A Kind of Low Temperature Target System and Its Application in Shock Compression Studying of Liquid

This paper presents a kind of low temperature target system (temperature between 180～290 K) for the two-stage light gas gun and the technique for preparing molecular liquid samples of high purity at low temperatures. This technique was successfully used in preparing liquid CO2 samples. The shock compression results show that these samples totally meet the needs of shock wave experiments. We obtained seven shock-compression data points between 20～60 GPa. The results indicate that shock compressions induced a phase transition of liquid CO2 at 30 GPa.