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Luminous material for scintillator comprising single crystal of Yb mixed crystal oxide

外国特許コード F110005710
整理番号 Y0259WO
掲載日 2011年9月12日
出願国 アメリカ合衆国
出願番号 50942503
公報番号 20050161638
公報番号 7347956
出願日 平成15年3月25日(2003.3.25)
公報発行日 平成17年7月28日(2005.7.28)
公報発行日 平成20年3月25日(2008.3.25)
国際出願番号 JP2003003665
国際公開番号 WO2003080903
国際出願日 平成15年3月25日(2003.3.25)
国際公開日 平成15年10月2日(2003.10.2)
優先権データ
  • 特願2002-086649 (2002.3.26) JP
  • 2003WO-JP03665 (2003.3.25) WO
発明の名称 (英語) Luminous material for scintillator comprising single crystal of Yb mixed crystal oxide
発明の概要(英語) (US7347956)
Disclosed is a luminescent material for scintillators, which comprises a single crystal of an Yb-containing mixed-crystal oxide having a base crystal consisting of a garnet single crystal or a borate single crystal.
The oxide single crystal has a composition represented by either one selected from the group consisting of R3Al5O12, R3Ga5O12, Li6R(BO3)3, LaR2Ga3O12 and Gd3R2Ga3O12, wherein R is a mixture of Yb and either one of Y, Gd and Lu.
The Yb as an element capable of forming an optically active state called CTS together with a neighboring negative ion (oxygen ion).
特許請求の範囲(英語) [claim1]
1. A luminescent material for scintillators, comprising a single crystal of an Yb-containing mixed-crystal oxide which has a composition represented by either one of R3Al5O12, R3Ga5O12 and Li6R(BO3)3, wherein R is a mixture of Yb and either one of Gd and Lu, and said Yb as an element capable of forming an optically active state called CTS together with a neighboring negative ion adjacent thereto, wherein the molar ratio of either one of Gd and Lu to Yb in said R satisfies the conditions expressed by the following formulas:
[claim2]
1.04x+1.02y <= 1.03;

x+y=1;

0<x<1;
and
0<y<1,
wherein x is a molar ratio of Yb, and y is a molar ratio of either one of Gd and Lu.
[claim3]
2. A luminescent material for scintillators, comprising a single crystal of an Yb-containing mixed-crystal oxide which has a composition represented by either one of La3R2Ga3O12 and Gd3R2Ga3O12, wherein R is a mixture of Yb and either one of Y, Gd and Lu, and said Yb as an element capable of forming an optically active state called CTS together with a neighboring negative ion adjacent thereto, wherein the molar ratio of either one of Y, Gd and Lu to Yb in said R satisfies the conditions expressed by the following formulas:
[claim4]
1.04x+1.02y <= 1.03;

x+y=1;

0<x<1;
and
0<y<1,
wherein x is a molar ratio of Yb, and y is a molar ratio of either one of Y, Gd and Lu.
[claim5]
3. A luminescent material for scintillators, comprising a single crystal of an Yb-containing mixed-crystal oxide which has a composition represented by either one of R3Ga5O12 and Li6R(BO3)3, wherein R is a mixture of Yb and Y, and said Yb as an element capable of forming an optically active state called CTS together with a neighboring negative ion adjacent thereto, wherein the molar ratio of Y to Yb in said R satisfies the conditions expressed by the following formulas:
[claim6]
1.04x+1.02y <= 1.03;

x+y=1;

0<x<1;
and
0<y<1,
wherein x is a molar ratio of Yb, and y is a molar ratio of Y.
  • 発明者/出願人(英語)
  • FUKUDA TSUGUO
  • YOSHIKAWA AKIRA
  • TSUZAKI TAKASHI
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
国際特許分類(IPC)
米国特許分類/主・副
  • 252/301.400R
  • 117/944
  • 117/945
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