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颜胜权, 李志宏, 王友宝, K. Nishio, H. Maki, 苏俊, 李云居, I. Nishinaka, K. Hirose, 韩银录, 郭冰, 曾晟, 连钢, 陈永寿, 柳卫平. 95Zr(n,γ)96Zr的间接测量[J]. 原子核物理评论, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
引用本文: 颜胜权, 李志宏, 王友宝, K. Nishio, H. Maki, 苏俊, 李云居, I. Nishinaka, K. Hirose, 韩银录, 郭冰, 曾晟, 连钢, 陈永寿, 柳卫平. 95Zr(n,γ)96Zr的间接测量[J]. 原子核物理评论, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
YAN Shengquan, LI Zhihong, WANG Youbao, K. Nishio, H. Maki, SU Jun, LI Yunju, I. Nishinaka, K. Hirose, HAN Yinlu, GUO Bing, ZENG Sheng, LIAN Gang, CHEN Yongshou, LIU Weiping. Indirect Measurement of 95Zr(n, γ)96Zr[J]. Nuclear Physics Review, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
Citation: YAN Shengquan, LI Zhihong, WANG Youbao, K. Nishio, H. Maki, SU Jun, LI Yunju, I. Nishinaka, K. Hirose, HAN Yinlu, GUO Bing, ZENG Sheng, LIAN Gang, CHEN Yongshou, LIU Weiping. Indirect Measurement of 95Zr(n, γ)96Zr[J]. Nuclear Physics Review, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420

95Zr(n,γ)96Zr的间接测量

doi: 10.11804/NuclPhysRev.34.03.420
基金项目: 国家重点研发计划资助项目(2016YFA0400502);国家自然科学基金资助项目(11375269,11490560,11321064);国家重点基础研究发展计划(2013CB834406)
详细信息
    作者简介:

    颜胜权(1977-),男,四川荣县人,副研究员,硕士,从事核天体物理实验测量研究;E-mail:yanye7703@sina.com

  • 中图分类号: O571.1

Indirect Measurement of 95Zr(n, γ)96Zr

Funds: National Key Research and Development Plan(2016YFA0400502); National Natural Science Foundation of China (11375269, 11490560, 11321064); National Basic Research Program of China(973 Program)(2013CB834406)
  • 摘要: 95Zr(n,γ)96Zr是稳定燃烧的恒星中合成96Zr的唯一途径,对研究恒星演化和重元素合成具有重要的意义。由于95Zr半衰期为64 d,直接测量95Zr(n,γ)96Zr截面极为困难,因此,本工作采用替代比率法间接测量95Zr(n,γ)96Zr截面。本工作测量了94Zr(18O,16Oγ)96Zr和90Zr(18O,16Oγ)92Zr反应,得到了复合核96Zr*90Zr*衰变到γ道的几率比,并利用截面已知的91Zr(n,γ)92Zr截面乘以实验所测比率,得到了En=0~8 MeV能区的95Zr(n,γ)96Zr中子俘获截面。


    95Zr(n, γ)96Zr cross section is important for the study of stellar evolution and heavy elements nucleosynthesis because the reaction is the only way to produce the 96Zr in Asymptotic giant branch stars. The direct measurement of 95Zr(n, γ)96Zr is very difficult due to the short half-life of 95Zr, 64 days. The surrogate ratio method was carried out to measure 95Zr(n, γ)96Zr cross sections. We measured the 94Zr(18O, 16Oγ)96Zr and 90Zr(18O, 16Oγ)92Zr reactions and obtained the γ-decay probability ratio of compound nuclei 96Zr* and 92Zr*. The 95Zr(n, γ)96Zr cross section is determined by the obtained ratio multiplying the known 91Zr(n, γ)92Zr cross section at En=0~8 MeV.
  • [1] NICOLUSSI G K, PELLIN M J, LEWIS ROY S, et al. ApJ, 1998, 504:492.
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    [6] YAN S Q, LI Z H, WANG Y B, et al. Phys Rev C, 2016, 94:015804.
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出版历程
  • 收稿日期:  2016-11-21
  • 修回日期:  2017-04-13
  • 刊出日期:  2017-07-18

95Zr(n,γ)96Zr的间接测量

doi: 10.11804/NuclPhysRev.34.03.420
    基金项目:  国家重点研发计划资助项目(2016YFA0400502);国家自然科学基金资助项目(11375269,11490560,11321064);国家重点基础研究发展计划(2013CB834406)
    作者简介:

    颜胜权(1977-),男,四川荣县人,副研究员,硕士,从事核天体物理实验测量研究;E-mail:yanye7703@sina.com

  • 中图分类号: O571.1

摘要: 95Zr(n,γ)96Zr是稳定燃烧的恒星中合成96Zr的唯一途径,对研究恒星演化和重元素合成具有重要的意义。由于95Zr半衰期为64 d,直接测量95Zr(n,γ)96Zr截面极为困难,因此,本工作采用替代比率法间接测量95Zr(n,γ)96Zr截面。本工作测量了94Zr(18O,16Oγ)96Zr和90Zr(18O,16Oγ)92Zr反应,得到了复合核96Zr*90Zr*衰变到γ道的几率比,并利用截面已知的91Zr(n,γ)92Zr截面乘以实验所测比率,得到了En=0~8 MeV能区的95Zr(n,γ)96Zr中子俘获截面。


95Zr(n, γ)96Zr cross section is important for the study of stellar evolution and heavy elements nucleosynthesis because the reaction is the only way to produce the 96Zr in Asymptotic giant branch stars. The direct measurement of 95Zr(n, γ)96Zr is very difficult due to the short half-life of 95Zr, 64 days. The surrogate ratio method was carried out to measure 95Zr(n, γ)96Zr cross sections. We measured the 94Zr(18O, 16Oγ)96Zr and 90Zr(18O, 16Oγ)92Zr reactions and obtained the γ-decay probability ratio of compound nuclei 96Zr* and 92Zr*. The 95Zr(n, γ)96Zr cross section is determined by the obtained ratio multiplying the known 91Zr(n, γ)92Zr cross section at En=0~8 MeV.

English Abstract

颜胜权, 李志宏, 王友宝, K. Nishio, H. Maki, 苏俊, 李云居, I. Nishinaka, K. Hirose, 韩银录, 郭冰, 曾晟, 连钢, 陈永寿, 柳卫平. 95Zr(n,γ)96Zr的间接测量[J]. 原子核物理评论, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
引用本文: 颜胜权, 李志宏, 王友宝, K. Nishio, H. Maki, 苏俊, 李云居, I. Nishinaka, K. Hirose, 韩银录, 郭冰, 曾晟, 连钢, 陈永寿, 柳卫平. 95Zr(n,γ)96Zr的间接测量[J]. 原子核物理评论, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
YAN Shengquan, LI Zhihong, WANG Youbao, K. Nishio, H. Maki, SU Jun, LI Yunju, I. Nishinaka, K. Hirose, HAN Yinlu, GUO Bing, ZENG Sheng, LIAN Gang, CHEN Yongshou, LIU Weiping. Indirect Measurement of 95Zr(n, γ)96Zr[J]. Nuclear Physics Review, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
Citation: YAN Shengquan, LI Zhihong, WANG Youbao, K. Nishio, H. Maki, SU Jun, LI Yunju, I. Nishinaka, K. Hirose, HAN Yinlu, GUO Bing, ZENG Sheng, LIAN Gang, CHEN Yongshou, LIU Weiping. Indirect Measurement of 95Zr(n, γ)96Zr[J]. Nuclear Physics Review, 2017, 34(3): 420-424. doi: 10.11804/NuclPhysRev.34.03.420
参考文献 (18)

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