K-shell x-ray emission enhancement via self-guided propagation of intense laser pulses in Ar clusters.
K-shell x-ray emission enhancement via self-guided propagation of intense laser pulses in Ar clusters.
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DOI：
10.1364/oe.17.016379
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发表时间：
2009-09
期刊：
影响因子：
3.8
通讯作者：
Feng Liu;Li-Ming Chen;Xiao-Xuan Lin;Feng Liu;Jinglong Ma;Rundong Li;Yu-Tong Li;Zhao-Hua Wang-Zhao-Hua
中科院分区：
文献类型：
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作者：
Feng Liu;Li-Ming Chen;Xiao-Xuan Lin;Feng Liu;Jinglong Ma;Rundong Li;Yu-Tong Li;Zhao-Hua Wang-Zhao-Hua
研究了110 mJ 55 fs强激光脉冲辐照Ar团簇产生的3 keV K壳层X射线。通过将喷嘴移动远离激光脉冲的焦点来优化X射线通量。当喷嘴位移为2 mm时，探测束观察到一个长的等离子体通道，4pi中K壳层X射线光子的总通量达到最大值4.5 × 10（9）光子/激发，转换效率为2.5 × 10（-5）。
K-shell x-ray at about 3 keV emitted from Ar clusters irradiated by 110 mJ 55 fs intense laser pulses is studied. The x-ray flux is optimized by moving the nozzle away from the focus of the laser pulse. The total flux of K-shell x-ray photons in 4pi reaches a maximum of 4.5x10(9) photons/shot with a conversion efficiency of 2.5x10(-5) when the nozzle displacement is 2 mm and a long plasma channel is observed by a probe beam.