Title :
Polarization phenomena in TlBr detectors
Author :
Hitomi, Keitaro ; Kikuchi, Yohei ; Shoji, Tadayoshi ; Ishii, Keizo
Author_Institution :
Department of Electronics and Intelligent Systems, Tohoku Institute of Technology, Sendai 982-8577, Japan
Abstract :
A comparison of long-term stabilities of TlBr detectors with Au and Tl electrodes was performed in this study in order to reveal polarization phenomena in TlBr detectors. Au/TlBr/Au detectors exhibited polarization phenomena at room temperature observed as degradation of spectral performance and reduction of leakage current with elapsed time. Applying reverse bias voltage to the detectors recovered the detector performance temporary. No polarization phenomena were observed in Tl/TlBr/Tl detectors at room temperature. The detector exhibited stable spectral performance for 24 hours.
Keywords :
Degradation; Detectors; Electrodes; Gold; Leak detection; Leakage current; Polarization; Stability; Temperature; Voltage;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE
Conference_Location :
Dresden, Germany
Print_ISBN :
978-1-4244-2714-7
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2008.4775149
