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神光系列激光装置内爆烧蚀压缩过程测量

陈伯伦 杨正华 胡昕 夏立琼 陈忠靖 王鹏 韦敏习 黄天晅 蒋炜 晏骥 王峰 杨家敏

陈伯伦, 杨正华, 胡昕, 等. 神光系列激光装置内爆烧蚀压缩过程测量[J]. 强激光与粒子束, 2020, 32: 092010. doi: 10.11884/HPLPB202032.200111
引用本文: 陈伯伦, 杨正华, 胡昕, 等. 神光系列激光装置内爆烧蚀压缩过程测量[J]. 强激光与粒子束, 2020, 32: 092010. doi: 10.11884/HPLPB202032.200111
Chen Bolun, Yang Zhenghua, Hu Xin, et al. Implosion ablated convergence measurement on Shenguang laser facilities[J]. High Power Laser and Particle Beams, 2020, 32: 092010. doi: 10.11884/HPLPB202032.200111
Citation: Chen Bolun, Yang Zhenghua, Hu Xin, et al. Implosion ablated convergence measurement on Shenguang laser facilities[J]. High Power Laser and Particle Beams, 2020, 32: 092010. doi: 10.11884/HPLPB202032.200111

神光系列激光装置内爆烧蚀压缩过程测量

doi: 10.11884/HPLPB202032.200111
基金项目: 国家重点研发计划项目(2017YFA04033)
详细信息
    作者简介:

    陈伯伦(1979—),男,博士,副研究员,从事等离子体物理研究方向;blchen@mail.ustc.edu.cn

  • 中图分类号: O53

Implosion ablated convergence measurement on Shenguang laser facilities

  • 摘要: 间接驱动惯性约束聚变研究中,获得高内爆速度是实现点火,提升聚变增益的关键。通过对内爆烧蚀压缩过程的测量,能够获得内爆速度和剩余质量等内爆动力学重要的物理量,实现烧蚀层材料、厚度以及激光波形等参数的优化。近几年在神光系列装置上,演示了常规的应用狭缝成像的内爆烧蚀压缩过程测量技术,发展了基于球面弯晶成像的高分辨单能内爆烧蚀压缩过程测量技术。通过对球面弯晶成像系统设计的持续改进以及内爆烧蚀压缩过程测量技术的优化,结合实验室和系统原位标定结果,建立了高分辨的内爆压缩流线诊断技术,采用替代靶方式,实现内了爆速度不确定度2.1%的测量精度。
  • 图  1  内爆烧蚀压缩过程测量原理演示

    Figure  1.  Principle of the implosion ablated convergence measurement

    图  2  不同密度分布拟合结果与模拟结果对比

    Figure  2.  Comparison with the simulation density profile and different fitting density profiles

    图  3  神光系列装置上基于狭缝成像的内爆烧蚀压缩过程测量结果

    Figure  3.  Image of ablated convergence measurement based on slit radiography on Shenguang laser facilities

    图  4  神光系列装置上基于弯晶成像的内爆烧蚀压缩过程测量结果

    Figure  4.  Image of ablated convergence measurement based on spherically bent crystal imager on Shenguang laser facilities

    图  5  55 μm CH烧蚀层内爆靶与内层2.5 μm SiO2替代靶时透过率对比

    Figure  5.  Transmission comparison with 55 μm CH ablator and ablator subsituted by 2.5 μm SiO2 at inner interface

    图  6  替代靶设计内爆烧蚀压缩过程测量结果

    Figure  6.  Image of ablated convergence measurement with the subsituted capsule design

    图  7  内爆速度和剩余质量份额分析结果

    Figure  7.  Data analysis of the implosion ablated convergence measurement

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出版历程
  • 收稿日期:  2020-05-08
  • 修回日期:  2020-07-07
  • 刊出日期:  2020-08-15

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