Open AccessExperimental measurement of liquid deuterium equation of state data
Author(s) -
Jia Guo,
Xiang Huang,
Zhenwei Xie,
Junjian Ye,
Zhiheng Fang,
Hua Shu,
Xiao Meng,
Zhou Hua-zhen,
Fu Si-Zu
Publication year - 2015
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.64.166401
Subject(s) - deuterium , reflector (photography) , equation of state , laser , range (aeronautics) , optics , materials science , power (physics) , residual , physics , computational physics , atomic physics , thermodynamics , computer science , light source , algorithm , composite material
An experimental research platform is built on Shenguang Ⅱ high power laser facility for obtaining the equation of state of liquid deuterium which has ability to control the temperature in a range of 12-300 K with an accuracy of ±0.03 K in 80 min. By optimizing the coating processing and cleaning the target, we solve the problems that the residual reflection is too high and serious frosting takes place on the window of the target at low temperature, then we obtain the experimental image with a good signal-to-noise ratio. By using the impedance matching method and velocity interferometer system for any reflector, experimental Hugoniot data of liquid deuterium are obtained at a pressure of about 60 GPa under the output condition of 3ω, 3 ns, 1200 J on Shenguang Ⅱ high power laser, which agrees well with the other published data in the same pressure regime and provides a good foundation for the next experimental study of liquid deuterium equation in 100 GPa pressure regime.