Fluorozirconate-based glass ceramic x-ray detectors for digital radiography.

Conference · Sun Apr 01 04:00:00 EDT 2007 · Radiat. Meas.

DOI:https://doi.org/10.1016/j.radmeas.2007.01.056· OSTI ID:929223

Schweizer, S; Johnson, J A

Two-dimensional indirect digital X-ray detectors use either a storage phosphor or a scintillator as an imaging plate. A storage phosphor forms a latent X-ray image, which is subsequently readout by a photostimulable luminescence process. A scintillator produces a visible image during X-ray illumination. Commercial storage-phosphor image plates have relatively poor spatial resolution because of light scattering during the readout. To improve their image resolution, europium (II)-doped fluorozirconate (FZ)-based glasses containing barium chloride nanoparticles have been developed. X-ray imaging showed that these storage-phosphor plates can resolve features as small as 17 {micro}m. By using appropriate thermal-processing conditions, the FZ-based glass ceramics can also be made into transparent glass ceramic scintillators. Imaging tests showed that these scintillators have a spatial resolution and efficiency comparable to those of a single-crystal CdWO{sub 4} scintillator. These results demonstrate that FZ-based glass ceramics are good candidates for digital radiography, either for storage phosphor or scintillator applications.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NIH
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 929223
• Report Number(s): ANL/ET/CP-118761
• Conference Information: Journal Name: Radiat. Meas. Journal Issue: 4-5 ; Apr./May 2007 Journal Volume: 42
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARIUM CHLORIDES
CERAMICS
DOPED MATERIALS
EUROPIUM
GLASS
ORGANIC FLUORINE COMPOUNDS
PHOSPHORS
RADIATION DETECTORS
SPATIAL RESOLUTION
X-RAY DETECTION
ZIRCONATES