Title:
ILLUMINANT AND RADIATION DETECTOR
Document Type and Number:
WIPO Patent Application WO/2015/166999
Kind Code:
A1
Abstract:
[Problem] To provide an illuminant for which fluorescence life is short, transparency is high, and luminescence is high, and a radiation detector using the illuminant. Further, to provide an illuminant which is suitable as an illuminant for a radiation detector for gamma rays, x-rays, α-rays, and neutron rays, and for which radiation resistance is high, fluorescence attenuating time is short, and fluorescence strength is high, and a radiation detector that uses such illuminant. [Solution] Provided is an illuminant that has a garnet structure that uses Ce3+ luminescence of a 4f5d level. The illuminant has a garnet structure represented by general formula CexRE3-xM5+yO12+3y/2 (where, 0.0001≤x≤0.3, 0≤y≤0.5 or 0≤y≤-0.5; M is at least one selected from Al, Lu, Ga, and Sc; and RE is at least one selected from La, Pr, Gd, Tb, Yb, Y, and Lu), and the illuminant includes a garnet illuminant in which at least one type of monovalent or divalent cation is co-doped at a molar ratio of no more than 7000ppm with respect to total cations.
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Inventors:
KAMADA KEI (JP)
YOSHIKAWA AKIRA (JP)
YOKOTA YUUI (JP)
KUROSAWA SHUNSUKE (JP)
SHOJI YASUHIRO (JP)
YOSHIKAWA AKIRA (JP)
YOKOTA YUUI (JP)
KUROSAWA SHUNSUKE (JP)
SHOJI YASUHIRO (JP)
Application Number:
PCT/JP2015/063032
Publication Date:
November 05, 2015
Filing Date:
April 30, 2015
Export Citation:
Assignee:
UNIV TOHOKU (JP)
International Classes:
C09K11/80; C09K11/00; C09K11/77; G01T1/20; G01T3/06; H01L31/08
Domestic Patent References:
| WO2013025713A1 | 2013-02-21 |
Foreign References:
| JP2013043960A | 2013-03-04 | |||
| JPS6454092A | 1989-03-01 | |||
| JPH09110600A | 1997-04-28 | |||
| JPH10293180A | 1998-11-04 | |||
| JPH0741760A | 1995-02-10 | |||
| JP2007515527A | 2007-06-14 | |||
| JP2006321974A | 2006-11-30 | |||
| JP2013028667A | 2013-02-07 |
Other References:
See also references of EP 3138891A4
Attorney, Agent or Firm:
SUDA Atsushi et al. (JP)
Atsushi Suda (JP)
Atsushi Suda (JP)
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