Performance Testing of Nuclear Radiation Detectors Based on Pulsed X-ray Detection
Objective:Using digital X-ray photography(DR)equipment to simulate pulsed X-ray radiation fields,testing the performance of four common nuclear radiation detectors,and selecting the most suitable nuclear radiation detector for pulsed X-ray detection.Methods:Control the exposure time of DR equipment from short to long,select 10 levels between 20 ms and 1 000 ms,keep the tube voltage at 81 kV and the tube current at 10 mA,and test the performance of nuclear radiation detectors under different exposure time conditions.Result:Scintillator detectors are most suitable for short-term high-dose pulse X-ray detection.Conclusion:(1)G-M counters,high-pressure ionization chambers,and NaI(Tl)detectors are not suitable for detecting short-term high-dose pulsed X-rays with exposure times below 1 000 ms.(2)The plastic scintillator detector has a good time response below an exposure time of 1 000 ms,and the detection results show that the dose equivalent rate around 160 ms reaches stability.
万方数据
维普
