Physics Letters B (Mar 2021)
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
Affiliations
- M.M. Juhász
- Atomki, Eötvös Loránd Research Network (ELKH), P.O. Box 51, H-4001 Debrecen, Hungary; University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary
- Z. Elekes
- Atomki, Eötvös Loránd Research Network (ELKH), P.O. Box 51, H-4001 Debrecen, Hungary; Corresponding author.
- D. Sohler
- Atomki, Eötvös Loránd Research Network (ELKH), P.O. Box 51, H-4001 Debrecen, Hungary
- Y. Utsuno
- Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
- K. Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
- T. Otsuka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics and Center for Nuclear Study, University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
- K. Ogata
- Research Center for Nuclear Physics (RCNP), Osaka University, Ibaraki 567-0047, Japan; Department of Physics, Osaka City University, Osaka 558-8585, Japan
- P. Doornenbal
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Obertelli
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- H. Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- F. Browne
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- D. Calvet
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- F. Château
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- S. Chen
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, People's Republic of China; Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
- N. Chiga
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Corsi
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- M.L. Cortés
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Delbart
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- J.-M. Gheller
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Giganon
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- A. Gillibert
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- C. Hilaire
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- T. Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Kobayashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- Y. Kubota
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
- V. Lapoux
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- T. Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- I. Murray
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- H. Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- V. Panin
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- N. Paul
- IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- W. Rodriguez
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Universidad Nacional de Colombia, Sede Bogota, Facultad de Ciencias, Departamento de Física, 111321, Bogotá, Colombia; Pontificia Universidad Javeriana, Facultad de Ciencias, Departamento de Física, Bogotá, Colombia
- H. Sakurai
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- M. Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- D. Steppenbeck
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- L. Stuhl
- Center for Nuclear Study, University of Tokyo, RIKEN campus, Wako, Saitama 351-0198, Japan
- Y.L. Sun
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
- Y. Togano
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan
- T. Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- K. Wimmer
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- K. Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- N.L. Achouri
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
- O. Aktas
- Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
- T. Aumann
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- L.X. Chung
- Institute for Nuclear Science & Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Viet Nam
- Zs. Dombrádi
- Atomki, Eötvös Loránd Research Network (ELKH), P.O. Box 51, H-4001 Debrecen, Hungary
- F. Flavigny
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- S. Franchoo
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- I. Gašparić
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia
- R.-B. Gerst
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
- J. Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
- K.I. Hahn
- Ewha Womans University, Seoul 120-750, Republic of Korea
- D. Kim
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Ewha Womans University, Seoul 120-750, Republic of Korea
- T. Koiwai
- Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo 113-0033, Japan
- Y. Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- P. Koseoglou
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- J. Lee
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
- C. Lehr
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- B.D. Linh
- Institute for Nuclear Science & Technology, VINATOM, P.O. Box 5T-160, Nghia Do, Hanoi, Viet Nam
- H.N. Liu
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France; Department of Physics, Royal Institute of Technology, SE-10691 Stockholm, Sweden
- T. Lokotko
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
- M. MacCormick
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
- K. Moschner
- Institut für Kernphysik, Universität zu Köln, D-50937 Cologne, Germany
- T. Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- S.Y. Park
- Ewha Womans University, Seoul 120-750, Republic of Korea
- D. Rossi
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- E. Sahin
- Department of Physics, University of Oslo, N-0316 Oslo, Norway
- P.-A. Söderström
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- S. Takeuchi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- H. Törnqvist
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- V. Vaquero
- Instituto de Estructura de la Materia, CSIC, E-28006 Madrid, Spain
- V. Wagner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- S. Wang
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- V. Werner
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- X. Xu
- Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong
- H. Yamada
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- D. Yan
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, People's Republic of China
- Z. Yang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M. Yasuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- L. Zanetti
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- Journal volume & issue
-
Vol. 814
p. 136108
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.
