Stimulable cerium activated lutetium borate phosphor

Details Stimulable cerium activated lutetium borate phosphor Stimulable cerium activated lutetium borate phosphor

2007-06-05

2007-06-05

Gagliardi, Albert J. (Department: 2884)

Radiant energy

Invisible radiation responsive nonelectric signalling

Luminescent device

C252S30140R, C428S690000

Reexamination Certificate

active

11103466

ABSTRACT:
A cerium activated lutetium borate phosphor of the following formula (I):in-line-formulae description="In-line Formulae" end="lead"?(Lux,Lny)BO3:aCe,bA   (I)in-line-formulae description="In-line Formulae" end="tail"?in which Ln is at least one rare earth element selected from the group consisting of Y, La and Gd; A is at least one element selected from the group consisting of Pr, Nd, Pm, Sm, Eu, Tb, Dy, Ho, Er, Tm, Yb and Zr; and x, y, a and b are numbers satisfying the conditions of0.5≦x<1, 0≦y<0.5, 0<a≦0.2, 0≦b≦0.2and x+y+a+b=1.0, gives a stimulated emission off when it is excited with an electromagnetic wave after exposing to a radiation such as X-rays.

REFERENCES:
patent: 4841530 (1989-06-01), Chai et al.
patent: 4883970 (1989-11-01), Page
patent: WO 200129147 (2001-04-01), None

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