Scintillation spectrometry with HgI/sub 2/ as the photodetector

Technical Report · Thu Dec 31 23:00:00 EST 1981

DOI:https://doi.org/10.2172/7076118· OSTI ID:7076118

Iwanczyk, J. S.; Barton, J. B.; Dabrowski, A. J.; Kusmiss, J. H.; Szymczyk, W. M.; Huth, G. C.; Markakis, J.; Schnepple, W. F.; Lynn, R.

A mercuric iodide (HgI/sub 2/) photodetector has been used to detect light pulses from gamma-ray and alpha-particle interactions in scintillators. The photocurrent response of an HgI/sub 2/ photodetector to light has been measured and found to be favorable for detecting light from most scintillators, which have their maximum emission between 300 and 500 nm. Energy spectra for alpha particles or gamma-rays from combinations of an HgI/sub 2/ photodetector with various scintillators are presented. The energy resolution of the photopeak from annihilation gamma-rays is 19% with a CsI(Tl) crystal and 24% with a BGO crystal. Fabrication of HgI/sub 2/ photodetectors and their optical coupling to a scintillator crystal are described. The advantages of this new solid-state radiation detector compared to the combination of scintillator and PMT, and some proposed applications, are discussed.

• Research Organization: University of Southern California, Marina Del Rey (USA). Inst. for Physics and Imaging Science; EG and G, Inc., Goleta, CA (USA)
• DOE Contract Number: AC08-76NV01183
• OSTI ID: 7076118
• Report Number(s): DOE/NV/01183-210-TP; ON: DE83002435
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALPHA SPECTROMETERS
ENERGY RESOLUTION
FABRICATION
GAMMA SPECTROMETERS
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
MEASURING INSTRUMENTS
MERCURY COMPOUNDS
MERCURY HALIDES
MERCURY IODIDES
PERFORMANCE
PHOTODETECTORS
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SPECTROMETERS