DocumentCode
852403
Title
A Study of Low-Noise Preamplifier Systems for Use with Room Temperature Mercuric Iodide (Hgi2) X-Ray Detectors
Author
Iwanczyk, J.S. ; Dabrowski, A.J. ; Huth, G.C. ; Del Duca, A. ; Schnepple, W.
Author_Institution
University of Southern California Medical Imaging Science Group 4676 Admiralty Way, Suite 932 Marina Del Rey, CA 90291
Volume
28
Issue
1
fYear
1981
Firstpage
579
Lastpage
582
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.
Keywords
Circuit noise; Energy resolution; FETs; Noise generators; Preamplifiers; Pulse shaping methods; Spectroscopy; Temperature; X-ray detection; X-ray detectors;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/TNS.1981.4331242
Filename
4331242
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