Thallium bromide optical and radiation detectors for X- and gamma-ray spectroscopy

Author

Hitomi, K. ; Matsumoto, M. ; Muroi, O. ; Shoji, T. ; Hiratate, Y.

Author_Institution

Dept. of Electron., Tohoku Inst. of Technol., Sendai, Japan

Volume

4

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

2406

Lastpage

2409

Abstract

Compound semiconductor, thallium bromide (TlBr), has been investigated as an optical and radiation detector material for use in X- and γ-ray spectroscopy. Single crystals of TlBr have been grown by the traveling molten zone method using zone-purified materials. Direct X- and γ-ray detectors have been fabricated from the TlBr crystals. The direct TlBr detectors have exhibited good spectrometric performances at room temperature. Polarization in TlBr detectors has been observed to deteriorate detector performance. Optical detectors for scintillation spectroscopy have been fabricated from the crystals by depositing an optically transparent electrode of indium-tin-oxide (ITO) on the front surface of the crystals. Quantum efficiency of the TlBr optical detectors has been high in wavelength region below ~460 nm where scintillation emissions of LSO and GSO occur

Keywords

X-ray detection; X-ray spectroscopy; gamma-ray detection; gamma-ray spectroscopy; semiconductor counters; thallium compounds; TlBr; TlBr crystals; X-ray spectroscopy; detector performance; gamma-ray spectroscopy; optical detector material; optically transparent electrode; quantum efficiency; radiation detector material; scintillation spectroscopy; traveling molten zone method; zone-purified materials; Crystalline materials; Crystals; Gamma ray detection; Gamma ray detectors; Optical detectors; Optical materials; Radiation detectors; Semiconductor materials; Solid scintillation detectors; Spectroscopy;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2001 IEEE

Conference_Location

San Diego, CA

ISSN

1082-3654

Print_ISBN

0-7803-7324-3

Type

conf

DOI

10.1109/NSSMIC.2001.1009305

Filename

1009305