Picosecond dynamics of a hot solid-density plasma
Picosecond dynamics of a hot solid-density plasma
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热固体密度等离子体的皮秒动力学
DOI：
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发表时间：
1996
期刊：
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通讯作者：
O. Peyrusse
中科院分区：
文献类型：
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作者：
J. Kieffer;Z. Jiang;A. Ikhlef;C. Cote;O. Peyrusse
我们提出了一项实验研究，研究由极高对比度激光脉冲（主脉冲与预脉冲强度比，∼1010）与强度高达 1018 W/cm2 的固体相互作用产生的热近固体密度等离子体的动力学。时间分辨率为 1.6 ps 的时间分辨光谱用于跟踪谱线展宽、电离和重组时间历程。结果表明，即使在如此高的激光强度下，热线发射仍然可以非常短，并且 Kα 辐射令人惊讶地长。
We present an experimental study of the dynamics of a hot near-solid-density plasma generated by the interaction of a very-high-contrast laser pulse (main-pulse-to-prepulse intensity ratio, ∼1010) with solids at intensities of as high as 1018 W/cm2. Time-resolved spectroscopy with a temporal resolution of 1.6 ps is used to follow line broadening, ionization, and recombination time histories. It is shown that thermal line emission can still be very short even at these high laser intensities and that the Kα radiation is surprisingly long.