观测并分析了不同功率密度下,由于激光等离子体的空间电荷分离效应而产生的靶电压。100微微秒的1.06微米激光垂直入射到平面铝靶上,功率密度在2×1014～8×1014瓦/厘米2范围内,测得几千伏的靶电压,持续时间等于或小于毫微秒量级。

Measurement and analysis have been made on the target voltage induced by the effect of spatial charge seperation at various power densities. Target voltage of several KVs and the duration of or within a few nanoseconds have been measured when a 1.06μm laser beam (100 ps) is incident normally on an Al plane target at the power density ranging from 2 × 1014 to 8 × 1014W/cm2.