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15 Mar 1976

Volume 28, Issue 6, pp. 295-359

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γ‐ray spectra detected with HgI2 at room temperature

W. Puschert and H. Scholz

Appl. Phys. Lett. 28, 357 (1976); http://dx.doi.org/10.1063/1.88758 (3 pages) | Cited 7 times

Online Publication Date: 28 August 2008

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Detectors for γ rays working at room temperature were made of HgI2 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 241Am γ rays (59.5 keV) with negligible effects on polarization and spectral response for counting rates up to 5000/sec. For 137Cs γ 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 137Cs spectrum with a pronounced photopeak.
Show PACS
29.40.Wk Solid-state detectors
29.30.Kv X- and γ-ray spectroscopy
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