$gamma$-ray spectra detected with HgI$sub 2$ at room temperature

Journal Article · Sun Mar 14 23:00:00 EST 1976 · Appl. Phys. Lett., v. 28, no. 6, pp. 357-359

OSTI ID:4019110

Puschert, W; Scholz, H

Detectors for $gamma$ rays working at room temperature were made of HgI$sub 2$ grown from the vapor phase by the method of dynamic gradient reversal. These detectors show a resolution (FWHM) of 2.3--3.5 keV for $sup 241$Am $gamma$ rays (59.5 keV) with negligible effects on polarization and spectral response for counting rates up to 5000/sec. For $sup 137$Cs $gamma$ rays (662 keV) the resolution could be increased for the first time to about 50 keV provided that the thickness of the detectors was not more than about 0.5 mm. With a quasihemispherical detector, having a better efficiency, it was also possible to obtain a $sup 137$Cs spectrum with a pronounced photopeak. (AIP)

• Research Organization: Philips Gmbh, Forschungslaboratorium Aachen, 51 Aachen, Germany
• NSA Number: NSA-33-026071
• OSTI ID: 4019110
• Journal Information: Appl. Phys. Lett., v. 28, no. 6, pp. 357-359, Journal Name: Appl. Phys. Lett., v. 28, no. 6, pp. 357-359; ISSN APPLA
• Country of Publication: United States
• Language: English

Related Subjects

*GAMMA SPECTROMETERS-- HGI2 SEMICONDUCTOR DETECTORS
*HGI2 SEMICONDUCTOR DETECTORS-- PERFORMANCE
440103* --Instrumentation--Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
CESIUM 137
COBALT 57
EFFICIENCY
ENERGY RESOLUTION
GAMMA DETECTION
GAMMA RADIATION
GAMMA SPECTRA
MERCURY IODIDES
N46130* --Instrumentation--Radiation Detection Instruments-- Nuclear Spectroscopic Instrumentation
POLARIZATION
SODIUM 22