A new X-ray scintillator for digital radiography

The authors report a new scintillator based on a transparent ceramic of Lu/sub 2/O/sub 3/:Eu. The material has an extremely high density of 9.4 g/cm/sup 3/ and a light output comparable to CsI:Tl. Its narrow-band emission at 610 nm perfectly matches the spectral response of charge coupled devices (C...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 2003-06, Vol.50 (3), p.297-300
Main Authors: Nagarkar, V.V., Tipnis, S.V., Miller, S.R., Lempicki, A., Brecher, C., Szupryczynski, P., Lingertat, H.
Format: Article
Language:English
Subjects:
CCD cameras
Ceramics
Charge coupled devices
Devices
Digital
Emission
Light scattering
Optical materials
Optical scattering
Particle scattering
Phosphors
Powders
Radiography
Spreads
X-ray scattering
X-rays
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Summary:The authors report a new scintillator based on a transparent ceramic of Lu/sub 2/O/sub 3/:Eu. The material has an extremely high density of 9.4 g/cm/sup 3/ and a light output comparable to CsI:Tl. Its narrow-band emission at 610 nm perfectly matches the spectral response of charge coupled devices (CCDs). To enhance the spatial and contrast resolution, the authors have developed a special process to pixelate the scintillator and prevent the spread of light within the scintillator volume. The imaging performance of this pixelated device was evaluated using a thermoelectrically cooled CCD camera. The new scintillator is expected to play a major role in digital radiographic systems when readout technologies capable of taking advantage of the transparency are developed further.
ISSN:0018-9499
1558-1578
DOI:10.1109/TNS.2003.812432