Indirect Measurement of Astrophysical ^(13)C(α,n)^(16)O S-Factors

Indirect Measurement of Astrophysical ^(13)C(α,n)^(16)O S-Factors

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摘要 The 13^C（a, n）160 reaction is believed to be the main neutron source reaction for the s-process in asymptotic giant branch （AGB） stars. The astrophysical S-factors of this reaction have been determined based on an evaluation of the a spectroscopic factor of the 1/2＋ subthreshold state in 17^O （Ex = 6.356 MeV） by using the 13^C（11^B, 7^Li）17^O a transfer reaction. Our result confirms that the 1/2＋ subthreshold resonance is dominant for the 13^C（a, n）16^O reaction at low energies of astrophysical interest. The 13^C（a, n）160 reaction is believed to be the main neutron source reaction for the s-process in asymptotic giant branch （AGB） stars. The astrophysical S-factors of this reaction have been determined based on an evaluation of the a spectroscopic factor of the 1/2＋ subthreshold state in 17^O （Ex = 6.356 MeV） by using the 13^C（11^B, 7^Li）17^O a transfer reaction. Our result confirms that the 1/2＋ subthreshold resonance is dominant for the 13^C（a, n）16^O reaction at low energies of astrophysical interest.

机构地区 China Institute of Atomic Energy School of Physics and State Key Laboratory of Nuclear Physics and Technology Center for Stellar and Planetary Astrophysics

出处《Plasma Science and Technology》 SCIE EI CAS CSCD 2012年第5期357-359,共3页 等离子体科学和技术（英文版）

基金 supported by National Basic Research Program of China (No.2007CB815003) National Natural Science Foundation of China(Nos.10705053,11021504,10720101076,10735100 and 10975193)

关键词 transfer reaction elastic scattering S-PROCESS transfer reaction, elastic scattering, s-process

分类号 P14 [天文地球—天体物理]

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Indirect Measurement of Astrophysical ^(13)C(α,n)^(16)O S-Factors

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