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Coupling mode of cesium iodide detector
The luminescence spectra of cesium iodide scintillation and the absorption spectra of CMOS image sensor coincide perfectly, and the peaks of both curves fall within the range of 500-600nm.At present, the highest resolution of cesium iodide scintillator is needle cesium iodide.
The needle structure of the cesium iodide detector is similar to the optical conductivity. When the visible light is output, the emission is more concentrated, brighter and higher resolution.
The spiculate x ray detector scintillator indicates that the scintillator needs to be coupled to work on the detector. There are two main ways of coupling:
1.Substrate compression (coupling) type 2.Direct deposition type substrate suppression (coupling) type scintillator, where the scintillator is grown on a substrate, then the substrate is on, and the scintillator is attached downward to the plate detector.
2. The cesium iodide detector is located under the scintillator, which is used to receive visible light from the scintillator and convert the optical signal into electrical signal, which is a key step of photoelectric conversion.
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