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Recent Results in TlBr Detector Crystals Performance

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6 Author(s)
Shorohov, M. ; Bruker Baltic Ltd., Riga, Latvia ; Kouznetsov, M. ; Lisitskiy, I. ; Ivanov, V.
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Recent developments in TlBr material preparation and growth technology have led to much improved crystal quality, detector performances and most importantly, reproducibility. In this paper, we describe some of the technological steps we have developed that have allowed us to produce reproducible spectrometric grade crystals for detector applications and present spectroscopic results. Typical crystals have a specific resistance of (3-5) times1011 Ohm-cm and mobility-life time products of about ~10-4 cm2 /V, for both electrons and the holes. After fabrication into simple planar detectors of area 5 times 5 mm2 and thickness 2 mm, spectral resolutions of 0.8, 1.4, 2.1, and 7.1 keV, have been achieved at incident energies of 5.9, 59.6, 122, and 662 keV, respectively. These results were obtained without collimation or employing single carrier sensing or depth correction techniques.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:56 ,  Issue: 4 )

Date of Publication:

Aug. 2009

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