X-ray radiation field detecting device and X-ray radiation field detecting method based on semiconductor laser device

Abstract

The invention belongs to the field of pulse radiation detection, and particularly relates to an X-ray radiation field detecting device and an X-ray radiation field detecting method based on a semiconductor laser device. The detecting device comprises a radiation detector and laser power measuring and recording equipment. The radiation detector is in optical path connection with the laser power measuring and recording equipment through an optical fiber or a laser focusing and transmitting device. The radiation detector comprises the semiconductor laser device and an external power supply for supplying pre-bias current to the semiconductor laser. The current which is supplied by the external power supply is larger than or equal with the threshold current of the semiconductor laser. The X-ray radiation field detecting device performs direct modulation on active-region carriers of the semiconductor layer by means of X-ray, thereby realizing disturbance on output power of the semiconductor laser. X-ray pulse information is finally acquired through measuring change of an output laser signal. The X-ray radiation field detecting device based on the X-ray radiation field detecting method has advantages of simple structure, low cost, ultra-short response time, etc. Furthermore laser is used as a signal characteristic.

Description

technical field [0001] The invention belongs to the field of pulsed radiation detection, and in particular relates to a semiconductor laser-based X-ray radiation field detection device and detection method. Background technique [0002] The pulse time spectrum of ionizing radiation particles such as pulsed X-rays, neutrons, and gamma is one of the main parameters of pulsed ray sources and radiation fields. Measurements of X-rays, gamma, and neutrons usually need to be converted into charged particles for signal measurement and recording . Common semiconductor detectors are typical radiation detectors characterized by current signals, and scintillation detectors convert rays into recoil protons, use proton ionization to emit fluorescence, and output current signals through photoelectric conversion devices for recording. Therefore, the current Some detection methods are generally current-type radiation detection methods that use current as the signal characteristic and use co...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the technical problems of poor time response capability and low detection sensitivity of the existing pulsed X-ray radiat

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