新型超快光电辐射探测器研制

New Type Ultra-fast Photoelectric Radiation Detector

摘要: 针对超快脉冲辐射测量的需求，开发了一种具有超快时间响应、大线性电流输出的新型光电探测器件——超快大电流光电管。利用脉冲氙灯、飞秒激光器对该光电探测器件的最大线性电流输出、时间响应等特性参数进行了实验测量。同时，利用该探测器件与超快闪烁体耦合构成的超快脉冲辐射探测器对亚纳秒脉冲X射线源时间谱进行了测量。结果表明，该光电探测器件对脉冲的响应前沿为251 ps、半高宽小于500 ps，在其典型电压下具有3 A以上线性电流输出，对于亚纳秒脉冲X射线束等脉冲辐射场的测量是一较为理想的探测器件。

Abstract: A new type of photoelectric detection device with the characters of ultra-fast and wider dynamic linear range was developed. It was used for the measurement of ultra-fast pulse signal. The characteristic parameters of device were studied by pulse xenon lamp and laser etc. The detection system with ultra-fast scintillator was applied in ultra-fast pulse X-ray generator. The experimental results indicate that the detector has ultra-fast time-response. Its further applications will be found in the field of sub-nano-second pulse measurements.