SCINTILLATOR PANEL, RADIATION DETECTOR, AND PROCESSES FOR PRODUCING THESE

摘要

Provided are a scintillator panel and a radiation detector which give a radiation image reduced in sensitivity unevenness and sharpness unevenness. Also provided are processes for producing the scintillator and the detector. The scintillator panel comprises a support and, deposited thereon, a fluorescent-substance layer comprising columnar crystals of a fluorescent substance which have been formed by the vapor deposition method. The panel is characterized in that the columnar crystals of a fluorescent substance comprise cesium iodide (CsI) as a base ingredient and thallium (Tl) as an activator ingredient and have, in a root part thereof, a layer containing no thallium, and that the coefficient of variation in thallium concentration in the plane of the fluorescent-substance layer is 40% or lower.