A study of low-noise preamplifier systems for use with room temperature mercuric iodide /HgI2/ X-ray detectors
Abstract
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.
- Publication:
-
IEEE Transactions on Nuclear Science
- Pub Date:
- February 1981
- DOI:
- Bibcode:
- 1981ITNS...28..579I
- Keywords:
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- Energy Spectra;
- Feedback Amplifiers;
- Iodides;
- Mercury Compounds;
- Radiation Detectors;
- X Ray Spectra;
- Electronic Equipment;
- Low Noise;
- Room Temperature;
- Space Commercialization;
- Spectral Resolution;
- Instrumentation and Photography