Nanosecond breakdown in liquid nitrogen
Nanosecond breakdown in liquid nitrogen
复制标题
液氮中的纳秒击穿
DOI：
--
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
V. Markovets
中科院分区：
文献类型：
--
作者：
A. Belevtsev;V. Markovets
这种快速通信报告了液氮在 77 K 和大气压下纳秒级的分解。描述了为开展这项工作而建立的实验系统的主要特征以及所采用的测量技术。重点关注脉冲反射测量方法，特别详细研究了高精度同步电流和电压信号的问题。击穿发生在具有平面电极和可变电极间距离的间隙几何形状中。重点是研究击穿动力学、数值估计电子倍增率并确定放电桥接间隙所需的时间。对相同条件下气态氮和液氮获得的实验结果进行比较，揭示液氮分解动力学的一些具体特征。
This rapid communication reports on nanosecond breakdown in liquid nitrogen at 77 K and atmospheric pressure. The key features of the experimental system established to undertake this work have been described along with the measuring techniques employed. Attention is given to the pulsed reflectometry method, and in particular the problem of synchronizing the current and voltage signals with a high degree of accuracy is examined in detail. The breakdown occurs in a gap geometry with plane electrodes and a variable interelectrode distance. The focus is on investigating the breakdown dynamics, numerically estimating the electron multiplication rates and determining the time the discharge takes to bridge the gap. The experimental results obtained for gaseous and liquid nitrogen under identical conditions are compared to reveal some specific features of the breakdown dynamics in liquid nitrogen.