强激光与粒子束, 2004, 16 (2): 235, 网络出版: 2006-05-15   

预脉冲的抑制及Z-pinch实验可允许的预脉冲电压分析

Prepulse suppression and allowable prepulse voltage in Z-pinch experiments
作者单位
1 中国工程物理研究院,研究生部,四川,绵阳,621900
2 中国工程物理研究院,流体物理研究所,四川,绵阳,621900
摘要
分析了脉冲功率装置特别是使用Blumlein线装置的预脉冲电压的产生机理,提出了通过一个连接于Marx和地之间的附加电感来平衡充电电路以抑制预脉冲的方法.用Pspice计算的实例表明:使用该方法可以有效地减小预脉冲电压.使用金属丝的比作用量和汽化热两种计算方法分析了Z-Pinch实验中丝阵负载可承受的预脉冲电压,计算结果与实验结果对比表明,实验中铝丝的预脉冲电流远大于计算结果的最大值,铝丝发生汽化,验证了计算方法的正确性.
Abstract
The causes of prepulse origin in pulse power machine especially in Blumlein pulser are analyzed in this paper. A method that can reduce the prepulse by an inductance between Marx and zero voltage node has been presented while a calculation example used Pspice is provided. The prepulse switches can been used to reduce the prepulse effects in many fields. The prepulse requests for wire arrays in Z-pinch experiments are analyzed and explained by means of specific reaction quantity and vaporization heat, the results of the calculations are similar. In fact, the results of experiments indicate that the energy deposited in the wires is sufficient to bring the aluminicom wires to partial or total vaporization. Because the value of prepulse current is larger than that of calculation, this indicates the calculation method is right.

夏明鹤, 谢卫平, 李洪涛. 预脉冲的抑制及Z-pinch实验可允许的预脉冲电压分析[J]. 强激光与粒子束, 2004, 16(2): 235. XIA Ming-he, XIE Wei-ping, LI Hong-tao. Prepulse suppression and allowable prepulse voltage in Z-pinch experiments[J]. High Power Laser and Particle Beams, 2004, 16(2): 235.

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