Characterization of pixellated thallium bromide radiation detectors for gamma-ray spectroscopy

TlBr is an attractive material for gamma-ray detectors due to its high density (7.56 g/cm 3 ) and high atomic number (Tl:81, Br:35). In the present work, three TlBr detectors provided by Radiation Monitoring Devices, Inc. have been investigated. Energy resolution of 2.4 % FWHM at 662 keV at room tem...

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Bibliographic Details
Published in2008 IEEE Nuclear Science Symposium Conference Record pp. 323 - 326
Main Authors Nowicki, Suzanne, Donmez, Burcin, Anderson, Stephen, He, Zhong, Shah, Kanai, Cirignano, Leonard, Kim, Hadong
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.10.2008
Subjects
Anodes
Atomic measurements
Cathodes
Electron mobility
Energy resolution
Gamma ray detectors
pixellated
Radiation detectors
Radiation monitoring
room-temperature
semi-conductor detector
Spectroscopy
Temperature sensors
TlBr
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Summary:TlBr is an attractive material for gamma-ray detectors due to its high density (7.56 g/cm 3 ) and high atomic number (Tl:81, Br:35). In the present work, three TlBr detectors provided by Radiation Monitoring Devices, Inc. have been investigated. Energy resolution of 2.4 % FWHM at 662 keV at room temperature was achieved after depth correction. The depth sensing method uses the cathode to anode (C/A) signal ratio and demonstrates that the detector is fully active from the cathode to the anode surface. Electron transport properties in TlBr detectors have been investigated and show the mobility of the electrons to be 30 cm 2 /V.s.
ISBN:1424427142
9781424427147
ISSN:1082-3654
2577-0829
DOI:10.1109/NSSMIC.2008.4775178