Title :
Large Area Mercuric Iodide Photodetectors
Author :
Iwanczyk, J.S. ; Dabrowski, A.J. ; Markakis, J.M. ; Ortale, C. ; Schnepple, W.F.
Author_Institution :
University of Southern California Institute for Physics and Imaging Science 4676 Admiraly Way, Suite 932 Marina del Rey, California 90292
Abstract :
Results of an investigation of large area mercuric iodide (HgI2) photodetectors are reported. Different entrance contacts were studied, including semitransparent metallic films and conductive liquids. Theoretical calculations of electronic noise of these photodetectors were compared with experimental results. HgI2 photodetectors with active area up to 4 cm2 were matched with NaI(Tl) and CsI(Tl) scintillation crystals and were evaluated as gamma-radiation spectrometers. Energy resolution of 9.3% for gamma radiation of 511 keV with a CsI(Tl) scintillator and energy resolution of 9.0% for gamma radiation of 622 keV with a NaI(Tl) scintillator have been obtained.
Keywords :
Crystals; Gamma ray detection; Gamma ray detectors; Gamma rays; Leak detection; Optical coupling; Photodetectors; Radiation detectors; Silicon radiation detectors; Spectroscopy;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1984.4333271
