60 mm Diameter Lu$_{0.4}$ Gd$_{1.6}$SiO$_{5}$: Ce (LGSO) Single Crystals and Their Improved Scintillation Properties

We developed Lu
_0.4
Gd
_1.6
SiO
₅
(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 N
₂
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