Spectral dynamics of soft x-ray emission in dual laser-produced medium-Z plasma
Spectral dynamics of soft x-ray emission in dual laser-produced medium-Z plasma
复制标题
双激光产生的中 Z 等离子体中软 X 射线发射的光谱动力学
DOI：
10.1007/s00340-018-7061-3
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
T. Higashiguchi
中科院分区：
文献类型：
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作者：
H. Ohashi;H. Hara;G. Arai;T. Hatano;T. Ejima;C. Suzuki;S. Namba;A. Sasaki;M. Nishikino;G. O'Sullivan;T. Higashiguchi
激光产生的中元素等离子体源被认为是在实验室规模的水窗软X射线显微镜的生物样品在体内摄影成像的强有力的候选人。我们探讨了双激光产生的锆（Zr）等离子体在水窗软X射线光谱区的发射光谱的变化。在预激光脉冲和主激光脉冲之间的延迟时间为5 ns时，发射增强，并发现具有与没有任何预脉冲时非常相似的源尺寸。我们还研究了在较长的延迟时间观察到的排放减少，在碰撞辐射（CR）模型计算的吸收系数的上下文中。
Laser-produced medium element plasma sources are being considered as strong candidates for in vivo photographic imaging of biological samples in laboratory-scale water-window soft X-ray microscopes. We explored spectral changes in the emission from dual-laser-produced zirconium (Zr) plasmas in the water-window soft X-ray spectral region. The emission was enhanced at a delay time of 5 ns between the pre- and main-laser pulses and found to possess a source size ofvery similar to that obtained without any pre-pulse. We also investigated the decrease in emission observed at longer delay times, in the context of the collisional-radiative (CR) model-calculated absorption coefficient.