Physics Letters B (Sep 2023)
Shape coexistence in 66Se
- Z. Elekes,
- V. Panin,
- T.R. Rodríguez,
- K. Sieja,
- D.S. Ahn,
- A. Al-Adili,
- H. Baba,
- A.I. Stefanescu,
- K.J. Cook,
- Cs. Dósa,
- N. Fukuda,
- J. Gao,
- J. Gibelin,
- K.I. Hahn,
- Z. Halász,
- S.W. Huang,
- T. Isobe,
- M.M. Juhász,
- D. Kim,
- T. Kobayashi,
- Y. Kondo,
- Z. Korkulu,
- A. Kurihara,
- I. Kuti,
- H. Miki,
- K. Miki,
- T. Motobayashi,
- H. Otsu,
- A. Saastamoinen,
- M. Sasano,
- H. Sato,
- T. Shimada,
- Y. Shimizu,
- L.G. Sobotka,
- I. Stefanescu,
- L. Stuhl,
- H. Suzuki,
- H. Takeda,
- Y. Togano,
- T. Tomai,
- L. Trache,
- D. Tudor,
- T. Uesaka,
- Y. Utsuki,
- H. Wang,
- A. Yasuda,
- K. Yoneda,
- Y. Yoshitome
Affiliations
- Z. Elekes
- Atomki, P.O. Box 51, H-4001 Debrecen, Hungary; Institute of Physics, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary; Corresponding author at: Atomki, P.O. Box 51, H-4001 Debrecen, Hungary.
- V. Panin
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany; GSI Helmoltzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
- T.R. Rodríguez
- Complutense University of Madrid, Avda. de Séneca, 2 Ciudad Universitaria, 28040 Madrid, Spain
- K. Sieja
- Université de Strasbourg, IPHC, 23 rue du Loess, 67037 Strasbourg, France; CNRS, UMR7178, 67037 Strasbourg, France
- D.S. Ahn
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Korea
- A. Al-Adili
- Uppsala University, P.O. Box 256, SE-751 05 Uppsala, Sweden
- H. Baba
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A.I. Stefanescu
- IFIN-HH, Department of Nuclear Physics, Reactorului 30, Măgurele, Romania
- K.J. Cook
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- Cs. Dósa
- Atomki, P.O. Box 51, H-4001 Debrecen, Hungary
- N. Fukuda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- J. Gao
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, No. 5 Yiheyuan Road, Haidian district, 100871, Beijing, China
- J. Gibelin
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, F-14050 Caen, France
- K.I. Hahn
- Ewha Womans University, Seoul 120-750, Korea; Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Korea
- Z. Halász
- Atomki, P.O. Box 51, H-4001 Debrecen, Hungary
- S.W. Huang
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, No. 5 Yiheyuan Road, Haidian district, 100871, Beijing, China
- T. Isobe
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- M.M. Juhász
- Atomki, P.O. Box 51, H-4001 Debrecen, Hungary; Institute of Physics, Faculty of Science and Technology, University of Debrecen, Egyetem tér 1., H-4032 Debrecen, Hungary
- D. Kim
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Ewha Womans University, Seoul 120-750, Korea; Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Korea
- T. Kobayashi
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- Y. Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- Z. Korkulu
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Korea; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Kurihara
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- I. Kuti
- Atomki, P.O. Box 51, H-4001 Debrecen, Hungary
- H. Miki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- K. Miki
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- T. Motobayashi
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- H. Otsu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- A. Saastamoinen
- Texas A&M University, Department of Physics and Astronomy, 578 University Drive College Station, TX 77843-4242, USA
- M. Sasano
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- H. Sato
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Shimada
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- Y. Shimizu
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- L.G. Sobotka
- Department of Chemistry, Washington University, One Brookings Drive, St. Louis, MO 63130, USA
- I. Stefanescu
- IFIN-HH, Department of Nuclear Physics, Reactorului 30, Măgurele, Romania; Doctoral School of Physics, University of Bucharest, 405 Atomiştilor Street, Măgurele, Ilfov, 077125, Romania
- L. Stuhl
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Korea; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan; Atomki, P.O. Box 51, H-4001 Debrecen, Hungary
- H. Suzuki
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- H. Takeda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y. Togano
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 172-8501, Japan; RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- T. Tomai
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- L. Trache
- IFIN-HH, Department of Nuclear Physics, Reactorului 30, Măgurele, Romania
- D. Tudor
- IFIN-HH, Department of Nuclear Physics, Reactorului 30, Măgurele, Romania; Doctoral School of Physics, University of Bucharest, 405 Atomiştilor Street, Măgurele, Ilfov, 077125, Romania
- T. Uesaka
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y. Utsuki
- Department of Physics, Tohoku University, Sendai 980-8578, Japan
- H. Wang
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- A. Yasuda
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- K. Yoneda
- RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Y. Yoshitome
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo, 152-8551, Japan
- Journal volume & issue
-
Vol. 844
p. 138072
Abstract
The nuclear structure of 66Se, nucleus beyond the N=Z line on the proton-rich side of the valley of stability, was investigated by the neutron knock-out reaction 67Se(12C,X)66Se using a 12C target. The analysis of the singles spectrum of the γ-rays emitted during the de-excitation of the populated low-lying excited states revealed two previously detected (927(4) keV, 1460(32) keV) and three new (744(6) keV, 1210(17) keV, 1661(23) keV) transitions. The 744-keV, the 1210-keV, and the 1460-keV transitions were found to be in coincidence with the one at 927 keV. The spectrum coincident with the 927-keV transition showed a further possible transition at 299(35) keV, which was obscured by significant atomic background in the singles spectrum. This transition might correspond to a peak previously reported at 273(5) keV that could not be assigned to 66Se unambiguously. Based on a comparison of the experimental data to theoretical calculations, four new excited states are proposed which suggest that 66Se exhibits shape coexistence.
