系统和负载参数对喷气式Z箍缩过程的影响

摘要

The effect of parameters of system and load in a gas-puff Z-pinch,such as characteristic inductance,resistance,mass and outer radius of the load,on current and dynamic pinch processes,was studied.The results show that current pattern and pinch processes are sensitive to changes in characteristic inductance and resistance.Mass and outer radius of the load have influence on time and velocity of plasma pinching to the center,but hardly upon the current pattern.Inductance and motional impedance increase with the pinch process.The efficiency of energy transformation is high for the Z-pinch.%利用改进的零维雪铲模型计算了喷气式Z箍缩装置的系统和负载参数(系统特征电感和电阻、气柱质量和外半径等)对电流波形和箍缩动力学过程的影响。结果表明，电流波形和箍缩过程对系统特征电感和电阻的变化非常敏感；气柱质量和外半径对电流波形的影响不大，仅影响等离子体箍缩到心的时间和速度；电感和运动阻抗随箍缩过程的进行而增大；Z箍缩装置的能量转换效率是较高的。