A single crystal of YAG-new fast scintillator in SEM

Abstract

This letter presents basic results obtained with a single crystal of YAG:Ce³⁺ of 25 mm diameter and 60 mm high from which scintillators of arbitrary shape and size can be ground. Single crystals of this size were prepared by growth from a melt in an atmosphere comprising a special gas mixture and at well correlated crystal growth rates and solid-liquid interface temperature gradients. They contain about 1% of Ce³⁺ acting as the activator in the garnet crystal lattice.