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一、引言:X射线探测器简单地说是一个信号转换器,它将入射的X射线按其能量大小不同转换成幅度不同的电脉冲。探测器的种类分:正比计数管,盖革计数管和闪烁计数管。在波谱仪中均采用正比计数管。由于不同波长的特征X射线的能量各不相同,要求探测器即计数管的灵敏度也应有所不同。对于波长在67A～18.307A的X射线采用的是超轻元素计数管,对于波长在11.909A～0.128A的X射线采用的是重元素计数管。超轻元素与重元素计数管的区别主要在入射窗口薄膜上,超轻元素计数管窗口膜厚在0.2～0.3μm左右,而重元素计数管窗口膜厚约为6μm,若用重元素计数管测超轻元素的X射线,
I. INTRODUCTION: X-ray detector is simply a signal converter that converts the incident X-ray into electric pulses with different amplitudes according to their energy. Detector type points: proportional counter tube, Geiger counter tube and scintillation counter. In the spectrometer are used proportional counter tube. Since the energy of the characteristic X-rays at different wavelengths varies, the sensitivity of the detector, ie the counting tube, should also be different. For the wavelength of 67A ~ 18.307A X-ray is used in ultra-light element counting tube, for the wavelength of 11.909A ~ 0.128A X-ray is used in heavy element counting tube. The difference between super-light elements and heavy-element counter tubes is mainly on the incident window film, the super-light element counter tube window film thickness is about 0.2 ~ 0.3μm, while the heavy element counter tube window film thickness is about 6μm, if the heavy element counter tube Ultra-light elements to measure the X-ray,