First spectroscopic study of 51Ar by the (p,2p) reaction

M. M. Juhász; Z. Elekes; D. Sohler; Y. Utsuno; K. Yoshida; T. Otsuka; K. Ogata; P. Doornenbal; A. Obertelli; 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. L. Sun; Y. Togano; T. Uesaka; K. Wimmer; K. Yoneda; N. L. Achouri; O. Aktas; T. Aumann; L. X. Chung; Zs Dombrádi; 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; H. N. Liu; T. Lokotko; M. MacCormick; K. Moschner; T. Nakamura; S. Y. Park; D. Rossi; E. Sahin; 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.2021.136108

First spectroscopic study of ⁵¹Ar by the (p,2p) reaction

M. M. Juhász
, Z. Elekes^*
, D. Sohler
, Y. Utsuno
, K. Yoshida
, T. Otsuka
, K. Ogata
, P. Doornenbal
, A. Obertelli
, 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. L. Sun, Y. Togano, T. Uesaka, K. Wimmer, K. Yoneda, N. L. Achouri, O. Aktas, T. Aumann, L. X. Chung, Zs Dombrádi, 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, H. N. Liu, T. Lokotko, M. MacCormick, K. Moschner, T. Nakamura, S. Y. Park, D. Rossi, E. Sahin, 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

^*Corresponding author for this work

Institute for Nuclear Research
University of Debrecen
The University of Tokyo
Japan Atomic Energy Agency
KU Leuven
RIKEN
The University of Osaka
Osaka Metropolitan University
Technische Universität Darmstadt
Université Paris-Saclay
Peking University
The University of Hong Kong
Tohoku University
CNRS/IN2P3
Universidad Nacional de Colombia
Universidad Javeriana
Rikkyo University
Normandie Université
KTH Royal Institute of Technology
GSI Helmholtz Centre for Heavy Ion Research
Vietnam Atomic Energy Institute
Ruder Boskovic Institute
University of Cologne
Ewha Womans University
Institute of Science Tokyo
University of Oslo
Consejo Superior de Investigaciones Científicas
Chinese Academy of Sciences

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

The nuclear structure of ⁵¹Ar, an uncharted territory so far, was studied by the (p,2p) reaction using γ-ray spectroscopy for the bound states and the invariant mass method for the unbound states. Two peaks were detected in the γ-ray spectrum and six peaks were observed in the ⁵⁰Ar+n relative energy spectrum. Comparing the results to our shell-model calculations, two bound and six unbound states were established. Three of the unbound states could only be placed tentatively due to the low number of counts in the relative energy spectrum of events associated with the decay through the first excited state of ⁵⁰Ar. The low cross sections populating the two bound states of ⁵¹Ar could be interpreted as a clear signature for the presence of significant subshell closures at neutron numbers 32 and 34 in argon isotopes. It was also revealed that due to the two valence holes, unbound collective states coexist with individual-particle states in ⁵¹Ar.

Original language	English
Article number	136108
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	814
DOIs	https://doi.org/10.1016/j.physletb.2021.136108
State	Published - 10 Mar 2021
Externally published	Yes

Keywords

Invariant mass method
Nuclear structure
Proton knock-out reaction
Shell closure
γ-ray spectroscopy

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10.1016/j.physletb.2021.136108

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Juhász, M. M., Elekes, Z., Sohler, D., Utsuno, Y., Yoshida, K., Otsuka, T., Ogata, K., Doornenbal, P., Obertelli, A., Baba, H., Browne, F., Calvet, D., Château, F., Chen, S., Chiga, N., Corsi, A., Cortés, M. L., Delbart, A., Gheller, J. M., ... Zanetti, L. (2021). First spectroscopic study of ⁵¹Ar by the (p,2p) reaction. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 814, Article 136108. https://doi.org/10.1016/j.physletb.2021.136108

@article{2e50222030224ae19b64ed89bd4dd084,

title = "First spectroscopic study of 51Ar by the (p,2p) reaction",

abstract = "The nuclear structure of 51Ar, an uncharted territory so far, was studied by the (p,2p) reaction using γ-ray spectroscopy for the bound states and the invariant mass method for the unbound states. Two peaks were detected in the γ-ray spectrum and six peaks were observed in the 50Ar+n relative energy spectrum. Comparing the results to our shell-model calculations, two bound and six unbound states were established. Three of the unbound states could only be placed tentatively due to the low number of counts in the relative energy spectrum of events associated with the decay through the first excited state of 50Ar. The low cross sections populating the two bound states of 51Ar could be interpreted as a clear signature for the presence of significant subshell closures at neutron numbers 32 and 34 in argon isotopes. It was also revealed that due to the two valence holes, unbound collective states coexist with individual-particle states in 51Ar.",

keywords = "Invariant mass method, Nuclear structure, Proton knock-out reaction, Shell closure, γ-ray spectroscopy",

author = "Juh{\'a}sz, \{M. M.\} and Z. Elekes and D. Sohler and Y. Utsuno and K. Yoshida and T. Otsuka and K. Ogata and P. Doornenbal and A. Obertelli 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 Sun, \{Y. L.\} and Y. Togano and T. Uesaka and K. Wimmer and K. Yoneda and Achouri, \{N. L.\} and O. Aktas and T. Aumann and Chung, \{L. X.\} and Zs Dombr{\'a}di 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 Liu, \{H. N.\} and T. Lokotko and M. MacCormick and K. Moschner and T. Nakamura and Park, \{S. Y.\} and D. Rossi and E. Sahin 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} 2021 The Author(s)",

year = "2021",

month = mar,

day = "10",

doi = "10.1016/j.physletb.2021.136108",

language = "英语",

volume = "814",

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

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Juhász, MM, Elekes, Z, Sohler, D, Utsuno, Y, Yoshida, K, Otsuka, T, Ogata, K, Doornenbal, P, Obertelli, A, 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, Sun, YL, Togano, Y, Uesaka, T, Wimmer, K, Yoneda, K, Achouri, NL, Aktas, O, Aumann, T, Chung, LX, Dombrádi, Z, 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, Liu, HN, Lokotko, T, MacCormick, M, Moschner, K, Nakamura, T, Park, SY, Rossi, D, Sahin, E, 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 2021, 'First spectroscopic study of ⁵¹Ar by the (p,2p) reaction', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 814, 136108. https://doi.org/10.1016/j.physletb.2021.136108

TY - JOUR

T1 - First spectroscopic study of 51Ar by the (p,2p) reaction

AU - Juhász, M. M.

AU - Elekes, Z.

AU - Sohler, D.

AU - Utsuno, Y.

AU - Yoshida, K.

AU - Otsuka, T.

AU - Ogata, K.

AU - Doornenbal, P.

AU - Obertelli, A.

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 - Sun, Y. L.

AU - Togano, Y.

AU - Uesaka, T.

AU - Wimmer, K.

AU - Yoneda, K.

AU - Achouri, N. L.

AU - Aktas, O.

AU - Aumann, T.

AU - Chung, L. X.

AU - Dombrádi, Zs

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 - Liu, H. N.

AU - Lokotko, T.

AU - MacCormick, M.

AU - Moschner, K.

AU - Nakamura, T.

AU - Park, S. Y.

AU - Rossi, D.

AU - Sahin, E.

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 - 2021/3/10

Y1 - 2021/3/10

N2 - The nuclear structure of 51Ar, an uncharted territory so far, was studied by the (p,2p) reaction using γ-ray spectroscopy for the bound states and the invariant mass method for the unbound states. Two peaks were detected in the γ-ray spectrum and six peaks were observed in the 50Ar+n relative energy spectrum. Comparing the results to our shell-model calculations, two bound and six unbound states were established. Three of the unbound states could only be placed tentatively due to the low number of counts in the relative energy spectrum of events associated with the decay through the first excited state of 50Ar. The low cross sections populating the two bound states of 51Ar could be interpreted as a clear signature for the presence of significant subshell closures at neutron numbers 32 and 34 in argon isotopes. It was also revealed that due to the two valence holes, unbound collective states coexist with individual-particle states in 51Ar.

AB - The nuclear structure of 51Ar, an uncharted territory so far, was studied by the (p,2p) reaction using γ-ray spectroscopy for the bound states and the invariant mass method for the unbound states. Two peaks were detected in the γ-ray spectrum and six peaks were observed in the 50Ar+n relative energy spectrum. Comparing the results to our shell-model calculations, two bound and six unbound states were established. Three of the unbound states could only be placed tentatively due to the low number of counts in the relative energy spectrum of events associated with the decay through the first excited state of 50Ar. The low cross sections populating the two bound states of 51Ar could be interpreted as a clear signature for the presence of significant subshell closures at neutron numbers 32 and 34 in argon isotopes. It was also revealed that due to the two valence holes, unbound collective states coexist with individual-particle states in 51Ar.

KW - Invariant mass method

KW - Nuclear structure

KW - Proton knock-out reaction

KW - Shell closure

KW - γ-ray spectroscopy

UR - https://www.scopus.com/pages/publications/85100013357

U2 - 10.1016/j.physletb.2021.136108

DO - 10.1016/j.physletb.2021.136108

M3 - 文章

AN - SCOPUS:85100013357

SN - 0370-2693

VL - 814

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 - 136108

ER -

First spectroscopic study of ⁵¹Ar by the (p,2p) reaction

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Keywords

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