Mercuric iodide photodetectors for scintillation spectroscopy
We have measured the responses to /sup 137/Cs (662 keV) of both a 1-inch-diam by 2-inch-thick NaI(Tl) scintillator optically coupled to a 1-inch-diam by 800-..mu..m-thick mercuric iodide (HgI/sub 2/) photodetector, and a 1-cm-diam by 1-cm-thick CaWO/sub 4/ scintillator coupled to a 1.3-cm-diam by 600-..mu..m-thick HgI/sub 2/ photodetector. Best spectral resolution to /sup 137/Cs was 7.8% FWHM for the NaI(Tl)-HgI/sub 2/ and 12.5% FWHM for the CaWO/sub 4/-HgI/sub 2/ detectors; peak-to-valley ratios were 26:1 and 16:1, respectively. HgI/sub 2/ detectors operate at room temperature and their use in scintillation spectroscopy presents the ultimate miniaturization of scintillation detectors, limited mainly by the size of the scintillation crystal.
- Research Organization:
- EG and G, Inc., Goleta, CA (USA). Energy Measurements Group; University of Southern California, Marina Del Rey (USA). Inst. for Physics and Imaging Science
- DOE Contract Number:
- AC08-83NV10282
- OSTI ID:
- 6416379
- Report Number(s):
- DOE/NV/10282-2038; CONF-841007-6; ON: DE85001437
- Resource Relation:
- Conference: Nuclear science symposium, Orlando, FL, USA, 31 Oct 1984; Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GAMMA SPECTROSCOPY
HGI2 SEMICONDUCTOR DETECTORS
QUANTUM EFFICIENCY
SCINTILLATIONS
SPECTRAL RESPONSE
EFFICIENCY
MEASURING INSTRUMENTS
RADIATION DETECTORS
SEMICONDUCTOR DETECTORS
SPECTROSCOPY
440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation
440101 - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments