Veneta G. Tsoukala - Clifton Park NY Charles D. Greskovich - Schenectady NY
Assignee:
General Electric Company - Schenectady NY
International Classification:
G01T 1202
US Classification:
250361R
Abstract:
In a computed tomography machine employing a luminescent material in a scintillator in which a significant factor in afterglow is the release of holes from hole traps in the scintillator material, afterglow in the luminescent material is substantially reduced by adding a hole-trapping species to the scintillator composition which successfully competes with the hole traps in the basic scintillator composition. For a gadolinium gallium garnet scintillator activated with chromium, the addition of cerium reduces afterglow in this manner.
Veneta G. Tsoukala - Clifton Park NY Charles D. Greskovich - Schenectady NY
Assignee:
General Electric Company - Schenectady NY
International Classification:
C09K 1180
US Classification:
2523014R
Abstract:
Afterglow in a luminescent material in which a significant factor in afterglow is the release of holes from hole traps in the scintillator material is substantially reduced by adding a hole-trapping species to the scintillator composition which successfully competes with the hole traps in the basic scintillator composition. In gadolinium gallium garnet activated with chromium, the addition of cerium, terbium or praseodymium reduces afterglow in this manner.