A light emitter emitting composition comprising the same, and Pr-doped inorganic compound, a light emitting device, solid-state laser apparatus, the ionizing radiation detecting device

摘要

A Pr-doped inorganic compound contains a solid solution having been formed by substitution of at least a part of at least one kind of substitutable ions, which are contained at a substitutable ion site in a matrix oxide, by Pr. The Pr-doped inorganic compound satisfies the condition represented by the formula: wherein r1 represents the mean ionic radius of ionic radiuses of all of elements, including Pr, which elements constitute the substitutable ion site having been doped with Pr, and r2 represents the ionic radius of Pr.