| 摘要 |
[Problems to be Solved] The present invention aims to provide a scintillator which can detect photons of high energy, such as hard X-rays or ³-rays, with high sensitivity. [Means to Solve the Problems] A scintillator comprises lithium lutetium fluoride containing neodymiumas a luminescence center, the lithium lutetium fluoride being represented by the chemical formula LiLu 1-x Nd x F 4 where x is in the range of 0.00001 to 0.2, preferably, 0.0001 to 0.05. Preferably, the scintillator comprises a single crystal of the lithium lutetium fluoride containing neodymium. |
