| 太帕压力下声速连续测量的高精度靶制备 |
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| 引用本文： | 张红平,张黎,罗斌强,李建明,王峰,谭福利,李牧.太帕压力下声速连续测量的高精度靶制备[J].高压物理学报,2020(3):64-70. |
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| 作者姓名： | 张红平 张黎 罗斌强 李建明 王峰 谭福利 李牧 |
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| 作者单位： | 深圳技术大学大数据与互联网学院;中国工程物理研究院流体物理研究所;中国工程物理研究院激光聚变研究中心;深圳技术大学先进材料测试技术研究中心 |
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| 基金项目： | 国家自然科学基金(11972330,11974321,11772310,11472255);国防基础科研科学挑战专题(TZ2016001)。 |
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| 摘 要： | 声速反映小应力扰动在介质中的传播特征,是材料在一定热力学状态下的重要属性,是研究材料状态方程、相变(包括固-固相变)以及物质构成等的重要手段。超高压声速测量对于地球和行星物理、惯性约束聚变以及第一性原理的建模等多个物理研究领域具有重要意义。基于侧向稀疏方法连续测量冲击绝热线上的体声速是获取超高压声速的全新方法。该方法对靶的制备要求很高。为此,详细介绍了基于该方法的靶的制备要求,探讨了制备工艺、测量技术以及影响实验精度的主要因素,并根据"神光Ⅲ"原型装置的实验结果进行相应的分析。
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| 关 键 词： | 声速 高压 雨贡纽 靶物理 |
High Precision Targets Fabrication for Sound Velocity Measurements in Terapascal Pressure |
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| ZHANG Hongping,ZHANG Li,LUO Binqiang,LI Jianming,WANG Feng,TAN Fuli,LI Mu.High Precision Targets Fabrication for Sound Velocity Measurements in Terapascal Pressure[J].Chinese Journal of High Pressure Physics,2020(3):64-70. |
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| Authors: | ZHANG Hongping ZHANG Li LUO Binqiang LI Jianming WANG Feng TAN Fuli LI Mu |
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| Institution: | (College of Big Data and Internet,Shenzhen Technology University,Shenzhen 518118,Guangdong,China;Institute of Fluid Physic,CAEP,Mianyang 621999,Sichuan,China;Research Center of Laser Fusion,CAEP,Mianyang 621999,Sichuan,China;Center for Advanced Material Diagnostic Technology,Shenzhen Technology University,Shenzhen 518118,Guangdong,China) |
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| Abstract: | Sound velocity is an intrinsic property of material,which is equal to the spread velocity of weak perturbation.Measurements of sound velocity are very important for the research of equation of state,phase transition and component of matter at extreme conditions.A continuous side-release method which can work to terapascal pressure was newly developed.In this paper,we described details of high precision targets fabrication of this method,including requirements,methodology and detection.Also,key factors which lead to fatal issues are analyzed for better signals and reliability.Experimental results on SGIII prototype laser facility are shown to validate the technology of targets fabrication. |
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| Keywords: | sound velocity high pressure Hugoniot curve target physics |
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