Radiant energy – Invisible radiant energy responsive electric signalling – With or including a luminophor
Patent
1994-02-28
1994-11-01
Cooper, Jack
Radiant energy
Invisible radiant energy responsive electric signalling
With or including a luminophor
G01T 1202
Patent
active
053605578
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.
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D. J. Robbins et al., "The Effects of Core Structure on Radiative and Non-Radiative Recombinations at Metal Ion Substituents in Semiconductors and Phosphors", Advances in Physics, vol. 27, No. 4, 1978, pp. 499-532 no month.
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Greskovich Charles D.
Tsoukala Veneta G.
Cooper Jack
General Electric Company
Snyder Marvin
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