Claims
- 1. A transparent crystalline phosphor consisting essentially of lutetium yttrium oxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Lu(2−x−z)YxMzSiO5, wherein 0.00≦x≦1.95, and 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tb, Tm, Eu, Yb, and Pr.
- 2. The transparent crystalline phosphor of claim 1, wherein 0.20≦x≦1.80.
- 3. A transparent crystalline phosphor consisting essentially of lutetium oxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Lu(2−z)MzSiO5, wherein 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tb, Tm, Eu, Yb, and Pr.
- 4. A radiation detector, comprising:(a) a transparent crystalline phosphor consisting essentially of lutetium yttrium oxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Lu(2−x−z)YxMzSiO5, wherein 0.00≦x≦1.95, wherein 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tb, Tm, Eu, Yb, and Pr; and (b) a photodetector optically coupled to said phosphor for detecting light from said phosphor.
- 5. The radiation detector of claim 4, wherein 0.20≦x≦1.80.
- 6. A radiation detector, comprising:(a) a transparent crystalline phosphor consisting essentially of lutetium oxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Lu(2−z)MzSiO5, wherein 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tb, Tm, Eu, Yb, and Pr; and (b) a photodetector optically coupled to said phosphor for detecting light from said phosphor.
- 7. A transparent crystalline phosphor consisting essentially of lutetium gadolinium oxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Lu(2−x−z)GdxMzSiO5, wherein 0.00≦x≦1.95, wherein 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tb, Tm, Eu, Yb, and Pr.
- 8. The transparent crystalline phosphor of claim 7, wherein 0.20≦x≦1.80.
- 9. A radiation detector, comprising:(a) a transparent crystalline phosphor consisting essentially of lutetium gadolinium dxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Lu(2−x−z)GdxMzSiO5, wherein 0.05≦x≦1.95, wherein 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tb, Tm, Eu, Yb, and Pr.; and (b) a photodetector optically coupled to said phosphor for detecting light from said phosphor.
- 10. The radiation detector of claim 9, wherein 0.20≦x≦1.80.
- 11. A transparent crystalline phosphor consisting essentially of gadolinium yttrium oxyorthosilicate activated with a rare-earth metal dopant M and having the general formula Gd(2−x−z)YxMzSiO5, wherein 0.00≦x≦1.95, wherein 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tm, Eu, Yb, and Pr.
- 12. The transparent crystalline phosphor of claim 11, wherein 0.20≦x≦1.80.
- 13. The transparent crystalline phosphor of claim 11, wherein x=0.
- 14. A radiation detector, comprising:(a) a transparent crystalline phosphor consisting essentially of activated gadolinium yttrium oxyorthosilicate having the general formula Gd(2−x−z)YxMzSiO5, wherein 0.00≦x≦1.95, and 0.001≦z≦0.02, and wherein M is selected from the group consisting of Sm, Tm, Eu, Yb, and Pr; and (b) a photodetector optically coupled to said phosphor for detecting light from said phosphor.
- 15. The radiation detector of claim 14, wherein 0.20≦x≦1.80.
- 16. The radiation detector of claim 14, wherein x=0.
STATEMENT REGARDING FEDERAL RIGHTS
This invention was made with government support under Contract No. W-7405-ENG-36 awarded by the U.S. Department of Energy. The government has certain rights in the invention.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
5003181 |
Morlotti |
Mar 1991 |
A |
5540947 |
Morlotti et al. |
Jul 1996 |
A |
6573654 |
Juestel et al. |
Jun 2003 |
B2 |
Non-Patent Literature Citations (2)
Entry |
Brandle et al, “Czochralski Growth of Rare-Earth Orthosilicates (Ln2SiO5)”, Jour. Xtal Growth, vol. 79, 1986, pp. 308-315.* |
Shmulovich et al ,“Single-Crystal Rare-Earth-Doped Yttrium Orthosilicate Phosphors”, J.Electrochem. Soc.:Solid State Science and Technology, Dec. 1988, pp. 3141-3151. |