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

Author

Nowicki, Suzanne ; Dönmez, Burçin ; Anderson, Stephen ; He, Zhong ; Shah, Kanai ; Cirignano, Leonard ; Kim, Hadong

Author_Institution

Nuclear Engineering and Radiological Sciences Department, University of Michigan, Ann Arbor, 48105 USA

fYear

2008

fDate

19-25 Oct. 2008

Firstpage

323

Lastpage

326

Abstract

TlBr is an attractive material for gamma-ray detectors due to its high density (7.56 g/cm³) 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 cm²/V.s.

Keywords

Anodes; Atomic measurements; Cathodes; Electron mobility; Energy resolution; Gamma ray detectors; Radiation detectors; Radiation monitoring; Spectroscopy; Temperature sensors; TlBr; pixellated; room-temperature; semi-conductor detector;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2008. NSS '08. IEEE

Conference_Location

Dresden, Germany

ISSN

1095-7863

Print_ISBN

978-1-4244-2714-7

Electronic_ISBN

1095-7863

Type

conf

DOI

10.1109/NSSMIC.2008.4775178

Filename

4775178