The ion and velocity structure in a laser produced plasma
The ion and velocity structure in a laser produced plasma
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DOI：
10.1088/0022-3700/5/10/028
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发表时间：
1972-10
期刊：
影响因子：
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通讯作者：
F. Irons;R. Mcwhirter;N. Peacock
中科院分区：
文献类型：
--
作者：
F. Irons;R. Mcwhirter;N. Peacock
本文用与靶法线成直角的时间分辨观测方法研究了真空中激光辐照聚乙烯薄膜所产生的等离子体的早期膨胀。谱线发射已被扫描，以给出离子物种碳I-VI的空间分布。所观察到的线是多普勒加宽的离子流运动，这种加宽已被解释为给速度作为一个函数的时间和距离的目标正常。对于一个离子种类（碳V）的重建已作出的离子轨迹。2-3*107厘米s-1的速度已推导出从多普勒频移平行于目标正常观察，并与以前的飞行时间测量。
The early expansion of the plasma produced by the laser irradiation of a polyethylene foil in vacuum has been studied by making time resolved observations at right angles to the target normal. Spectral line emission has been scanned to give the spatial distribution of the ion species carbon I-VI. The lines observed are Doppler broadened by the ion streaming motion, and this broadening has been interpreted to give velocity as a function of time and of distance from the target normal. For one ion species (carbon V) a reconstruction has been made of the ion trajectories. Velocities of 2-3*107 cm s-1 have been deduced from Doppler shifts observed parallel to the target normal and are in agreement with previous time of flight measurements.