论文标题
平面激光诱导的碳激光产生的等离子体的荧光映射
Planar Laser Induced Fluorescence Mapping of a Carbon Laser Produced Plasma
论文作者
论文摘要
我们提出了通过激光诱导的荧光（LIF）在爆炸激光产生的血浆（LPP）上获得的离子速度分布曲线的测量值。通过使用可调的二极管激光器通过多普勒切换的吸收波长进行扫描，映射了所得碳离子速度分布的时空演化。通过消融激光器（1 Hz）的高重复速率能力促进了该数据的获取，这使得在短实验时间内积累了数千个激光射击。通过改变LIF光束的强度，我们能够在评估饱和度与非饱和度方案的背景下探索荧光功率对激光辐照度的影响。与其他离子速度分布测量技术相比，LIF光束的小型光束大小导致测量的高空间分辨率，而相机检测器的快速门控操作模式可以实现相关电子过渡的测量。
We present measurements of ion velocity distribution profiles obtained by laser induced fluorescence (LIF) on an explosive laser produced plasma (LPP). The spatio-temporal evolution of the resulting carbon ion velocity distribution was mapped by scanning through the Doppler-shifted absorption wavelengths using a tunable, diode-pumped laser. The acquisition of this data was facilitated by the high repetition rate capability of the ablation laser (1 Hz) which allowed the accumulation of thousand of laser shots in short experimental times. By varying the intensity of the LIF beam, we were able to explore the effects of fluorescence power against laser irradiance in the context of evaluating the saturation versus the non-saturation regime. The small beam size of the LIF beam led to high spatial resolution of the measurement compared to other ion velocity distribution measurement techniques, while the fast-gated operation mode of the camera detector enabled the measurement of the relevant electron transitions.
