60 mm Diameter Lu0.4Gd1.6SiO5: Ce (LGSO) Single Crystals and Their Improved Scintillation Properties.

We developed Lu0 .4 Gd1 .6 SiO5 (LGSO) crystal as a new scintillator for medical imaging applications. The size of the LGSO ingot obtained for this investigation was approximately 60 mm in diameter and 170 mm in length. The as-grown crystal was yellow in color. To eliminate the tint, the crystal was annealed in pure N2 atmosphere after the growth. As a result, the LGSO became colorless with uniform and large light output which is about 2.0 times that of GSO. [ABSTRACT FROM AUTHOR]