Determination of the subthreshold state contribution in 13C(α,n)16O, the main neutron-source reaction for the s process -: art. no. 062501

被引：58
|
作者：
Kubono, S
Abe, K
Kato, S
Teranishi, T
Kurokawa, M
Liu, X
Imai, N
Kumagai, K
Strasser, P
Tanaka, MH
Fuchi, Y
Lee, CS
Kwon, YK
Lee, L
Ha, JH
Kim, YK
机构：
[1] Univ Tokyo, Ctr Nucl Study, RIKEN, Wako Branch, Wako, Saitama 3510198, Japan
[2] Yamagata Univ, Dept Phys, Yamagata 9998560, Japan
[3] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan
[4] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan
[5] RIKEN, Wako, Saitama 3510198, Japan
[6] High Energy Accelerator Res Org, Inst Particle & Nucl Study, Tsukuba, Ibaraki 3050801, Japan
[7] Chung Ang Univ, Dept Phys, Seoul 156756, South Korea
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.90.062501
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The reaction rate of the stellar reaction C-13(alpha,n)O-16, which is currently considered to be the main neutron source for the slow (s) process at low energies, has been rederived using the direct alpha-transfer reaction C-13(Li-6,d)O-17 leading to the subthreshold state at 6.356 MeV in O-17. The contribution of the subthreshold state is found to be much smaller than the currently accepted predictions for the main neutron source of the s process, indicating less of a role of this reaction as the neutron source for the s-process scenario in low-mass stars at the asymptotic giant branch.
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页数：4
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