エキシマレーザにより生成した高圧アルゴンプラズマの形状に関する研究

Abstract

When a XeCl excimer laser was focused in the high-pressure argon gas up to 150atm, the plasma developed not only backward but also forward, which differed from one produced by the visible laser. The forward development of the high-pressure laser plasma was observed at the first time. The plasma shape was measured. The radius of the forward plasma was smaller than that of the focal spot, and the backward radius was the same as the light cone. The spherical aberration did not influence to the forward plasma development. It was found that the shape of plasma consisted of the two different cones with the large vertical angle and the small one.