论文部分内容阅读
研究了在最佳聚焦、预脉冲光束单独散焦及主、预脉冲同时散焦三种不同抽运激光聚焦条件下 ,预脉冲诱导的类氖铁和锌 J=0→ 1 X射线激光的近场像。本实验是在 Asterix IV碘激光装置上进行的 ,实验中主、预脉冲间的时间间隔为 5ns。实验发现在抽运激光主、预脉冲最佳聚焦条件下 ,X射线激光束在 2 .5cm长的线状等离子体输出端沿靶面 (垂直 )方向分裂成两束 ;在抽运预脉冲单独散焦条件下 ,仍然观察到这一分裂现象 ;但是当抽运主、预脉冲同时散焦时 ,这一分裂现象逐渐消失并获得了半宽度只有 40μm的非常窄的近场像。
The effects of pre-pulse-induced neon-like and zinc-like J = 0 → 1 X-ray lasers on the optimal focusing, pre-pulsed beam defocusing and main and pre-pulse defocusing simultaneously Field image. This experiment was carried out on an Asterix IV iodine laser device. The time interval between the main and pre-pulse in the experiment was 5 ns. It is found that under the conditions of pumping laser main and pre-pulse, the X-ray laser beam splits into two beams along the target (vertical) direction at 2.5 cm long linear plasma output. When the pump pre-pulse alone This splitting phenomenon was still observed under defocusing conditions; however, as the pusher and pre-pulse defocused at the same time, the splitting phenomenon gradually disappeared and a very narrow near-field image with a half-width of only 40 μm was obtained.