エキシマレーザにより生成した高圧力プラズマの後方成長の解析

Abstract

When a high pressure argon gas was irradiated by a focused XeCl excimer laser light, a hot and dense plasma was produced. The dense plasma produced at the focal spot developed not only backward but also forward to the focal spot. The backward development process of plasma was analyzed. It was calculated on basis of the breakdown wave and the radiation supported shock wave mechanisms, and agreed with the experimental one. At high pressures, the breakdown wave is dominant, while the radiation supported shock wave is predominant at low pressure.