摘要
高功率激光辐照固体靶时,靶面上的激光辐射场基本上可以与原子内壳层的电子束缚场相比拟。激光迅速地将元素大部分电子剥离从而产生高温高密度的等离子体并发射丰富的软X射线谱。当激光功率进一步提高时,等离子体的离子将进一步地被剥离、处激发态上的电子可能进一步被激发到更高的能级上并发射更为丰富、更强的X射线。
X-ray emission enhancement from plasma produced by laser irradiation of concave target has been observed. In this paper,we report some new results on this phenomenon. Our experiment shows that the X-ray enhancement results mainly from an increase in the abundance of fluorine-like copper ions. In addition, the plasma jet is also observed. Both of the above phenomena disappear at low incident laser energy flux.
出处
《核聚变与等离子体物理》
CAS
CSCD
北大核心
1992年第4期245-247,共3页
Nuclear Fusion and Plasma Physics
