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Non-equilibrium conditions during a laser induced plasma expansion

机译:激光诱导的等离子体膨胀过程中的非平衡条件

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A theoretical model to simulate the laser induced plasma (LIP) expansion with chemical kinetics has been developed for a Ti target. Our attention has been also focused on the influence of initial conditions on the plume expansion. In particular, changing the initial speed, temperature, pressure and plume extension, the speed of expansion and the width of the time of flight (TOF) peak change. A systematic study of the effect of all these parameters on the plume expansion can lead to a method that allows the determination of initial conditions of the expansion, which are not available experimentally because of the delay necessary to trigger the measure apparatus with the laser pulse.
机译:已经为Ti靶开发了用化学动力学模拟激光诱导等离子体(LIP)扩展的理论模型。我们的注意力还集中在初始条件对羽流膨胀的影响上。特别是,更改初始速度,温度,压力和羽流扩展,扩展速度和飞行时间(TOF)峰宽都会发生变化。对所有这些参数对羽流膨胀的影响的系统研究可以得出一种方法,该方法可以确定膨胀的初始条件,由于用激光脉冲触发测量设备所需的延迟,因此无法通过实验获得。

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