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1. WO2006095613 - RARE EARTH ACTIVATED ALKALINE EARTH METAL FLUOROHALIDE PHOTOSTIMULABLE PHOSPHOR AND RADIATION IMAGE CONVERSION PANEL USING THE SAME

Publication Number WO/2006/095613
Publication Date 14.09.2006
International Application No. PCT/JP2006/303838
International Filing Date 01.03.2006
IPC
C09K 11/61 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
08containing inorganic luminescent materials
61containing fluorine, chlorine, bromine, iodine or unspecified halogen elements
C09K 11/00 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
11Luminescent, e.g. electroluminescent, chemiluminescent, materials
G21K 4/00 2006.01
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
4Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens
CPC
C09K 11/7733
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
11Luminescent, e.g. electroluminescent, chemiluminescent materials
08containing inorganic luminescent materials
77containing rare earth metals
7728comprising europium
7732Halogenides
7733with alkali or alkaline earth metals
G21K 4/00
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
KTECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
4Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens
Applicants
  • コニカミノルタエムジー株式会社 Konica Minolta Medical & Graphic, Inc. [JP]/[JP] (AllExceptUS)
  • 萩原 清志 HAGIWARA, Kiyoshi [JP]/[JP] (UsOnly)
Inventors
  • 萩原 清志 HAGIWARA, Kiyoshi
Priority Data
2005-06505809.03.2005JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) RARE EARTH ACTIVATED ALKALINE EARTH METAL FLUOROHALIDE PHOTOSTIMULABLE PHOSPHOR AND RADIATION IMAGE CONVERSION PANEL USING THE SAME
(FR) LUMINOPHORE PHOTOSTIMULABLE A BASE DE FLUOROHALOGENURE DE METAL ALCALINOTERREUX ACTIVE PAR UNE TERRE RARE ET ECRAN DE CONVERSION D'IMAGE PAR RAYONNEMENT UTILISANT CELUI-CI
(JA) 希土類賦活アルカリ土類金属フッ化ハロゲン化物輝尽性蛍光体及びそれを用いた放射線画像変換パネル
Abstract
(EN)
Provided are a rare earth activated alkaline earth metal fluorohalide photostimulable phosphor which can provide a high quality radiation image and also is reduced in the lowering of brightness by the X-ray damage due to repeated use; and a radiation image conversion panel using the above phosphor. Use is made of a rare earth activated alkaline earth metal fluorohalide photostimulable phosphor which is represented by the following general formula (1) and exhibits a width of a spectrum having an intensity being 80 % relative to the maximum luminous intensity of 23.0 nm or less. General formula (1) Ba(1-x)M2(x)FBr(y)I(1-y):aM1,bLn,cO wherein M1 is Li, Na, K, Rb or Cs, M2 is Be, Mg, Sr or Ca, Ln is Ce, Pr, Sm, Eu, Gd, Tb, Tm, Dy, Ho, Nd, Er, or Yb, and x and the like are 0 ≤ x ≤ 0.3, 0 ≤ y ≤ 0.9, 0 ≤ a ≤ 0.05, 0 ≤ b ≤ 0.2 and 0 ≤ c ≤ 0.1.
(FR)
L'invention concerne un luminophore photostimulable à base de fluorohalogénure de métal alcalinoterreux activé par une terre rare qui peut fournir une image par rayonnement de haute qualité et présente un faible abaissement de la brillance lors de dégradations provoquées par les rayons X en raison d'une utilisation répétée ; et un écran de conversion d'image par rayonnement utilisant le luminophore ci-dessus. On utilise un luminophore photostimulable à base de fluorohalogénure de métal alcalinoterreux activé par une terre rare qui est représenté par la formule générale (1) suivante et présente une largeur de spectre ayant une intensité de 80 % par rapport à l'intensité lumineuse maximum de 23,0 nm ou moins. Formule générale (1) Ba(1-x)M2(x)FBr(y)I(1-y):aM1, bLn, cO où M1 représente Li, Na, K, Rb ou Cs, M2 représente Be, Mg, Sr ou Ca, Ln représente Ce, Pr, Sm, Eu, Gd, Tb, Tm, Dy, Ho, Nd, Er, ou Yb, et x et analogues satisfont aux relations suivantes 0 = x = 0,3, 0 = y = 0,9, 0 = a = 0,05, 0 = b = 0,2 et 0 = c = 0,1.
(JA)
 本発明は、得られる放射線画像の画質が高画質であり、繰り返し使用によるX線損傷による輝度低下が小さい希土類賦活アルカリ土類金属フッ化ハロゲン化物輝尽性蛍光体とそれを用いた放射線画像変換パネルを提供する。その手段として、下記一般式(1)で表され、最大発光強度に対して80%の強度のスペクトル幅が23.0nm以下である希土類賦活アルカリ土類金属フッ化ハロゲン化物輝尽性蛍光体を用いる。  一般式(1) Ba(1-x)2 (x)FBr(y)(1-y):aM1,bLn,cO (M1はLi、Na、K、Rb、Cs、M2はBe、Mg、Sr、Ca、LnはCe、Pr、Sm、Eu、Gd、Tb、Tm、Dy、Ho、Nd、Er、Yb、また、x等は、0≦x≦0.3、0≦y≦0.9、0≦a≦0.05、0<b≦0.2、0≦c≦0.1)
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