BACKGROUND:Traditionally, X-ray systems for capturing moving objects consist of a continuous X-ray source and a detector that operates at a predetermined frame rate. OBJECTIVE:This study investigates the possibility of using pulsed X-ray source with an inductive energy storage device and a semiconductor opening switch for shooting moving objects. METHODS:The study uses a high-voltage pulse generator that has the following parameters namely, the pulse voltage amplitude up to 320 kV, the pulse current up to 240 A, the current pulse duration of about 50 ns, and the pulse repetition rate up to 2 kHz. The duration and intensity of glow for standard CsI:Tl and Gd2O2S:Tb X-ray phosphors after their irradiation with X-ray flashes of about 50 ns duration are investigated. After X-ray radiation is converted into light, the signal is recorded using semiconductor detectors. We acquired several images of an object moving at a speed of about 20 m/s. A semiconductor detector with phosphor, which operates in the mode of continuous signal accumulation, is used. RESULTS:When using the pulsed X-ray source and phosphors with a short afterglow, the individual frames can be obtained at the pulse repetition rate of several kilohertz, and the detector does not contain the residual luminescence from the previous frame by the arrival of the next frame. CONCLUSIONS:The X-ray source shows good pulse-to-pulse reproducibility of X-rays, and can be used to capture objects in motion at a frame rate of several kHz.

中文翻译：

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脉冲持续时间为 50 ns，峰值功率为 70 MW 的脉冲 X 射线源，用于捕捉运动物体

背景：传统上，用于捕捉移动物体的 X 射线系统由一个连续的 X 射线源和一个以预定帧速率运行的探测器组成。目的：本研究探讨了使用带有感应储能装置和半导体开启开关的脉冲 X 射线源拍摄移动物体的可能性。方法：本研究采用高压脉冲发生器，其脉冲电压幅值可达320 kV，脉冲电流可达240 A，电流脉冲持续时间约50 ns，脉冲重复率可达至 2 kHz。研究了标准 CsI:Tl 和 Gd2O2S:Tb X 射线荧光粉在用约 50 ns 持续时间的 X 射线闪光照射后的发光持续时间和强度。X射线辐射转化为光后，使用半导体探测器记录信号。我们获取了几张以大约 20 m/s 的速度移动的物体的图像。使用以连续信号累积模式工作的具有磷光体的半导体检测器。结果：当使用脉冲X射线源和余辉短的荧光粉时，可以在几千赫兹的脉冲重复率下获得单个帧，并且探测器不包含前一帧到达的残余发光。下一帧。结论：X 射线源显示出良好的 X 射线脉冲间再现性，可用于捕捉几 kHz 帧速率的运动物体。以连续信号累积模式运行。结果：当使用脉冲X射线源和余辉短的荧光粉时，可以在几千赫兹的脉冲重复率下获得单个帧，并且探测器不包含前一帧到达的残余发光。下一帧。结论：X 射线源显示出良好的 X 射线脉冲间再现性，可用于捕捉几 kHz 帧速率的运动物体。以连续信号累积模式运行。结果：当使用脉冲X射线源和余辉短的荧光粉时，可以在几千赫兹的脉冲重复率下获得单个帧，并且探测器不包含前一帧到达的残余发光。下一帧。结论：X 射线源显示出良好的 X 射线脉冲间再现性，可用于捕捉几 kHz 帧速率的运动物体。