Field of the Invention
The present invention relates to a scintillator which emits light when radiation is applied thereto, and a radiation detector using the scintillator.
Description of the Related Art
In a flat panel detector (FPD) used in clinical practice or the like, X-rays which pass through a subject are received by a scintillator, and light emitted from the scintillator is detected by light receiving elements serving as a detector. The light receiving elements are arranged as a two-dimensional array. Japanese Patent Application Laid-Open No. 2001-58881 discloses a scintillator which exhibits an optical waveguide property in order to prevent light emitted by the scintillator from spreading to an adjacent light receiving element under such circumstances. Japanese Patent Application Laid-Open No. 2001-58881 discloses a technology in which, after sacrificial fibers aligned in a direction in which light is sought to he waveguided and scintillator powder are sintered, the sacrificial fibers are removed to obtain a porous scintillator, and pores therein are filled with an absorbing member or the like.