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Calculation of Cross Section of Radiative Halo-Neutron Capture by 12C at Stellar Energy with the Asymptotic Normalization Coefficient Method |
WU Kai-Su1;CHEN Yong-Shou1,2;LIU Zu-Hua1;LIN Cheng-Jian1;ZHANG Huan-Qiao1 |
1China Institute of Atomic Energy, PO Box 275, Beijing 102413
2Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080 |
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Cite this article: |
WU Kai-Su, CHEN Yong-Shou, LIU Zu-Hua et al 2003 Chin. Phys. Lett. 20 49-52 |
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Abstract The cross section of the direct neutron capture reaction 12C(n,γ)13C(1/2+) is calculated with the asymptotic normalization coefficient method. The result is in good agreement with a recent experiment at low energy. An enormous enhancement of cross section is found for this direct neutron capture in which a p-wave neutron is captured into an 2s1/2 orbit with neutron halo. The possible effect of the neutron halo structure presented in this reaction on the s-process in astrophysics is discussed in general.
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Keywords:
24.50.+g
25.40.Lw
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Published: 01 January 2003
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