Needle-shaped x-ray fluorescent material and method for...

Details Needle-shaped x-ray fluorescent material and method for... Needle-shaped x-ray fluorescent material and method for...

2007-03-13

2007-03-13

Chen, Bret (Department: 1762)

Coating processes

Electrical product produced

Fluorescent or phosphorescent base coating

C427S069000, C427S255390

Reexamination Certificate

active

10522318

ABSTRACT:
In a method for vapor-depositing a substrate with a layer of a needle-shaped x-ray fluorescent material containing at least one alkali metal, alkali halide phases and an alkali halide are mixed in a vapor phase and are vapor-deposited on the substrate. A needle-shaped fluorescent material is thereby produced having the formula((M′+⁢H′-)a⁢(M′′+⁢H′′-)(1-a))k⁢:⁢⁢(Mx′+⁢Syz+⁢Hx′-⁢Hz*⁢y′′′-)b⁢(Mx′′+⁢Syz+⁢Hx′′-⁢Hz*⁢y′′′-)c⁢(Mx′+⁢Syz+⁢Hx′′-⁢Hz*⁢y′′′-)d⁢(Mx′′+⁢Syz+⁢Hx′-⁢Hz*⁢y′′′-)ewherein M+is at least one metal ion from the group Na, K, Rb and Cs, H−is at least one halide from the group F, Cl, Br and I and Sz+is at least one lanthanide ion from the group La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb or Lu.

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“New Needle-crystalline CR Detector,” Leblans et al., Medical Imaging 2001: Physics of Medical Imaging, Antonuk et al., Ed., Proc. of Spie, vol. 4320 (2001) pp. 59-67.

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