Growth of High Quality PWO Single Crystal

Abstract

Abstract: High-quality lead tungstate (PWO) single crystals were successfully grown by a modi- fied vertical Bridgman method. The optimal growth parameters selected are as follows: seed crys- tal direction <001 >, lowering rate 0.6~1mm/h, the axial temperature gradient 20-30℃/cm at growth solid-melt boundary. The performances of PWO crystals obtained are as follows: optical transmittance more than 60% at 420nm and more than 25% at 360nm, light yield more than 9 p.e./MeV, light loss less than 5% after irradiation.

Key words: PWO crystal, modified Bridgman method, impurity analysis, scintillation perfor mance

CLC Number:

O782

YANG Pei-Zhi,LIAO Jing-Ying,SHEN Bing-Fu,SHAO Pei-Fa,NI Hal-Hong,FANG Quan-Xing,YIN Zhi-Wen. Growth of High Quality PWO Single Crystal[J]. Journal of Inorganic Materials.

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Growth of High Quality PWO Single Crystal

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