Direct measurement of B-11(p,gamma)C-12 astrophysical S factors at low energies

doi:10.1103/PhysRevC.93.055804

	Direct measurement of B-11(p,gamma)C-12 astrophysical S factors at low energies
	He, J. J.1,2; Jia, B. L.1,3; Xu, S. W.1,3; Chen, S. Z.4; Ma, S. B.1,3; Hou, S. Q.1; Hu, J.1,5; Zhang, L. Y.1,6; Yu, X. Q.1
刊名	PHYSICAL REVIEW C
	2016-05-11
卷号	93
ISSN号	2469-9985
DOI	10.1103/PhysRevC.93.055804
英文摘要	We directly measure the absolute cross section of B-11(p,gamma)C-12 in the energy region of E-c.m. = 130-257 keV by using a thin target for the first time. This work is performed on a 320-kV platform at the Institute of Modern Physics in Lanzhou. The astrophysical S factors of this reaction are obtained for capture to the ground and first excited states of C-12. The properties of the known resonance at similar to 150 keV are derived and agree with the previous results. However, in the energy region of 170-240 keV, our S factors are about 15%-50% larger than the adopted values in NACRE II and are also larger than the upper limits of NACRE II by up to similar to 20%. This indicates that our new reaction rate is enhanced by about 15%-50% compared to the NACRE II adopted rate in the temperature region 0.32-0.62 GK.
资助项目	Major State Basic Research Development Program of China[2013CB834406]
WOS关键词	THERMONUCLEAR REACTION-RATES ; LIGHT-NUCLEI ; CROSS-SECTIONS ; COMPILATION ; RESONANCE ; STATE ; C-12
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000375998900007
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/56635]
专题	中国科学院近代物理研究所
通讯作者	Xu, S. W.
作者单位	1.Chinese Acad Sci, IMP, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Key Lab Opt Astron, Natl Astron Observ, Beijing 100012, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Nucl Energy Safety Technol, POB 1135, Hefei 230031, Peoples R China 5.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA 6.Univ Edinburgh, Sch Phys, Mayfield Rd, Edinburgh EH9 3JZ, Midlothian, Scotland
推荐引用方式 GB/T 7714	He, J. J.,Jia, B. L.,Xu, S. W.,et al. Direct measurement of B-11(p,gamma)C-12 astrophysical S factors at low energies[J]. PHYSICAL REVIEW C,2016,93.
APA	He, J. J..,Jia, B. L..,Xu, S. W..,Chen, S. Z..,Ma, S. B..,...&Yu, X. Q..(2016).Direct measurement of B-11(p,gamma)C-12 astrophysical S factors at low energies.PHYSICAL REVIEW C,93.
MLA	He, J. J.,et al."Direct measurement of B-11(p,gamma)C-12 astrophysical S factors at low energies".PHYSICAL REVIEW C 93(2016).