【摘要】 描述了对双脉冲辐照薄膜锗靶形成的等离子体参量诊断的实验研究。使用平晶谱仪和时间分辨 X 射线晶体谱仪诊断等离子体参量,给出了等离子体的电子密度、电子温度及其时间演变过程。实验结果表明:双脉冲打靶比单脉冲打靶电子温度有较大幅度提高。诊断结果为双脉冲驱动薄膜靶高增益 X 射线激光实验选择最佳的实验条件提供了实验依据。更多还原

【Abstract】 The experimental investigations for the diagnosis of plasma produced from the foil-Ge target irradiated by a double-laser-pulse are described. The experiment was performed at “Shenguang” facility. Flat-crystal spectrographs and a time-resolved crystal spectrograph were used to diagnose plasma parameters. The electron density, the electron temperature and their time evolution are given. The experimental results showed that the electron temperature is greatly increased in the experiment driven by double-laser-pulse. The diagnostic results are the basis of selecting the optimum conditions for the gain experiment of the X-ray laser generated from foil-Ge target driven by double-laser pulse.更多还原