Top > Search of International Patents > Luminous material for scintillator comprising single crystal of Yb mixed crystal oxide

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

Foreign code F110005710
File No. Y0259WO
Posted date Sep 12, 2011
Country United States of America
Application number 50942503
Gazette No. 20050161638
Gazette No. 7347956
Date of filing Mar 25, 2003
Gazette Date Jul 28, 2005
Gazette Date Mar 25, 2008
International application number JP2003003665
International publication number WO2003080903
Date of international filing Mar 25, 2003
Date of international publication Oct 2, 2003
Priority data
  • P2002-086649 (Mar 26, 2002) JP
  • 2003WO-JP03665 (Mar 25, 2003) WO
Title Luminous material for scintillator comprising single crystal of Yb mixed crystal oxide
Abstract (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).
Scope of claims [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.
  • Inventor, and Inventor/Applicant
  • FUKUDA TSUGUO
  • YOSHIKAWA AKIRA
  • TSUZAKI TAKASHI
  • JAPAN SCIENCE AND TECHNOLOGY AGENCY
IPC(International Patent Classification)
U.S. Cl./(Sub)
  • C09K011/77S12
  • C09K011/77S2H
  • C09K011/77S6
  • C30B015/08
  • C30B029/22
  • C30B029/28
  • G21K004/00
Please contact us by E-mail or facsimile if you have any interests on this patent.

PAGE TOP

close
close
close
close
close
close