Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory

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	Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory
	An, ZD; Chen, ZP; Ma, YG; Yu, JK; Sun, YY; Fan, GT; Li, YJ; Xu, HH; Huang, BS; Wang, K
刊名	PHYSICAL REVIEW C
	2015
卷号	92 期号:4 页码:—
关键词	CROSS-SECTION STANDARDS ENERGY-LEVELS STELLAR ENERGIES TRIPLE-ALPHA GAMMA)O-16 VICINITY CAPTURE C-12 NUCLEI RATES
ISSN号	0556-2813
通讯作者	Chen, ZP (reprint author), Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
英文摘要	Determination of the accurate astrophysical S factor of C-12(alpha,gamma) O-16 reaction has been regarded as the holy grail of nuclear astrophysics for decades. In current stellar models, a knowledge of that value to better than 10% is desirable. Due to the practical issues, tremendous experimental and theoretical efforts over nearly 50 years are not able to reach this goal, and the published values contradicted with each other strongly and their uncertainties are two times larger than the required precision. To this end we have developed a reduced R-matrix theory based on the classical R-matrix theory of Lane and Thomas, which treats primary transitions to the ground state and four bound states as the independent reaction channels in the channel spin representation. With the coordination of covariance statistics and error-propagation theory, a global fitting for almost all available experimental data of O-16 system has been multi-iteratively analyzed by our powerful code. A reliable, accurate, and self-consistent astrophysical S factor of C-12(alpha,gamma) O-16 was obtained with a recommended value S-tot(0.3 MeV) = 162.7 +/- 7.3 keV b (4.5%) which could meet the required precision.
收录类别	SCI
语种	英语
WOS记录号	WOS:000362438900003
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24869]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	An, ZD,Chen, ZP,Ma, YG,et al. Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory[J]. PHYSICAL REVIEW C,2015,92(4):—.
APA	An, ZD.,Chen, ZP.,Ma, YG.,Yu, JK.,Sun, YY.,...&Wang, K.(2015).Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory.PHYSICAL REVIEW C,92(4),—.
MLA	An, ZD,et al."Astrophysical S factor of the C-12(alpha,gamma) O-16 reaction calculated with reduced R-matrix theory".PHYSICAL REVIEW C 92.4(2015):—.