Sato E, Takahashi K, Sagae M, Kimura S, Oizumi T, Hayasi Y, Tamakawa Y, Yanagisawa T
Department of Physics, Iwate Medical University, Morioka, Japan.
Med Biol Eng Comput. 1994 May;32(3):289-94. doi: 10.1007/BF02512524.
The construction and fundamental studies are described for a sub-kilohertz X-ray generator for producing low-dose rate flash X-rays. The X-ray tube was a glass-enclosed cold-cathode triode, composed of a tungsten plate target, a rod-shaped graphite cathode, a mesh-type trigger electrode made of tungsten wires, and a glass tube body. The coaxial condenser was charged up to 60 kV by a power supply, and the electric charges in the condenser were discharged to the X-ray tube repetitively when a negative high-voltage pulse was applied to the trigger electrode. The maximum tube voltage before the discharging was equivalent to the initial charged voltage of the condenser, and the maximum tube current was about 0.3 kA with a charged voltage of 60 kV. The X-ray durations were about 1 microsecond, and the X-ray intensity was about 0.47 microC kg-1 at 0.5 m per pulse with a charged voltage of 60 kV. The maximum repetition rate of the X-rays was about 0.4 kHz, and high-speed radiography was performed.
本文描述了一种用于产生低剂量率闪光X射线的亚千赫兹X射线发生器的构建及基础研究。X射线管是一个玻璃封装的冷阴极三极管，由钨板靶、棒状石墨阴极、钨丝制成的网状触发电极和玻璃管体组成。同轴电容器由电源充电至60 kV，当向触发电极施加负高压脉冲时，电容器中的电荷会重复放电至X射线管。放电前的最大管电压等于电容器的初始充电电压，在充电电压为60 kV时，最大管电流约为0.3 kA。X射线持续时间约为1微秒，在充电电压为60 kV时，每个脉冲在0.5 m处的X射线强度约为0.47 μC kg-1。X射线的最大重复率约为0.4 kHz，并进行了高速射线照相。
