Inorganic scintillator and process for its fabrication
The inorganic scintillator of the invention is an inorganic scintillator capable of producing scintillation by radiation, which is a crystal comprising a metal oxide containing Lu, Gd, Ce and Si and belonging to space group C2/c monoclinic crystals, and which satisfies the condition specified by the following inequality (1A), wherein A Lu represents the number of Lu atoms in the crystal and A Gd represents the number of Gd atoms in the crystal. { A Lu /( A Lu +A Gd )}<0.50 (1A)
1. An inorganic scintillator capable of producing scintillation by radiation, which is a crystal
comprising a metal oxide containing Lu, Gd, Ce Si and Y and
belonging to space C2/c monoclinic crystals, and
which satisfies the condition specified by the following inequality:
{( A Lu +A Y )/( A Lu +A Y +A Gd )}<0.50
wherein A Lu represents the number of Lu atoms in the crystal, A Y represents the number of Y atoms in the crystal, and A Gd represents the number of Gd atoms in the crystal.
2. An inorganic scintillator according to claim 1 which satisfies the condition specified by the following inequality.
0.10 <{A Lu /( A Lu +A Gd )}<0.40
3. An inorganic scintillator according to claim 1 which satisfies the condition specified by the following inequality:
0.10 <{A Lu /( A Lu +A Gd )}<0.40
4. An inorganic scintillator according to claim 1 which is a single crystal.