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X射线汤姆孙散射在温稠密物质研究中的应用
引用本文:张小丁,张继彦,胡广月,郑坚. X射线汤姆孙散射在温稠密物质研究中的应用[J]. 物理, 2012, 41(5): 323-328
作者姓名:张小丁  张继彦  胡广月  郑坚
作者单位:1. 中国科学技术大学近代物理系中国科学院基础等离子体重点实验室,合肥230026/中国工程物理研究院激光聚变研究中心,绵阳621900
2. 中国工程物理研究院激光聚变研究中心,绵阳,621900
3. 中国科学技术大学近代物理系中国科学院基础等离子体重点实验室,合肥,230026
摘    要:温稠密物质(warm dense matter,WDM)是近年来兴起的一个前沿研究领域,它处于传统的凝聚态与等离子体状态之间的过渡状态.此状态下的物质广泛存在于宇宙和实验室中,如巨行星的内核、惯性约束聚变的内爆燃料等.然而人们对温稠密物质又是陌生的,因为传统的凝聚态和等离子体物理的理论和实验方法难以用于研究这样的物质状态.近几年,随着高功率激光装置以及诊断技术的发展,人们发展出X射线汤姆孙散射方法,对温稠密态物质开展了深入的研究,获得了重要的实验结果.

关 键 词:温稠密态物质  X射线汤姆孙散射  随机相位近似  动力学形状因子

X-ray Thomson scattering in warm dense matter
ZHANG Xiao-Ding,ZHANG Ji-Yan,HU Guang-Yue,ZHENG Jian. X-ray Thomson scattering in warm dense matter[J]. Physics, 2012, 41(5): 323-328
Authors:ZHANG Xiao-Ding  ZHANG Ji-Yan  HU Guang-Yue  ZHENG Jian
Affiliation:1(1 Modern Physics Department,University of Science and Technology of China,Key Laboratory of Basic Plasma Physics,Chinese Academy of Sciences,Hefei 230026,China)(2 Research Center of Laser Fusion,China Academy of Engineer Physics,Mianyang 621900,China)
Abstract:Warm dense matter exists throughout the universe,such as in the evolving surface layers of stars or in the inner cores of giant planets,and this state of matter influences our daily life deeply(as in the production and propagation of our Sun’s light).This extreme state of matter cannot be explained by traditional condensed matter physics or plasma physics,since it lies between the classical and quantum states.Recently,with the fast development of high power lasers,it has become possible to conduct experiments and test theories of the warm dense state.The existing theory developed for the corona plasma does not work well in this regime,but X-ray Thomson scattering has recently been successfully used in its diagnostics.A new theory is also required to analyze the experimental data.
Keywords:warm density matter  X-ray Thomson scattering  random phase approximation  dynamic structure factor
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