1. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China 2. Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900, China 3. Institute of High Pressure & High Temperature Physics, Xinan Jiaotong University, Chengdu 610031, China
Abstract：Driving a copper projectile to impact a cryo-target made of aluminous alloy at the speed of 2.21 km·s-1 with a two stage light gas gun, a proper one dimensional shockwave with a speed of 18.76 km·s-1 was generated and directly acted on a uniform liquid in target, which was condensed by proportional gaseous carbon monoxide and nitrogen. At the measurement of Hugoniots, the full linear spectrum entirely dissociated with the plasma under the shock pressure of 33.5 GPa was caught by the use of intensified charge coupled device and accurate spectrographic technology. From the analysis of the spectrum, the authors know that the transient spectrograph with six channels can be used to measure and record the course of shock compression-irradiancy reliably, and the emitted spectral lines of shock compressed products indicated that the thermal dissociation and phase transition had occurred in homogeneous liquid of CO-N2. Furthermore, comparing the spectral intensity of lower central wavelength with that of higher, the fact of stronger intensity of 488 nm also validates that changes from “optic thin” to “optic thick” exist indeed in dense hydrocarbon liquid acted on by shock pressure.
[1] JING Fu-qian(经福谦). Introduction of Experimental Equation of State(实验物态方程导引). Beijing: Science Press(北京: 科学出版社)，1999. 81. [2] Schemidt S C, Moore D S, Shaw M. Journal of Chem. Phys., 1993, 98(12): 9380. [3] XU Gang(徐 刚). Chinese Journal of Atomic and Molecular Physics(原子与分子物理学报)，1997，14(2)：339. [4] TANG Jing-you, GU Yan, PENG Qi-xian(唐敬友, 谷 岩, 彭其先). Chinese Journal of High Pressure Physics(高压物理学报), 2003, 20, 17(3): 313. [5] SUN Yue, CHEN Xian-meng, CHEN Pan-sen(孙 悦, 陈先猛, 陈攀森). Chinese Journal of High Pressure Physics(高压物理学报), 1997, 11(2): 124. [6] SUN Yue, MENG Chuan-min, WU Guo-dong(孙 悦, 孟川民, 吴国栋). Chinese Journal of High Pressure Physics(高压物理学报), 2002, 16(3): 217. [7] SUN Yue, YANG Jin-wen, LI Qiao-yan(孙 悦, 杨金文, 李巧燕). Journal of Sichuan University·Natural Science Edition(四川大学学报·自然科学版), 2006, 43(1), 179. [8] QI Guan-rong, WANG Pu-feng, ZHOU Shao-xiang(漆贯荣, 王蒲凤, 周绍祥). Up to Date Common Use Data in Science(理科最新常用数据手册). Xi’an: Shaanxi People’s Press(西安：陕西人民出版社)，1983. 401. [9] Ciabini L, Gorelli F A, Santoro M, et al. Phys. Rev. B, 2005, 72: 094108. [10] WANG Fan-hou, JING Fu-qian(王藩侯, 经福谦). Chinese Journal of Atomic and Molecular Physics(原子与分子物理学报), 2002，19(4): 442. [11] Thiel M V, Ree F H. High Temperatures & High Pressures, 1992, 24: 195. [12] YUAN Bao-hui, TIAN Qing-zheng, ZOU Wen-hao(袁宝慧, 田清政, 邹文豪). Acta Photonica Sinica(光子学报), 1998, 27(6)：564. [13] WANG Jin-gui(王金贵). Theorem and Technology of Light Gas Gun(气体炮原理及技术). Beijing: National Defence Industrial Press(北京: 国防工业出版社)，1999. 155. [14] PENG Qi-xian, HU Shao-lou, TANG Jing-you(彭其先, 胡绍楼, 唐敬友). Journal of Optoelectronics·Laser(光电子·激光), 2001, 12(10): 1051. [15] LI Ping, HU Dong, YUAN Chang-ying，et al(李 萍, 胡 栋, 袁长迎，等). Spectroscopy and Spectral Analysis(光谱学与光谱分析)，2006，26(9): 1569. [16] Robinson J W. Handbook of Spectroscopy (V1). USA：CRC Press, 1930.
