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Thermonuclear F-19(p,alpha(0))O-16 reaction rate

文献类型：期刊论文

作者He, Jian-Jun2; Lombardo, Ivano5; Dell'Aquila, Daniele6,7; Xu, Yi1,3; Zhang, Li-Yong2; Liu, Wei-Ping4
刊名CHINESE PHYSICS C
出版日期2018
卷号42期号:1页码:10
关键词asymptotic giant branch (AGB) star nucleosynthesis astrophysical S factor cross section reaction rate
ISSN号1674-1137
DOI10.1088/1674-1137/42/1/015001
英文摘要The thermonuclear F-19(p,0)O-16 reaction rate in the temperature region 0.007-10 GK has been derived by re-evaluating the availa alpha(b)le experimental data, together with the low-energy theoretical R-matrix extrapolations. Our new rate deviates by up to about 30% compared to the previous results, although all rates are consistent within the uncertainties. At very low temperature (e.g. 0.01 GK) our reaction rate is about 20% lower than the most recently published rate, because of a difference in the low energy extrapolated S-factor and a more accurate estimate of the reduced mass used in the calculation of the reaction rate. At temperatures above similar to 1 GK, our rate is lower, for instance, by about 20% around 1.75 GK, because we have re-evaluated the previous data (Isoya et al., Nucl. Phys. 7, 116 (1958)) in a meticulous way. The present interpretation is supported by the direct experimental data. The uncertainties of the present evaluated rate are estimated to be about 20% in the temperature region below 0.2 GK, and are mainly caused by the lack of low-energy experimental data and the large uncertainties in the existing data. Asymptotic giant branch (AGB) stars evolve at temperatures below 0.2 GK, where the F-19(p,alpha.)O-16 reaction may play a very important role. However, the current accuracy of the reaction rate is insufficient to help to describe, in a careful way, the fluorine over-abundances observed in AGB stars. Precise cross section (or S factor) data in the low energy region are therefore needed for astrophysical nucleosynthesis studies.
WOS关键词ASYMPTOTIC GIANT BRANCH ; CORONAE-BOREALIS STARS ; REACTION F-19(P,ALPHA-0)O-16 ; ANGULAR-DISTRIBUTION ; COULOMB BARRIER ; ALPHA-PARTICLES ; LOW-MASS ; FLUORINE ; RANGE ; F-19
资助项目National Natural Science Foundation of China[11490562] ; National Natural Science Foundation of China[11490560] ; National Natural Science Foundation of China[11675229] ; National Key Research and Development Program of China[2016YFA0400503]
WOS研究方向Physics
语种英语
WOS记录号WOS:000423839100017
出版者CHINESE PHYSICAL SOC
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; National Key Research and Development Program of China
源URL[http://ir.bao.ac.cn/handle/114a11/37400]  
专题中国科学院国家天文台
通讯作者He, Jian-Jun
作者单位1.Extreme Light Infrastruct Nucl Phys, 30 Reactorului St,POB MG-6, Magurele 077125, Jud Ilfov, Romania
2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China
3.Czech Acad Sci, Nucl Phys Inst, Rez 25068, Czech Republic
4.China Inst Atom Energy, POB 275,10, Beijing 102413, Peoples R China
5.INFN, Sez Catania, Via S Sofia, I-95123 Catania, Italy
6.Univ Napoli Federico II, Dip Fis, Via Cintia, I-80126 Naples, Italy
7.INFN, Sez Napoli, Via Cintia, I-80126 Naples, Italy
推荐引用方式
GB/T 7714		 He, Jian-Jun,Lombardo, Ivano,Dell'Aquila, Daniele,et al. Thermonuclear F-19(p,alpha(0))O-16 reaction rate[J]. CHINESE PHYSICS C,2018,42(1):10.
APA He, Jian-Jun,Lombardo, Ivano,Dell'Aquila, Daniele,Xu, Yi,Zhang, Li-Yong,&Liu, Wei-Ping.(2018).Thermonuclear F-19(p,alpha(0))O-16 reaction rate.CHINESE PHYSICS C,42(1),10.
MLA He, Jian-Jun,et al."Thermonuclear F-19(p,alpha(0))O-16 reaction rate".CHINESE PHYSICS C 42.1(2018):10.

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