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Indirect Measurement of Astrophysical 13^C（a, n）^16O S-Factors
  • ISSN号：1009-0630
  • 期刊名称：《等离子体科学与技术：英文版》
  • 时间：0
  • 分类：O571.4[理学—粒子物理与原子核物理;理学—物理] P14[天文地球—天体物理;天文地球—天文学]
  • 作者机构：[1]China Institute of Atomic Energy, Beijing 102413, China, [2]School of Physics and State Key Laboratory of Nuclear Physics and Technology,Peking University, Beiiing 100871, China
  • 相关基金：supported by National Basic Research Program of China （No. 2007CB815003）, National Natural Science Foundation of China（Nos. 10705053, 11021504, 10720101076, 10735100 and 10975193）
作者： 郭冰[1], 李志宏[1], 李云居[1], 苏俊[1], 白希祥[1], 陈永寿[1], 樊启文[1], 金孙均[1], 李二涛[1], 李志常[1], 连钢[1], 刘鑫[1], 刘建成[1], 舒能川[1], 王宝祥[1], 王友宝[1], 颜胜权[1], 曾晟[1], 柳卫平[1], 庞丹阳[2]
关键词： 天体物理学, S-因子, 间接测量, 转移反应, S-过程, 临界状态, 中子源, 次临界, transfer reaction, elastic scattering, s-process
中文摘要：

The 13C(α,n)16O 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 α spectroscopic factor of the 1/2+ subthreshold state in 17O (Ex=6.356 MeV) by using the 13C(11B,7Li)17O α transfer reaction. Our result confirms that the 1/2+ subthreshold resonance is dominant for the 13C(α,n)16O reaction at low energies of astrophysical interest.

英文摘要：

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.

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期刊信息
  • 《等离子体科学与技术：英文版》
  • 主管单位:中国科学院 中国科协
  • 主办单位:中国科学院等离子体物理研究所 中国力学学会
  • 主编：万元熙、谢纪康
  • 地址：合肥市1126信箱
  • 邮编：230031
  • 邮箱：pst@ipp.ac.cn
  • 电话：0551-5591617 5591388
  • 国际标准刊号：ISSN：1009-0630
  • 国内统一刊号：ISSN：34-1187/TL
  • 邮发代号:
  • 获奖情况:
  • 国内外数据库收录:
  • 美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,美国科学引文索引（扩展库）,英国科学文摘数据库
  • 被引量:89