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

Volume

6

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

3708

Lastpage

3710

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2006. IEEE

Conference_Location

San Diego, CA

ISSN

1095-7863

Print_ISBN

1-4244-0560-2

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2006.353798

Filename

4179840