Czochralski growth of 8 inch size BaF2 single crystal for a fast scintillator

In this work we optimize the growth condition of 8 inch size BaF2 single crystal which could be grown by the Czochralski (Cz) method with the resistive heating system and thermal insulators. Grown crystals were colorless transparent with 205mm in diameter, 90mm in length. The variation of the birefr...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2005-01, Vol.537 (1-2), p.159-162
Main Authors: Kamada, Kei, Nawata, Teruhiko, Inui, Yoji, Yanagi, Hiroyuki, Sato, Hiroki, Yoshikawa, Akira, Nikl, Martin, Fukuda, Tsuguo
Format: Article
Language:English
Subjects:
Fluoride
Luminescence
Scintillator
Single crystal
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Summary:In this work we optimize the growth condition of 8 inch size BaF2 single crystal which could be grown by the Czochralski (Cz) method with the resistive heating system and thermal insulators. Grown crystals were colorless transparent with 205mm in diameter, 90mm in length. The variation of the birefringence in the radial direction was 8.7nm/cm. Grown BaF2 single crystals show good transmittance (>80%) over 200nm wavelength and super fast decay time of 0.60–0.63ns. These characteristics indicate the high potential of 8-in. size BaF2 single crystal grown by the Cz method for TOF-PET.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.07.257