High resolution scintillation spectroscopy with HgI/sub 2/ as the photodetector

Technical Report · Thu Jan 01 00:00:00 EST 1987

OSTI ID:6758821

Markakis, J M

This report details the progress made in developing mercuric iodide photocells - in particular as the photodetector in scintillation spectrometers where photomultipliers are conventionally used. A spectrometer consisting of an HgI/sub 2/ photocell optically coupled with a CsI(Tl) scintillator gave a /sup 137/Cs (662 keV) resolution of 5.33% FWHM, the best /sup 137/Cs resolution reported to date using a scintillation spectrometer. Relative to photomultiplier tubes, solid state photodetectors are smaller, insensitive to magnetic fields, and have higher quantum efficiencies. HgI/sub 2/ photocells offer an unprecedented energy resolution for scintillation spectrometers and push closer to the resolution of scintillation crystals themselves.

• Research Organization: EG and G Energy Measurements, Inc., Goleta, CA (USA). Santa Barbara Operations
• DOE Contract Number: AC08-83NV10282
• OSTI ID: 6758821
• Report Number(s): EGG-10282-2155; ON: DE87009283
• Resource Relation: Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
GAMMA SPECTROMETERS
FABRICATION
HGI2 SEMICONDUCTOR DETECTORS
PERFORMANCE TESTING
SCINTILLATOR-PHOTODIODE DETECTORS
CESIUM IODIDES
ENERGY RESOLUTION
NOISE
QUANTUM EFFICIENCY
SIGNAL CONDITIONING
SPECTRAL RESPONSE
ALKALI METAL COMPOUNDS
CESIUM COMPOUNDS
EFFICIENCY
HALIDES
HALOGEN COMPOUNDS
INORGANIC PHOSPHORS
IODIDES
IODINE COMPOUNDS
MEASURING INSTRUMENTS
PHOSPHORS
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SEMICONDUCTOR DETECTORS
SPECTROMETERS
TESTING
440103* - Radiation Instrumentation- Nuclear Spectroscopic Instrumentation