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	Observation of a Strongly Isospin-Mixed Doublet in Si-26 via beta-Delayed Two-Proton Decay of P-26
	Liu, J. J.1; Xu, X. X.1,2,3,4,5; Sun, L. J.6,7; Yuan, C. X.8; Kaneko, K.9; Sun, Y.6; Liang, P. F.2; Wu, H. Y.10; Shi, G. Z.1; Lin, C. J.3,11; Lee, J.2; Wang, S. M.12,13; Qi, C.14; Li, J. G.1; Li, H. H.1; Xayavong, Latsamy15...更多 Liu, J. J.1; Xu, X. X.1,2,3,4,5; Sun, L. J.6,7; Yuan, C. X.8; Kaneko, K.9; Sun, Y.6; Liang, P. F.2; Wu, H. Y.10; Shi, G. Z.1; Lin, C. J.3,11; Lee, J.2; Wang, S. M.12,13; Qi, C.14; Li, J. G.1; Li, H. H.1; Xayavong, Latsamy15; Li, Z. H.10; Li, P. J.1; Yang, Y. Y.1; Jian, H.1; Gao, Y. F.1,4; Fan, R.1,4; Zha, S. X.1,4; Dai, F. C.1,4; Zhu, H. F.1,4; Li, J. H.1,4; Chang, Z. F.1,4; Qin, S. L.4; Zhang, Z. Z.8; Cai, B. S.8; Chen, R. F.1; Wang, J. S.1,16; Wang, D. X.1,3; Wang, K.1,17; Duan, F. F.1,18; Lam, Y. H.1; Ma, P.1; Gao, Z. H.1,18; Hu, Q.1; Bai, Z.1; Ma, J. B.1; Wang, J. G.1; Wu, C. G.10; Luo, D. W.10; Jiang, Y.10; Liu, Y.10; Hou, D. S.1; Li, R.1; Ma, N. R.3; Ma, W. H.1; Yu, G. M.1,19; Patel, D.1,20; Jin, S. Y.1; Wang, Y. F.1,21; Yu, Y. C.1,21; Hu, L. Y.19; Wang, X.10; Zang, H. L.10; Wang, K. L.1; Ding, B.1; Zhao, Q. Q.2; Yang, L.3; Wen, P. W.3; Yang, F.3; Jia, H. M.3; Zhang, G. L.22; Pan, M.3,22; Wang, X. Y.22; Sun, H. H.3; Xu, H. S.1,5; Zhou, X. H.1,5; Zhang, Y. H.1,5; Hu, Z. G.1,4,5; Wang, M.1,4,5; Liu, M. L.1; Ong, H. J.1,23; Yang, W. Q.1; RIBLL Collaboration收起
	2022-12-08
Source Publication	PHYSICAL REVIEW LETTERS
ISSN	0031-9007
Volume	129Issue:24
Abstract	beta decay of proton-rich nuclei plays an important role in exploring isospin mixing. The beta decay of P-26 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 Si-26 are unambiguously identified through beta-delayed two-proton emission (beta 2p). Angular correlations of two protons emitted from Si-26 excited states populated by P-26 beta 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 Si-26 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 beta-decay experiments.
Publisher	AMER PHYSICAL SOC
DOI	10.1103/PhysRevLett.129.242502
Indexed By	SCIE
Language	英语
WOS Research Area	Physics
WOS Subject	Physics, Multidisciplinary
WOS ID	WOS:000902152000002
Original Document Type	Article
Citation statistics
Document Type	期刊论文
Identifier	https://ir.lzu.edu.cn/handle/262010/492925
Collection	兰州大学
Affiliation	1.Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China; 2.Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China; 3.China Inst Atom Energy, Dept Nucl Phys, Beijing 102413, Peoples R China; 4.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China; 5.Adv Energy Sci & Technol Guangdong Lab, Huizhou 516003, Peoples R China; 6.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China; 7.Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA; 8.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China; 9.Kyushu Sangyo Univ, Dept Phys, Fukuoka 8138503, Japan; 10.Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China; 11.Guangxi Normal Univ, Coll Phys & Technol, Guangxi Key Lab Nucl Phys & Technol, Guilin 541004, Peoples R China; 12.Fudan Univ, Inst Modern Phys, Key Lab Nucl Phys & Ion beam Applicat MOE, Shanghai 200433, Peoples R China; 13.Fudan Univ, Shanghai Res Ctr Theoret Nucl Phys, Shanghai 200438, Peoples R China; 14.KTH Royal Inst Technol, S-10044 Stockholm, Sweden; 15.Natl Univ Laos, Fac Nat Sci, Dept Phys, Viangchan, Laos; 16.Huzhou Univ, Coll Sci, Huzhou 313000, Peoples R China; 17.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China; 18.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China; 19.Harbin Engn Univ, Fundamental Sci Nucl Safety & Simulat Technol Lab, Harbin 150001, Peoples R China; 20.Sardar Vallabhbhai Natl Inst Technol, Dept Phys, Surat 395007, India; 21.Yunnan Univ, Sch Phys & Astron, Kunming 650091, Peoples R China; 22.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China; 23.Osaka Univ, RCNP, Osaka 5670047, Japan
First Author Affilication	School of Nuclear Science and Technology
Recommended Citation GB/T 7714	Liu, J. J.,Xu, X. X.,Sun, L. J.,et al. Observation of a Strongly Isospin-Mixed Doublet in Si-26 via beta-Delayed Two-Proton Decay of P-26[J]. PHYSICAL REVIEW LETTERS,2022,129(24).
APA	Liu, J. J..,Xu, X. X..,Sun, L. J..,Yuan, C. X..,Kaneko, K..,...&RIBLL Collaboration.(2022).Observation of a Strongly Isospin-Mixed Doublet in Si-26 via beta-Delayed Two-Proton Decay of P-26.PHYSICAL REVIEW LETTERS,129(24).
MLA	Liu, J. J.,et al."Observation of a Strongly Isospin-Mixed Doublet in Si-26 via beta-Delayed Two-Proton Decay of P-26".PHYSICAL REVIEW LETTERS 129.24(2022).

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