Title :
A new X-ray scintillator for digital radiography
Author :
Nagarkar, V.V. ; Tipnis, S.V. ; Miller, S.R. ; Lempicki, A. ; Brecher, C. ; Szupryczynski, P. ; Lingertat, H.
Author_Institution :
Radiat. Monitoring Devices Inc., Watertown, MA, USA
Abstract :
We report a new scintillator based on a transparent ceramic of Lu2O3:Eu. The material has an extremely high density of 9.4 g/cm3 and a light output comparable to CsI:Tl. Its narrow band emission at 610 nm perfectly matches the spectral response of CCDs. To enhance the spatial and contrast resolution, we have developed a special process to pixelate the scintillator and prevent the spread of light within the scintillator volume. The performance of this pixelated device was thoroughly evaluated and found to equal or surpass all other currently known scintillators. 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.
Keywords :
X-ray detection; charge-coupled devices; diagnostic radiography; europium; lutetium compounds; position sensitive particle detectors; solid scintillation detectors; 610 nm; CCD; Lu2O3:Eu; X-ray scintillator; contrast resolution; digital radiography; high density; light output; narrow band emission; pixelated device; readout technologies; scintillator volume; spatial resolution; spectral response; transparent ceramic; Ceramics; Light scattering; Optical scattering; Particle scattering; Phosphors; Powders; Radiation monitoring; Radiography; Telephony; X-ray scattering;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
Print_ISBN :
0-7803-7324-3
DOI :
10.1109/NSSMIC.2001.1008426
