中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
beta-decay spectroscopy of S-27

文献类型:期刊论文

作者Sun, L. J.2,3,4; Xu, X. X.2,3; Lin, C. J.1,2; Lee, J.3; Hou, S. Q.5; Yuan, C. X.6; Li, Z. H.7; Jose, J.8,9; He, J. J.10,11; Wang, J. S.5
刊名PHYSICAL REVIEW C
出版日期2019-06-10
卷号99期号:6页码:22
ISSN号2469-9985
DOI10.1103/PhysRevC.99.064312
通讯作者Xu, X. X.(xinxing@hku.hk)
英文摘要Background: beta-decay spectroscopy provides valuable nuclear physics input for accurate modeling of nova and x-ray burst observables and a stringent test for shell-model theories far from the stability line. The decay scheme of S-27 is complicated and far from being understood due to a lack of experimental data prior to this work. Purpose: We aim to experimentally constrain the thermonuclear Si-26(p, gamma)P-27 reaction rate and to probe the possible mirror asymmetry in S-27 and Na-27 decays. Method: The S-27 ions were collected by double-sided silicon strip detectors operating in conjunction with high-purity germanium detectors, so the positrons, protons, and gamma rays emitted in the decay were measured simultaneously. Results: The precise resonance energy and the ratio between gamma and proton partial widths of the key 3/2(+) resonance were obtained, thereby determining the Si-26(p, gamma)P-27 reaction rate based mainly on experimental constraints. The half-life of S-27, the excitation energies, beta-feeding intensities, log ft values, and Gamow-Teller transition strengths for the states of P-27 populated in the beta decay of S-27 were determined. A more complete S-27 P-decay scheme was constructed and compared to the beta decay of mirror nucleus Na-27 and to the shell-model calculations with the universal sd (USD) Hamiltonian taking into account the shift of single-particle energies and the reduction of two-body matrix elements. Conclusions: This work yields a new Si-26(p, gamma)P-27 reaction rate two orders of magnitude lower than the rate recommended in the reaction rate libraries at around 0.1 GK. Experimental evidence for the observation of mirror asymmetries for the Gamow-Teller transitions of S-27 and Na-27 is also provided. The shell-model calculations using a modified USD interaction related to the weakly bound proton 1s(1/2) orbit give a reasonable description of the decay properties of S-27.
WOS关键词DELAYED PROTON EMISSION ; REACTION-RATES ; SI-26(P,GAMMA)P-27 REACTION ; COULOMB DISSOCIATION ; 2-PROTON EMISSION ; LIGHT-NUCLEI ; NUCLEOSYNTHESIS ; MASS ; GRAPHS ; TABLES
资助项目Ministry of Science and Technology of China under the National Key RD Programs[2018YFA0404404] ; Ministry of Science and Technology of China under the National Key RD Programs[2016YFA0400503] ; National Natural Science Foundation of China[11805120] ; National Natural Science Foundation of China[11805280] ; National Natural Science Foundation of China[11825504] ; National Natural Science Foundation of China[11811530071] ; National Natural Science Foundation of China[11705244] ; National Natural Science Foundation of China[11705285] ; National Natural Science Foundation of China[11775316] ; National Natural Science Foundation of China[U1732145] ; National Natural Science Foundation of China[11635015] ; National Natural Science Foundation of China[11675229] ; National Natural Science Foundation of China[U1632136] ; National Natural Science Foundation of China[11505293] ; National Natural Science Foundation of China[11475263] ; National Natural Science Foundation of China[11490562] ; National Natural Science Foundation of China[U1432246] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019406] ; China Postdoctoral Science Foundation[2017M621442] ; China Postdoctoral Science Foundation[2017M621035] ; Office of China Postdoctoral Council under the International Postdoctoral Exchange Fellowship Program (Talent-Dispatch Program)[20180068]
WOS研究方向Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000470858500001
资助机构Ministry of Science and Technology of China under the National Key RD Programs ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; Office of China Postdoctoral Council under the International Postdoctoral Exchange Fellowship Program (Talent-Dispatch Program)
源URL[http://119.78.100.186/handle/113462/133162]  
专题中国科学院近代物理研究所
通讯作者Xu, X. X.
作者单位1.Guangxi Normal Univ, Coll Phys & Technol, Guilin 541004, Peoples R China
2.China Inst Atom Energy, Dept Nucl Phys, Beijing 102413, Peoples R China
3.Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
4.Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China
5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
6.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China
7.Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
8.Univ Politecn Cataluna, Dept Fis, Escola Engn Barcelona Est, Av Eduard Maristany 10, E-08930 Barcelona, Spain
9.Inst Estudis Espacials Catalunya, Ed Nexus 201,C Gran Capita 2-4, E-08034 Barcelona, Spain
10.Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China
推荐引用方式
GB/T 7714
Sun, L. J.,Xu, X. X.,Lin, C. J.,et al. beta-decay spectroscopy of S-27[J]. PHYSICAL REVIEW C,2019,99(6):22.
APA Sun, L. J..,Xu, X. X..,Lin, C. J..,Lee, J..,Hou, S. Q..,...&Zhang, H. Q..(2019).beta-decay spectroscopy of S-27.PHYSICAL REVIEW C,99(6),22.
MLA Sun, L. J.,et al."beta-decay spectroscopy of S-27".PHYSICAL REVIEW C 99.6(2019):22.

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来源:近代物理研究所

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