER -

Restoration of the natural E1/2+ E3/2+ energy splitting in odd -K isotopes towards N=40

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