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提出了一种利用单飞秒激光脉冲驱动类氖钛X射线激光的物理方案.利用自相似方法研究了不同脉冲前沿的单飞秒激光辐照钛平板靶产生的类氖钛X射线激光等离子体的特性,得到了电子温度、电子密度和定标长度三者的定标律,讨论了给定输入参数下各定标律曲线的特性.研究表明,利用单个飞秒激光能够实现X射线激光的产生,而且脉冲前沿强度随时间增长平缓的飞秒激光有利于驱动X射线激光.本研究为实验上实现单飞秒激光脉冲驱动X射线激光提供了一种新的方案。
A kind of physical scheme of using single-femtosecond laser pulse to drive neon-like X-ray laser is proposed.The self-similar method is used to study the effect of neon-X-ray laser plasma generated by single-femtosecond laser irradiated titanium flat target with different pulse front , The calibration laws of the electron temperature, the electron density and the calibration length are obtained, and the characteristics of each calibration curve under a given input parameter are discussed. The results show that the use of a single femtosecond laser can achieve the X-ray laser And the femtosecond laser pulse whose pulse frontal strength grows with time is favorable for driving the X-ray laser.This study provides a new scheme to experimentally realize the single-femtosecond laser pulse-driven X-ray laser.