The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 08, 2019
Filed:
Apr. 30, 2015
Tohoku Techno Arch Co., Ltd., Sendai-shi, Miyagi, JP;
C & a Corporation, Sendai-shi, Miyagi, JP;
Kei Kamada, Sendai, JP;
Akira Yoshikawa, Sendai, JP;
Yuui Yokota, Sendai, JP;
Shunsuke Kurosawa, Sendai, JP;
Yasuhiro Shoji, Sendai, JP;
TOHOKU TECHNO ARCH CO., LTD., Sendai-shi, JP;
C & A CORPORATION, Sendai-shi, JP;
Abstract
An illuminant has a short fluorescence lifetime, high transparency, and high light yield and a radiation detector uses the illuminant. The illuminant is appropriate for a radiation detector for detecting gamma-rays, X-rays, α-rays, and neutron rays, and has high radiation resistance, a short fluorescence decay time and high emission intensity. The illuminant has a garnet structure using emission from the 4f5d level of Ce, and includes a garnet illuminant prepared by co-doping of at least one type of monovalent or divalent cation at a molar ratio of 7000 ppm or less with respect to all cations, to an illuminant having a garnet structure represented by general formula CeREMO(where 0.0001≤x≤0.3, 0≤y≤0.5 or 0≤y≤−0.5, M is one type or two or more types selected from Al, Lu, Ga, and Sc, and RE is one type or two or more types selected from La, Pr, Gd, Tb, Yb, Y, and Lu).