In general , the lens chromatic aberration and the group velocity dispersion lead to a broadening in the temporal and spatial intensity distributions at the focal plane and a decrease o 一般說來,透鏡色差和群速度色散會使焦平面上脈沖光束的時間、空間光強分布展寬,峰值光強降低。
The plasma density scale length given by combination of ponder - motive force and thermal pressure is suitable for vh . considering the spatial intensity distribution in focal spot , the ra may give some contribution in some place X射線是各向同性的, x射線產額隨入射激光強度的降低而減小,當強度小于10 ~ ( 15 ) w cm ~ 2時,不再有硬x射線產生。