Patent Number: 
Section: claims

1. A scintillator material emitting fluorescence in response to an incident radiation,wherein the scintillator material comprises a zinc-oxide single crystal grown on a +C surface or a −C surface of a plate-shaped seed crystal of zinc oxide comprising a C surface as a main surface,wherein the zinc-oxide single crystal comprises In and Li,wherein the fluorescence has a fluorescence lifetime of less than 20 ps, andwherein, in the zinc-oxide single crystal, Li concentration is in a range of 0.15 to 11 times In concentration. 2. The scintillator material according to claim 1, wherein the fluorescence consists of a single component having a fluorescence lifetime of less than 20 ps. 3. The scintillator material according to claim 1, wherein, in the zinc-oxide single crystal, Li concentration is in a range of 0.15 to 6.74 times In concentration. 4. A scintillation detector comprising a scintillator including the scintillator material according to claim 1.