| 聚变反应时间历程的双峰结构测量 |
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| 引用本文： | 王峰,彭晓世,康洞国,谷建法,刘慎业,刘永刚,徐涛,陈铭,梅雨.聚变反应时间历程的双峰结构测量[J].强激光与粒子束,2013,25(3):657-661. |
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| 作者姓名： | 王峰 彭晓世 康洞国 谷建法 刘慎业 刘永刚 徐涛 陈铭 梅雨 |
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| 作者单位： | 1.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900; |
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| 基金项目： | 国家自然科学基金项目(10805041);等离子体物理重点实验室基金项目(9140C6801021001);中国工程物理研究院科学技术发展基金项目(2011B0102020) |
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| 摘 要： | 利用新研制的聚变反应速率测量系统，在神光Ⅲ原型装置上测量了间接驱动时充DT气体的玻璃球壳内爆靶丸的聚变反应速率的时间历程，获得了DT中子产额约为1010时的聚变反应速率随时间的变化过程，发现了聚变中子发射在时间上的双峰结构。利用辐射流体程序对聚变中子在时间上的双峰结构进行了数值模拟，发现双峰结构分别由冲击压缩过程和惯性压缩过程产生，靶丸壳层厚度不同时产生的聚变中子发射双峰强度比变化可能是由靶丸的初始表面调制度不同所致。通过理论模拟与实验结果的对比，验证了中子聚变反应历程的双峰结构。
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| 关 键 词： | 惯性约束聚变 聚变反应速率 双峰结构 热核反应 |
| 收稿时间： | 2012-05-03 |
Measurement of two-peak structure in fusion reaction history |
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| Wang Feng,Peng Xiaoshi,Kang Dongguo,Gu Jianfa,Liu Shenye,Liu Yonggang,Xu Tao,Chen Ming,Mei Yu.Measurement of two-peak structure in fusion reaction history[J].High Power Laser and Particle Beams,2013,25(3):657-661. |
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| Authors: | Wang Feng Peng Xiaoshi Kang Dongguo Gu Jianfa Liu Shenye Liu Yonggang Xu Tao Chen Ming Mei Yu |
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| Affiliation: | 1.Research Center of Laser Fusion,CAEP,P.O.Box 919-986,Mianyang 621900,China;2.Institute of Applied Physics and Computational Mathematics,Beijing 100088,China |
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| Abstract: | The relationship of the roughness degree of ablation shell and the two peaks of fusion reaction rate was analyzed. We developed a system for fusion reaction history measurement with high temporal resolution, and applied this system to the SG-Ⅲ prototype for measuring fusion reaction rate. Fusion reaction rate history was measured for the first time with deuterium-tritium filled targets under neutron yields of about 1010. We anatomized possible influence factors during fusion reaction rates measuring. The two peaks of reaction rate can be obtained from the simulation results, and have been confirmed with the experimental results. It is found that neutrons in our experiment are generated by the first peak which is called the shock peak. The simulation and experimental results can provide strong technical support for the research on fusion reaction rate in inertial confinement fusion. |
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