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Observation of a Strongly Isospin-Mixed Doublet in
Liu, J J; Xu, X X; Sun, L J; Yuan, C X; Kaneko, K; Sun, Y; Liang, P F; Wu, H Y; Shi, G Z; Lin, C J; Lee, J; Wang, S M; Qi, C; Li, J G; Li, H H; Xayavong, Latsamy; Li, Z H; Li, P J; Yang, Y Y; Jian, H; Gao, Y F; Fan, R; Zha, S X; Dai, F C; Zhu, H F; Li, J H; Chang, Z F; Qin, S L; Zhang, Z Z; Cai, B S; Chen, R F; Wang, J S; Wang, D X; Wang, K; Duan, F F; Lam, Y H; Ma, P; Gao, Z H; Hu, Q; Bai, Z; Ma, J B; Wang, J G; Wu, C G; Luo, D W; Jiang, Y; Liu, Y; Hou, D S; Li, R; Ma, N R; Ma, W H.
Afiliación
  • Liu JJ; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Xu XX; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Sun LJ; Department of Physics, The University of Hong Kong, Hong Kong, China.
  • Yuan CX; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China.
  • Kaneko K; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Sun Y; Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China.
  • Liang PF; School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Wu HY; National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA.
  • Shi GZ; Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China.
  • Lin CJ; Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan.
  • Lee J; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Wang SM; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China.
  • Qi C; School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China.
  • Li JG; Department of Physics, The University of Hong Kong, Hong Kong, China.
  • Li HH; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
  • Xayavong L; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Li ZH; Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China.
  • Li PJ; College of Physics and Technology & Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China.
  • Yang YY; Department of Physics, The University of Hong Kong, Hong Kong, China.
  • Jian H; Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China.
  • Gao YF; Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China.
  • Fan R; KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden.
  • Zha SX; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Dai FC; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Zhu HF; Department of Physics, Faculty of Natural Sciences, National University of Laos, Vientiane 01080, Laos.
  • Li JH; State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China.
  • Chang ZF; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Qin SL; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Zhang ZZ; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Cai BS; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Chen RF; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Wang JS; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Wang DX; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Wang K; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Duan FF; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Lam YH; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Ma P; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Gao ZH; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Hu Q; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Bai Z; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Ma JB; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Wang JG; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Wu CG; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Luo DW; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Jiang Y; School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China.
  • Liu Y; Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China.
  • Hou DS; Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China.
  • Li R; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Ma NR; CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
  • Ma WH; College of Science, Huzhou University, Huzhou 313000, China.
Phys Rev Lett ; 129(24): 242502, 2022 Dec 09.
Article en En | MEDLINE | ID: mdl-36563237
ABSTRACT
ß decay of proton-rich nuclei plays an important role in exploring isospin mixing. The ß decay of ^{26}P at the proton drip line is studied using double-sided silicon strip detectors operating in conjunction with high-purity germanium detectors. The T=2 isobaric analog state (IAS) at 13 055 keV and two new high-lying states at 13 380 and 11 912 keV in ^{26}Si are unambiguously identified through ß-delayed two-proton emission (ß2p). Angular correlations of two protons emitted from ^{26}Si excited states populated by ^{26}P ß decay are measured, which suggests that the two protons are emitted mainly sequentially. We report the first observation of a strongly isospin-mixed doublet that deexcites mainly via two-proton decay. The isospin mixing matrix element between the ^{26}Si IAS and the nearby 13 380-keV state is determined to be 130(21) keV, and this result represents the strongest mixing, highest excitation energy, and largest level spacing of a doublet ever observed in ß-decay experiments.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2022 Tipo del documento: Article País de afiliación: China
Texto completo
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2022 Tipo del documento: Article País de afiliación: China