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李二涛, 李志宏, 李云居, 郭冰, 颜胜权, 苏俊, 曾晟, 王友宝, 连钢, 刘建成, 甘林, 樊启文, 李鑫悦, 苏毅, 马田丽, 罗奇, 胡世鹏, 郝昕, 孙慧斌, 谌阳平, 周勇, 韩治宇, 裴常进, 柳卫平. 10Be中子谱因子的实验研究[J]. 原子核物理评论, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
引用本文: 李二涛, 李志宏, 李云居, 郭冰, 颜胜权, 苏俊, 曾晟, 王友宝, 连钢, 刘建成, 甘林, 樊启文, 李鑫悦, 苏毅, 马田丽, 罗奇, 胡世鹏, 郝昕, 孙慧斌, 谌阳平, 周勇, 韩治宇, 裴常进, 柳卫平. 10Be中子谱因子的实验研究[J]. 原子核物理评论, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
LI Ertao, LI Zhihong, LI Yunju, GUO Bing, YAN Shengquan, SU Jun, ZENG Sheng, WANG Youbao, LIAN Gang, LIU Jiancheng, GAN Lin, FAN Qiwen, LI Xinyue, SU Yi, MA Tianli, LUO Qi, HU Shipeng, HAO Xin, SUN Huibin, SHEN Yangping, ZHOU Yong, HAN Zhiyu, PEI Changjin, LIU Weiping. Measurement of the Neutron Spectroscopic Factor in 10Be[J]. Nuclear Physics Review, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
Citation: LI Ertao, LI Zhihong, LI Yunju, GUO Bing, YAN Shengquan, SU Jun, ZENG Sheng, WANG Youbao, LIAN Gang, LIU Jiancheng, GAN Lin, FAN Qiwen, LI Xinyue, SU Yi, MA Tianli, LUO Qi, HU Shipeng, HAO Xin, SUN Huibin, SHEN Yangping, ZHOU Yong, HAN Zhiyu, PEI Changjin, LIU Weiping. Measurement of the Neutron Spectroscopic Factor in 10Be[J]. Nuclear Physics Review, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446

10Be中子谱因子的实验研究

doi: 10.11804/NuclPhysRev.34.03.446
基金项目: 国家自然科学基金资助项目(11505117,11490560,11475264,11321064,11375269,11605114);国家重点基础研究发展计划(973计划)项目(2013CB834406);国家重点研发计划项目(2016YFA0400502);广东省自然科学基金资助项目(2015A030310012,2016A030310042)
详细信息
    作者简介:

    李二涛(1981-),男,河南驻马店人,讲师,博士,从事原子核与粒子物理研究,E-mail:let@szu.edu.cn

  • 中图分类号: O571.41+6

Measurement of the Neutron Spectroscopic Factor in 10Be

Funds: National Natural Science Foundation of China (11505117, 11490560, 11475264, 11321064, 11375269, 11605114); National Basic Research Program of China (973 Program) (2013CB834406); National key Research and Development Project of China (2016YFA0400502); Natural Science Foundation of Guangdong Province (2015A030310012, 2016A030310042)
  • 摘要: 核谱因子描述了单粒子轨道中核子的占有状态,在核结构和核天体物理中有重要的应用。目前国际上10Be中子谱因子的研究结果存在3倍左右的差异。本实验利用中国原子能科学研究院HI-13串列加速器的高灵敏度Q3D磁谱仪,对13C(9Be,10Be)12C反应角分布进行了精确测量。通过实验数据和扭曲波玻恩近似(DWBA)计算结果进行比较,导出了10Be的中子谱因子。该结果与转动不变壳模型理论及曾敏尔等的评价结果基本一致。利用该结果可以得到9Be(n,γ)10Be的天体物理反应率,评价该反应在相关天体环境中对CNO循环种子核12C的影响,为核结构和核天体物理提供可靠数据。


    Spectroscopic factor describes the overlap between the initial and final states and gives some information on the occupancy of a given single-particle orbiting around nuclear. It plays an important role in a variety of topics on nuclear structure and nuclear astrophysics. Nowadays, several experiments have been performed to study the neutron spectroscopic factor of 10Be, but the results have a big difference with each other. In order to clarify this discrepancy, new measurement is highly needed. In this work, the angular distribution of 13C(9Be,10Be)12C reaction was measured at the Q3D magnetic spectrometer of the HI-13 tandem accelerator, China Institute of Atomic Energy, Beijing. And then, the neutron spectroscopic factor of 10Be was derived by normalizing the calculational differential cross-sections with the distorted-wave Born approximation to the experimental data. The present value is in good agreement with that obtained by Tsang et al. and also in good agreement with that derived from translationary invariant shell model calculation. One can use this result to calculate the 9Be(n, γ)10Be reaction rates and calculate its influence to the production of 12C.
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    [15] LIU X D. The study of (p, d) reactions on 13C, 11B, and 10Be in inverse kinematics[D]. Michigan State University, 2005.
    [16] KEMPER K W, MOORE G E, PUIGH R J, et al. Phys Rev C, 1997, 15:1726.
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出版历程
  • 收稿日期:  2016-11-20
  • 修回日期:  2017-03-30
  • 刊出日期:  2017-07-18

10Be中子谱因子的实验研究

doi: 10.11804/NuclPhysRev.34.03.446
    基金项目:  国家自然科学基金资助项目(11505117,11490560,11475264,11321064,11375269,11605114);国家重点基础研究发展计划(973计划)项目(2013CB834406);国家重点研发计划项目(2016YFA0400502);广东省自然科学基金资助项目(2015A030310012,2016A030310042)
    作者简介:

    李二涛(1981-),男,河南驻马店人,讲师,博士,从事原子核与粒子物理研究,E-mail:let@szu.edu.cn

  • 中图分类号: O571.41+6

摘要: 核谱因子描述了单粒子轨道中核子的占有状态,在核结构和核天体物理中有重要的应用。目前国际上10Be中子谱因子的研究结果存在3倍左右的差异。本实验利用中国原子能科学研究院HI-13串列加速器的高灵敏度Q3D磁谱仪,对13C(9Be,10Be)12C反应角分布进行了精确测量。通过实验数据和扭曲波玻恩近似(DWBA)计算结果进行比较,导出了10Be的中子谱因子。该结果与转动不变壳模型理论及曾敏尔等的评价结果基本一致。利用该结果可以得到9Be(n,γ)10Be的天体物理反应率,评价该反应在相关天体环境中对CNO循环种子核12C的影响,为核结构和核天体物理提供可靠数据。


Spectroscopic factor describes the overlap between the initial and final states and gives some information on the occupancy of a given single-particle orbiting around nuclear. It plays an important role in a variety of topics on nuclear structure and nuclear astrophysics. Nowadays, several experiments have been performed to study the neutron spectroscopic factor of 10Be, but the results have a big difference with each other. In order to clarify this discrepancy, new measurement is highly needed. In this work, the angular distribution of 13C(9Be,10Be)12C reaction was measured at the Q3D magnetic spectrometer of the HI-13 tandem accelerator, China Institute of Atomic Energy, Beijing. And then, the neutron spectroscopic factor of 10Be was derived by normalizing the calculational differential cross-sections with the distorted-wave Born approximation to the experimental data. The present value is in good agreement with that obtained by Tsang et al. and also in good agreement with that derived from translationary invariant shell model calculation. One can use this result to calculate the 9Be(n, γ)10Be reaction rates and calculate its influence to the production of 12C.

English Abstract

李二涛, 李志宏, 李云居, 郭冰, 颜胜权, 苏俊, 曾晟, 王友宝, 连钢, 刘建成, 甘林, 樊启文, 李鑫悦, 苏毅, 马田丽, 罗奇, 胡世鹏, 郝昕, 孙慧斌, 谌阳平, 周勇, 韩治宇, 裴常进, 柳卫平. 10Be中子谱因子的实验研究[J]. 原子核物理评论, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
引用本文: 李二涛, 李志宏, 李云居, 郭冰, 颜胜权, 苏俊, 曾晟, 王友宝, 连钢, 刘建成, 甘林, 樊启文, 李鑫悦, 苏毅, 马田丽, 罗奇, 胡世鹏, 郝昕, 孙慧斌, 谌阳平, 周勇, 韩治宇, 裴常进, 柳卫平. 10Be中子谱因子的实验研究[J]. 原子核物理评论, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
LI Ertao, LI Zhihong, LI Yunju, GUO Bing, YAN Shengquan, SU Jun, ZENG Sheng, WANG Youbao, LIAN Gang, LIU Jiancheng, GAN Lin, FAN Qiwen, LI Xinyue, SU Yi, MA Tianli, LUO Qi, HU Shipeng, HAO Xin, SUN Huibin, SHEN Yangping, ZHOU Yong, HAN Zhiyu, PEI Changjin, LIU Weiping. Measurement of the Neutron Spectroscopic Factor in 10Be[J]. Nuclear Physics Review, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
Citation: LI Ertao, LI Zhihong, LI Yunju, GUO Bing, YAN Shengquan, SU Jun, ZENG Sheng, WANG Youbao, LIAN Gang, LIU Jiancheng, GAN Lin, FAN Qiwen, LI Xinyue, SU Yi, MA Tianli, LUO Qi, HU Shipeng, HAO Xin, SUN Huibin, SHEN Yangping, ZHOU Yong, HAN Zhiyu, PEI Changjin, LIU Weiping. Measurement of the Neutron Spectroscopic Factor in 10Be[J]. Nuclear Physics Review, 2017, 34(3): 446-449. doi: 10.11804/NuclPhysRev.34.03.446
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