IEEE Transactions on Nuclear Science · 1981 · 41 citations · 4 references
EngineeringElectrical EngineeringMicroelectronicsRadiation DetectionRadiation MeasurementDetector TechnologyPhotodetectorsRadiation DetectorsSemiconductor DetectorsX-ray DetectionX-ray DetectorsDetector Energy ResolutionDetector Readout ElectronicsHigh-resolution X-ray DetectorsLow-noise AmplifiersLow-noise DesignLow-noise Detector DesignPeltier EffectRadiation Energy Resolution
An analysis of different preamplification systems for use with room temperature mercuric iodide x-ray detectors has been performed. Resistor-, drain-, and light-feedback preamplifiers have been studied. Energy resolution values of 295 eV (FWHM) for an Fe-55 source (5.9 keV) and 225 eV (FWHM) for a pulser have been obtained with both the detector and the input FET at room temperature using a pulsed-light feedback preamplifier. Improvement in energy resolution by cooling the input FET using a small Peltier element has been discussed.
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