Mitsubishi Chemical Corporation

Tohoku University

Kentaro Horibe

Naoto Kijima

Akira Yoshikawa

Kyota Ueda

Shunsuke Kurosawa

Keiji Yamahara

Masayoshi Mikami

Koji Hazu

Hiroyuki Imura

Satoshi Shimooka

Tetsuya Kawano

The present invention aims to provide a scintillator which has a short fluorescence decay time, whose fluorescence intensity after a period of time following radiation irradiation is low, and which shows largely improved light-transmittance. A scintillator represented by the following General Formula (1), the scintillator including Zr, having a Zr content of not less than 1500 ppm by mass therein, and being a block of a sintered body. QMO:A . . . (1) (wherein in General Formula (1), Q includes at least one or more kinds of divalent metallic elements; M includes at least Hf; and x, y, and z independently satisfy 0.5≤x≤1.5, 0.5≤y≤1.5, and 0.7≤z≤1.5, respectively).

Scintillator and radiation detector

To provide a green phosphor with high conversion efficiency of blue of near-ultraviolet light and excellent color purity, a multinary oxynitride phosphor represented by the general formula [I] is proposed.M1BaM2LON&#x2003;&#x2003;[I]In the formula [I], Mrepresents Cr, Mn, Fe, Ce, Pr, Nd, Sm, Eu, Tb, Dy, Ho, Er, Tm and Yb, Mrepresents Sr, Ca, Mg and Zn, L represents metal elements belonging to the fourth group or the fourteenth group of the periodic table, and x, y, z, u, v and w are the numeric values in the following ranges:0.00001&#x2266;&#x2266;30&#x2266;&#x2266;2.999992.6&#x2266;&#x2266;30&#x3c;&#x2266;116&#x3c;&#x2266;250&#x3c;&#x2266;17.

Multinary oxynitride phosphor, and light emitting device, image display, illuminating device and phosphor-containing composition using the same, and multinary oxynitride

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Ushiku, Japan

Kentaro Horibe