Purification, crystal growth and detector performance of TlBr

Alexei V. Churilov; William M. Higgins; Guido Ciampi; Hadong Kim; Leonard J. Cirignano; Fred Olschner; Kanai S. Shah

doi:10.1117/12.794838

4 September 2008 Purification, crystal growth and detector performance of TlBr

Alexei V. Churilov, William M. Higgins, Guido Ciampi, Hadong Kim, Leonard J. Cirignano, Fred Olschner, Kanai S. Shah

Proceedings Volume 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X; 70790K (2008) https://doi.org/10.1117/12.794838
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

TlBr is a promising semiconductor for gamma-ray detection at room temperature, but it has to be extremely pure to become useful. We investigated the purification and crystal growth of TlBr to improve the mobility and lifetime of charge carriers, and produce TlBr detectors for radioisotopic detection. Custom equipment was built for purification and crystal growth of TlBr. The zone refining and crystal growth were done in a horizontal configuration. The process parameters were optimized and detector grade material with an electron mobility-lifetime product of up to 3x10^-3 cm²/V has been produced. The material analysis and detector characterization results are included.

Citation Download Citation

Alexei V. Churilov, William M. Higgins, Guido Ciampi, Hadong Kim, Leonard J. Cirignano, Fred Olschner, and Kanai S. Shah "Purification, crystal growth and detector performance of TlBr", Proc. SPIE 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, 70790K (4 September 2008); https://doi.org/10.1117/12.794838

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