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AssigneeSaint-Gobain Cristaux Et Detecteurs
InventorsBernard Ferrand, Bruno Viana, Ludivine Pidol, Pieter Dorenbos
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The invention relates to an inorganic scintillator material of formula Lu(2-y)Y(y-z-x) CexMzSi(1-v)M′vO5, in which: M represents a divalent alkaline earth metal and M′ represents a trivalent metal, (z+v) being greater than or equal to 0.0001 and less than or equal to 0.2; z being greater than or equal to 0 and less than or equal to 0.2; v being greater than or equal to 0 and less than or equal to 0.2; x being greater than or equal to 0.0001 and less than 0.1; and y ranging from (x+z) to 1. In particular, this material may equip scintillation detectors for applications in industry, for the medical field (scanners) and/or for detection in oil drilling. The presence of Ca in the crystal reduces the afterglow, while stopping power for high-energy radiation remains high.
An inorganic scintillator material of formula Lu(2-y)Y(y-z-x) CexCazSiO5, wherein:
An inorganic LYSO-type scintillator material comprising Lu, Si, O, Y and M or M′ in which M represents a divalent alkaline earth metal ion and M′ represents a trivalent metal wherein M or M′ reduces an afterglow.
An inorganic LYSO-type scintillator material comprising Lu, Si, O, Y and Ca, wherein Ca reduces an afterglow.
An inorganic LYSO-type scintillator material comprising Lu, Si, O, Y and Al, wherein Al reduces an afterglow.
An inorganic LYSO-type scintillator material comprising a trivalent rare earth ion, Si, O, Y and M or M′ in which M represents a divalent alkaline earth metal ion and M′ represents a trivalent metal wherein M or M′ reduces an afterglow.
A method for reducing the afterglow of an inorganic LYSO-type scintillator material comprising Lu, Si, O wherein a divalent alkaline earth metal ion M, or a trivalent metal M′ selected from the group consisting of Al, Ga, and In is added to said material.
Dependencies are inferred from the claim text.