线状镁激光等离子体电子密度的空间分辨测量

Determination of Electron Density Profile or Mg Plasma Produced under Line-Focusing Laser Irradiation

本文报道在ＬＦ１２激光装置线聚焦打靶情况下，利用ＭｇⅪ共振线和互组合线的强度比推得的激光等离子体电子密度的空间分布轮廓。将此结果和点聚焦打靶得到的结果比较发现二者区别不大。本文还讨论了电子复合伴线、光厚等因素对电子密度测量的影响。

The electron density profile of Mg laser plasma determined from the intensity ratio of resonance and intercombination lines of helium-like ions is presented in the direction of normal to the target surface. No obvious difference of electron density distributions was observed between spot and line focusing. The effects of satellites and opacity on determination of electron density are also discussed.