Title :
Recent Progress in TlBr Radiation Detectors
Author :
Dmitriev, Yuri ; Kim, Hadong ; Higgins, William ; Cirignano, Leonard ; Dokhale, Purushottam ; Wong, Philip ; Shah, Kanai
Author_Institution :
Radiat. Monitoring Devices Inc., Watertown, MA
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
Thallium bromide is a wide band gap, high Z, high density semiconductor that has been investigated as a nuclear radiation detector. In this paper we present experimental results on material purification, crystal growth, detector fabrication and detector characterization. TlBr material was purified by both distillation and zone refining. Crystals with 10-mm and 16-mm diameter were grown by the vertical Bridgman method. Single element devices and arrays were fabricated and tested. Mobility-lifetime products were found to increase as a result of purification. Potential applications of TlBr detectors are medical imaging and homeland security.
Keywords :
crystal growth from melt; crystal purification; distillation; semiconductor counters; thallium compounds; wide band gap semiconductors; zone refining; TlBr; crystal growth; detector characterization; detector fabrication; distillation; high density semiconductor; homeland security; material purification; medical imaging; mobility-lifetime products; nuclear radiation detector; semiconductor radiation detector; thallium bromide; vertical Bridgman method; wide band gap semiconductor; zone refining; Biomedical imaging; Crystalline materials; Crystals; Fabrication; Purification; Radiation detectors; Refining; Semiconductor materials; Testing; Wideband;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.353798
