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First result from the Jinping Underground Nuclear Astrophysics experiment JUNA: precise measurement of the 92 keV Mg-25(p, y)Al-26 resonance

文献类型：期刊论文

作者Su, Jun1,2; Zhang, Hao1,2; Li, Zhihong1,3; Ventura, Paolo4; Li, Yunju1; Li, Ertao5; Chen, Chen1; Shen, Yangping1; Lian, Gang1; Guo, Bing1
刊名SCIENCE BULLETIN
出版日期2022-01-30
卷号67期号:2页码:125-132
关键词Nuclear astrophysics Underground laboratory Cosmic y ray Resonance reaction
ISSN号2095-9273
DOI10.1016/j.scib.2021.10.018
通讯作者Li, Zhihong(zhli@ciae.ac.cn) ; Liu, Weiping(wpliu@ciae.ac.cn)
英文摘要The 25Mg(p, y)26Al reaction plays an important role in the study of cosmic 1.809 MeV y-ray as a signature of ongoing nucleosynthesis in the Galaxy. At astrophysical temperature around 0.1 GK, the 25Mg(p, y)26Al reaction rates are dominated by the 92 keV resonance capture process. We report a precise measurement of the 92 keV 25Mg(p, y)26Al resonance in the day-one experiment at Jinping Underground Nuclear Astrophysics experiment (JUNA) facility in the China Jinping Underground Laboratory (CJPL). The resonance strength and ground state feeding factor are determined to be 3.8 +/- 0.3 x10-10 eV and 0.66 +/- 0.04, respectively. The results are in agreement with those reported in the previous direct underground measurement within uncertainty, but with significantly reduced uncertainties. Consequently, we recommend new 25Mg(p, y)26Al reaction rates which are by a factor of 2.4 larger than those adopted in REACLIB database at the temperature around 0.1 GK. The new results indicate higher production rates of 26gAl and the cosmic 1.809 MeV y-ray. The implication of the new rates for the understanding of other astrophysical situations is also discussed. (c) 2021 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
WOS关键词RADIOACTIVE AL-26 ; REACTION-RATES ; MG-25(P,GAMMA)AL-26 ; MAGNESIUM ; FE-60 ; ISOTOPES ; STARS
资助项目National Natural Science Foundation of China[11490563] ; National Natural Science Foundation of China[12125509] ; National Natural Science Foundation of China[U1867211] ; National Natural Science Foundation of China[11961141003] ; National Natural Science Foundation of China[11775133] ; National Natural Science Foundation of China[12175152] ; Continuous Basic Scientific Research Project[WDJC-2019-13] ; Equipment Research and Development Project of Chinese Academy of Sciences[28Y531040] ; CNNC
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000740434600006
出版者ELSEVIER
资助机构National Natural Science Foundation of China ; Continuous Basic Scientific Research Project ; Equipment Research and Development Project of Chinese Academy of Sciences ; CNNC
源URL[http://119.78.100.186/handle/113462/142452]  
专题中国科学院近代物理研究所
通讯作者Li, Zhihong; Liu, Weiping
作者单位1.China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China
2.Beijing Normal Univ, Coll Nucl Sci & Technol, Key Lab Beam Technol, Minist Educ, Beijing 100875, Peoples R China
3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China
4.INAF, Osservatorio Astron Roma, Via Frascati 33, I-00077 Monte Porzio Catone, RM, Italy
5.Shenzhen Univ, Coll Phys & Optoelect Engn, Shenzhen 518060, Peoples R China
6.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
7.Shandong Univ, Inst Space Sci, Shandong Prov Key Lab Opt Astron & Solar Terr Env, Weihai 264209, Peoples R China
8.Yalong River Hydropower Dev Co, Chengdu 610051, Peoples R China
推荐引用方式
GB/T 7714		 Su, Jun,Zhang, Hao,Li, Zhihong,et al. First result from the Jinping Underground Nuclear Astrophysics experiment JUNA: precise measurement of the 92 keV Mg-25(p, y)Al-26 resonance[J]. SCIENCE BULLETIN,2022,67(2):125-132.
APA Su, Jun.,Zhang, Hao.,Li, Zhihong.,Ventura, Paolo.,Li, Yunju.,...&Liu, Weiping.(2022).First result from the Jinping Underground Nuclear Astrophysics experiment JUNA: precise measurement of the 92 keV Mg-25(p, y)Al-26 resonance.SCIENCE BULLETIN,67(2),125-132.
MLA Su, Jun,et al."First result from the Jinping Underground Nuclear Astrophysics experiment JUNA: precise measurement of the 92 keV Mg-25(p, y)Al-26 resonance".SCIENCE BULLETIN 67.2(2022):125-132.

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