Abstract
Lead bromide crystals were grown from the melt by the Bridgman method. Thermal Rayleigh number was varied three orders of magnitude to study the effect of convection on the quality of crystals. Crystals were characterized by studying X-ray rocking curves, X-ray contour scans, and chemical etchpits. The crystal grown at the lowest thermal Rayleigh number showed highest quality and the crystal grown at the highest thermal Rayleigh number showed worst quality.
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