A drop in the Li-6(p, gamma)Be-7 reaction at low energies

doi:10.1016/j.physletb.2013.07.044

	A drop in the Li-6(p, gamma)Be-7 reaction at low energies
	Xu, SW1 ; Hu, J1 ; Ma, XW1 ; Wiescher, M 1; deBoer, RJ 1; Kajino, T 1; Kusakabe, M 1; Zhang, LY 1; Hou, SQ 1; Yu, XQ1
刊名	PHYSICS LETTERS B
	2013
卷号	725 页码:287-291
关键词	Radiative capture Direct capture S factors Big-bang nucleosynthesis
ISSN号	0370-2693
DOI	10.1016/j.physletb.2013.07.044
英文摘要	The low-energy astrophysical S factors of the Li-6(p, gamma)Be-7 reaction have been investigated on a 320 kV platform at the Institute of Modern Physics in Lanzhou. The experimental S factor of this reaction shows an interesting sizable drop contrary to any existing theoretical expectations at energies below 200 keV. Such drop has not been fully understood yet and may reflect a novel reaction mechanism. The appearance of an interesting new positive-parity 1/2(+) or 3/2(+) resonance at E-c.m. approximate to 195 keV is discussed. This study shows the danger of extrapolating experimental data over too large an energy range and demonstrates the need for careful direct experimental studies of reaction cross sections at or near stellar energies. In addition, our new results are discussed in the framework of a SUSY assisted Big-Bang Nucleosynthesis (BBN) model. (C) 2013 Elsevier B.V. All rights reserved.
资助项目	MEXT[2010544]
WOS关键词	NUCLEAR ASTROPHYSICS ; RADIATIVE-CAPTURE ; LIGHT-NUCLEI ; REACTION LI-6(P,GAMMA)BE-7 ; H-2(D,GAMMA)HE-4 REACTION ; LI-6(P,HE-3)HE-4 REACTION ; CROSS-SECTIONS ; UNIVERSE
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语;
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000324223100013
内容类型	期刊论文
源URL	[http://ir.impcas.ac.cn/handle/113462/23392]
专题	近代物理研究所_实验物理中心近代物理研究所_兰州重离子研究装置
通讯作者	He, JJ (reprint author), Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Ruhr Univ Bochum, Fak Phys & Astron, D-44780 Bochum, Germany 4.Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA 5.Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan 6.Univ Tokyo, Inst Cosm Ray Res, Kashiwa, Chiba 2778582, Japan 7.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, Tokyo 1130033, Japan 8.China Inst Atom Energy, Beijing 102413, Peoples R China
推荐引用方式 GB/T 7714	Xu, SW,Hu, J,Ma, XW,et al. A drop in the Li-6(p, gamma)Be-7 reaction at low energies[J]. PHYSICS LETTERS B,2013,725:287-291.
APA	Xu, SW.,Hu, J.,Ma, XW.,Wiescher, M.,deBoer, RJ.,...&Rolfs, CE.(2013).A drop in the Li-6(p, gamma)Be-7 reaction at low energies.PHYSICS LETTERS B,725,287-291.
MLA	Xu, SW,et al."A drop in the Li-6(p, gamma)Be-7 reaction at low energies".PHYSICS LETTERS B 725(2013):287-291.