多次冲击波压缩DT冰理论研究

 冲击波压缩DT是ICF内爆过程中的主要熵增因素，如何用有限数目的时间整形冲击波实现近等熵压缩过程是优化点火靶设计的关键。利用理想气体和实际DT状态方程，计算系列冲击波压缩后的熵增和密度变化，分析表明,当第一个冲击波压强不大于0.1 TPa，后续再用3个冲击波达到10 TPa，总熵增不影响点火靶DT压缩性能,增加冲击波个数对DT熵增和压缩度改善效果很小。

Analysis of DT ice compression with a series of shock waves

Shock compression is the main source of entropy changes in ICF implosions. How to realize a nearly isentropic implosion with a series of shock waves after pulse shaping will be crucial for the optimization design of ignition targets. With the ideal and realistic equtions of state, entropy and density changes of DT with a series of shock compressions are calculated. With an initial pressure of 0.1 TPa which is then proceeded to 10 TPa with three consecutive shocks, the compressibility of DT will not be affected by the corresponding entropy change. It is found that increasing the number of shocks has a small effect on entropy change and compression ratio of DT.