Surface-discharge characteristics in a ferrite-cathode diode
Surface-discharge characteristics in a ferrite-cathode diode
复制标题
铁氧体阴极二极管的表面放电特性
DOI：
10.1109/tdei.1995.8881921
复制
发表时间：
1995
影响因子：
3.1
通讯作者：
T. Oizumi
中科院分区：
文献类型：
--
作者：
A. Shikoda;E. Sato;M. Sagae;T. Oizumi
描述了平面铁氧体阴极高压二极管的表面放电特性。该实验装置由恒压电源、带200m同轴电缆的极性反转线脉冲发生器、涡轮分子泵和放电室组成。该电离室为二极管式，由涡轮分子泵抽真空，压力为13.3-10P-a，由钨圆盘阳极、平面铁氧体阴极和聚甲基丙烯酸甲酯管体组成。阴极垂直于阳极面放置，阳极与阴极的间距为0.5 mm。该脉冲发生器的同轴电缆由电源充电，充电电压为10~40千伏，输出电压为充电电压的-1倍的矩形脉冲，其短上升沿为-20 ns。脉冲的有效持续时间由电缆长度确定，其值为-1ps。本报告调查的闪络过程分为两个阶段。在第一阶段，由于放电电流在阴极板内部流动，电流主要由阴极阻抗与电阻成比例地调节。接下来，电流随着铁氧体阴极上表面放电的相应增长而显著增加。初始电流的持续时间随着阴极厚度和接触电极直径的增加而增加。在本工作中，最大电流由脉冲发生器电缆的特性阻抗决定，因为二极管中的放电阻抗在表面放电过程中显著降低。
The surface-discharge characteristics of a HV diode with a planar ferrite cathode are described. This experimental setup consists of a constant HV power supply, a polarity inversion line pulser with a 200 m coaxial cable, a turbomolecular pump and a discharge chamber. The chamber was of a diode type which was evacuated by a turbomolecular pump with a pressure of 13.3-10P-a and was composed of a tungsten disk anode, a planar ferrite cathode, and a polymethylmethacrylate tube body. The cathode was set perpendicular to the anode plane, and the space between the anode and cathode electrodes had a value of 0.5 mm. The coaxial cable of the pulser was charged from 10 to 40 kV by the power supply, and the rectangular pulses with output voltages of -1x the charged voltage were produced with short rise times of - 20 ns. The effective duration of the pulse was determined by the cable length and had a value of - 1 ps. The process of the flashover investigated in this report consisted of two stages. In the first stage, because the discharge current flowed inside the cathode plate, the current was primarily regulated by the cathode impedance in proportion to the resistance. Next, the current substantially increased with corresponding growth of the surface discharge on the ferrite cathode. The duration of the initial current increased with the thickness of the cathode and the diameter of the contact electrode. In the present work, the maximum current was determined by the characteristic impedance of the pulser cable since the discharge impedance in the diode substantially decreased during the surface discharge.
采用铜靶二极管的单色闪光 X 射线发生器
DOI：
--
发表时间：
2005
期刊：
SPIE 5580
影响因子：
--
作者：
E.Sato;M.Sagae;M.Komatsu;R.Germer;E.Tanaka;H.Mori;T.Kawai;T.Ichimaru;S.Sato;H.Ojima;K.Takayama;H.Ido
通讯作者：
H.Ido