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激光产生温稠密物质的微观动力学过程及状态诊断

康冬冬 曾启昱 张珅 王小伟 戴佳钰

康冬冬, 曾启昱, 张珅, 等. 激光产生温稠密物质的微观动力学过程及状态诊断[J]. 强激光与粒子束, 2020, 32: 092006. doi: 10.11884/HPLPB202032.200121
引用本文: 康冬冬, 曾启昱, 张珅, 等. 激光产生温稠密物质的微观动力学过程及状态诊断[J]. 强激光与粒子束, 2020, 32: 092006. doi: 10.11884/HPLPB202032.200121
Kang Dongdong, Zeng Qiyu, Zhang Shen, et al. Dynamics and micro-structures in generation of warm dense matter using intense laser[J]. High Power Laser and Particle Beams, 2020, 32: 092006. doi: 10.11884/HPLPB202032.200121
Citation: Kang Dongdong, Zeng Qiyu, Zhang Shen, et al. Dynamics and micro-structures in generation of warm dense matter using intense laser[J]. High Power Laser and Particle Beams, 2020, 32: 092006. doi: 10.11884/HPLPB202032.200121

激光产生温稠密物质的微观动力学过程及状态诊断

doi: 10.11884/HPLPB202032.200121
基金项目: 国家重点研发计划项目(2017YFA0403200);科学挑战专题项目(TZ2016001);国家自然科学基金项目(11874424,11774429,11904401,U1830206)
详细信息
    作者简介:

    康冬冬(1984—),男,博士,副教授,从事高能量密度物理研究;ddkang@nudt.edu.cn

    通讯作者:

    戴佳钰(1981—),男,博士,教授,从事原子与分子物理和高能量密度物理研究;jydai@nudt.edu.cn

  • 中图分类号: O522+.2

Dynamics and micro-structures in generation of warm dense matter using intense laser

  • 摘要: 随着大型激光装置的建立和精密测量技术的发展,强激光与固体相互作用成为实验室产生温稠密物质的一个重要手段。温稠密物质的结构复杂性、瞬态性和非平衡性给理论建模和实验测量带来了巨大挑战。本文系统介绍了激光产生温稠密物质的实验手段和理论模拟方法方面的重要进展,分析了其中的电子激发动力学、电子-离子能量弛豫过程、离子动力学等物理过程,总结了温稠密物质状态诊断的实验技术和理论方法,并论述了激光产生温稠密物质的发展趋势。
  • 图  1  超快激光产生温稠密金的演化图[84]

    Figure  1.  Contour plots of parameters of the laser-generated warm dense gold[84]

    图  2  完全熔化时间与激光能量密度的关系[84]

    Figure  2.  Melting time as a function of energy density of laser[84]

    图  3  电子-离子温度随时间变化图[14]

    Figure  3.  Time evolution curves of electron and ion temperature[14]

    图  4  不同密度条件下电子温度和离子温度随时间的演化及不同理论方法和分子动力学模拟方法计算库伦对数比较[15]

    Figure  4.  Temporal evolution of ion and electron temperatures at different densities and Coulomb logarithms calculated from various theoretical methods and molecular dynamics simulations[15]

    图  5  四种温度密度状态氢的电导率和光吸收系数[66]以及不同温度下的氢的电导率随压强的变化关系[107]

    Figure  5.  Electrical conductivity and optical absorption coefficient for four state points of hydrogen[66]and electrical conductivity of hydrogen[107]

    图  6  高温下氢的电导率随温度的变化关系[108]

    Figure  6.  Electrical conductivity curves of hydrogen as a function of temperature[108]

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  • 收稿日期:  2020-05-13
  • 修回日期:  2020-07-15
  • 刊出日期:  2020-08-15

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