Updated reaction rate of 25Mg(p, & gamma;) 26Al and its astrophysical implication

Zhang, H.1; Su, J.1,2,3; Li, Z. H.4; Li, Y. J.2; Li, E. T.5; Chen, C.2; He, J. J.1,3; Shen, Y. P.2; Lian, G.2; Guo, B.2; Li, X. Y.1; Zhang, L. Y.1,3; Sheng, Y. D.1; Chen, Y. J.1; Wang, L. H.1; Zhang, L.2; Cao, F. Q.2; Nan, W.2; Nan, W. K.2; Li, G. X.2; Song, N.2; Cui, B. Q.2; Chen, L. H.2; Ma, R. G.2; Zhang, Z. C.2; Jiao, T. Y.6; Gao, B. S.6; Tang, X. D.6; Wu, Q.6; Li, J. Q.6; Sun, L. T.6; Wang, S.7; Yan, S. Q.2; Liao, J. H.2; Wang, Y. B.2; Zeng, S.2; Nan, D.2; Fan, Q. W.2; Liu, W. P.2,8

2023-06-05

10.1103/PhysRevC.107.065801

PHYSICAL REVIEW C   影响因子和分区

2469-9985

2469-9993

26Al with a half-life of 7.17x105 years is one of the most significant nuclides in & gamma;-ray astronomy and presolar grains of meteorites. Its main production mechanism in the H-burning MgAl cycle is the 25Mg(p, & gamma;)26Al reaction. In the temperature region of 0.05-0.3 GK of astrophysical interest, the astrophysical 25Mg(p, & gamma;) 26Al reaction rate is dominated by the resonant capture of several low-energy resonances. In this work, we report the results of a complete experimental investigation of the Ec.m. = 92, 130, and 189 keV resonances in the 25Mg(p , & gamma;)26Al reaction with the Jinping Underground Nuclear Astrophysics Experimental Facility. The up-dated thermonuclear 25Mg(p, & gamma; ) 26Al reaction rate is (32-39)% higher than that obtained at the Laboratory for Underground Nuclear Astrophysics around 0.07-0.09 GK, mainly due to the 32% enhancement of the 92-keV resonance strength. The astrophysical impact of our new rate on the 26Al yield in a 5 Mo low-metallicity asymptotic giant branch star is investigated, in which an increase of (45-79)% in the 26Al yield is found by adopting our new 25Mg(p, & gamma; ) 26Al rates.

SCI

英语

其他

National Natural Science Foundation of China["12175152","12275026","11775133","11490563","U1867211","11961141003","11905136","11405096"] ; Continuous Basic Scientific Research Projects["WDJC-2019-13","BJ20002501"] ; equipment research and development project of Chinese Academy of Sciences[28Y531040]

Physics

Physics, Nuclear

WOS:001026275800003

AMER PHYSICAL SOC

PHYSICS

Web of Science

1.Beijing Normal Univ, Coll Nucl Sci & Technol, Key Lab Beam Technol, Minist Educ, Beijing 100875, Peoples R China
2.China Inst Atom Energy, POB 275 10, Beijing 102413, Peoples R China
3.Beijing Acad Sci & Technol, Inst Radiat Technol, Beijing 100875, Peoples R China
4.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China
5.Shenzhen Univ, Inst Adv Study Nucl Energy & Safety, 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 Envi, Weihai 264209, Peoples R China
8.Southern Univ Sci & Technol, Coll Sci, Shenzhen 518055, Peoples R China

Zhang, H.,Su, J.,Li, Z. H.,et al. Updated reaction rate of 25Mg(p, & gamma;) 26Al and its astrophysical implication[J]. PHYSICAL REVIEW C,2023,107(6).

Zhang, H..,Su, J..,Li, Z. H..,Li, Y. J..,Li, E. T..,...&Liu, W. P..(2023).Updated reaction rate of 25Mg(p, & gamma;) 26Al and its astrophysical implication.PHYSICAL REVIEW C,107(6).

Zhang, H.,et al."Updated reaction rate of 25Mg(p, & gamma;) 26Al and its astrophysical implication".PHYSICAL REVIEW C 107.6(2023).