33GPa压力以下液氩冲击温度的实验测量  

Experimental Measurement for Shock Temperature of Liquid Argon up to 33GPa

作　　者：孟川民[1] 施尚春[1] 黄海军[1] 姬广富[1] 唐敬友[2] 杨向东[3] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900 [2]西南科技大学材料学院,四川绵阳621000 [3]四川大学原子与分子物理研究所,四川成都610065

出　　处：《高压物理学报》2006年第3期296-300,共5页Chinese Journal of High Pressure Physics

基　　金：国防科技重点实验室基金(00Ts75.21.3JW1905);中国工程物理研究院科学基金(20040102)

摘　　要：利用液氮冷靶系统制取液氩样品,以二级氢气炮作为加载工具,驱动飞片对液氩样品进行平面冲击压缩,实验测量了33 GPa冲击压力以下液氩的冲击温度。飞片速度由磁测速系统测量,冲击波速度和冲击温度用光纤耦合高温计系统测量,粒子速度采用阻抗匹配法计算得到。实验测得当冲击压力为33 GPa时,液氩的冲击温度超过10 000 K;而当冲击压力超过30 GPa时,冲击温度的上升趋势与理论计算相比明显变缓,该压力点正好与以前测得的冲击波速度-粒子速度曲线的拐点一致。Shock temperature of liquid argon has been measured under the shock pressure up to 33 GPa by employing the two-stage light gas gun. Impactor velocities were measured with electrical-magnetic induction system. Shock velocities and shock temperature of liquid argon were measured by using optical-fiber pyrometer. Mass velocities were obtained by mean of shock impendence matching method. The experimental data shows that shock temperature reach 10 000 K at 33 GPa shock pressure. Over 30 GPa shock pressure, shock temperature is lower compared with theoretical data. The experimental data also shows that the slope of shock temperature-shock volume curve begins to decrease over 30 GPa, which is the same shock pressure as the previously published shock Hugoniot curve.

关 键 词：液氩 冲击温度 光纤高温计 

分 类 号：O521.2[理学—高压高温物理]