Production of high energy density plasma by inductive energy sturage Pulsed Power Generator

由于脉冲功率技术的发展，可以提供超过100GW的极高功率，从而使10℃~20℃/cm~3和几个关键参数的高温高密度等离子体的产生成为可能。高能量密度等离子体的应用领域十分广泛，如软X射线和中子源、X射线激光器、带电粒子束源、加速器等。传统的脉冲功率发生器由马克斯堆和水电容器组成，用来作为产生高能量密度等离子体的电源。然而，由于这些脉冲功率发生器体积大、重量重、价格昂贵，因此安装和维护非常困难--除了研究所。因此，研究人员的数量是有限的。本研究的目的是证明使用电感储能的轻质紧凑的脉冲功率发生器可以用于产生高能量密度的等离子体。脉冲功率发生器采用喷气双箍缩等离子体作为负载。本文使用的是熊本大学研制的感应储能脉冲功率发生器ASO-II。比较了开启开关和不开启开关两种情况下高能密度等离子体的软X射线。有断开开关的ASO-II产生的电流上升时间比没有它的ASO-II更快。尽管产生软X射线的时刻电流较小，但上升时间较快的电流时，高能量密度等离子体产生的软X射线强度较大。因此，电感储能脉冲功率发生器是产生高能量密度等离子体的有效手段。

The productions of the high temperature and high density plasmas with 10^<20>/cm^3 and several key become possible by the development of pulsed power technology, because the extremely high power over 100GW can be supplied into the plasma. The applications of high energy density plasmas cover the wide fields such as soft x-ray and neutron sources, x-ray lasers, charged particle beam sources, accelerators and et al. .The conventional pulsed power generators, which consist of the Marx bank and the water capacitor have been used as the electric source for the production of high energy density plasma. However, since these pulsed power generators are large, heavy and expensive, it was very difficult to mount and maintain-except the institutes. Therefore, the number of researchers is limited.The aim of this research is to show that the light-weight and compact pulsed power generator using the inductive energy storage can be used to produce the high energy density plasma. The gas-puff 2-pinch plasma is used as the load of the pulsed power generator. The inductive energy storage pulsed power generator, ASO-II, which was developed at Kumamoto university, is used here. The soft x-ray from the high energy density plasma is compared between the cases with and without the opening switches. The ASO-II with the opening switch produces the current with faster rise time than ASO-II without it. The intensity of soft x-ray from the high energy density plasma was larger in the case using the current with the faster rise time, even though the current was smaller at the tine when the soft x-ray was produced. Therefore, the inductive energy storage pulsed power generator is effective to produce the high energy density plasmas.