Developments in Gd2O2S based pixelated-metallic aperture arrays

Brenden W. Wiggins; Cameron G. Richards; Don R. Johnson; Oliver Humbach; James F. Hunter; Markus P. Hehlen

doi:10.1117/12.2612719

18 April 2022 Developments in Gd₂O₂S based pixelated-metallic aperture arrays

Brenden W. Wiggins, Cameron G. Richards, Don R. Johnson, Oliver Humbach, James F. Hunter, Markus P. Hehlen

Proceedings Volume 12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI; 120470B (2022) https://doi.org/10.1117/12.2612719
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States

Abstract

Radiographic imaging represents a vital capability within non-destructive assessment, quality control and fundamental science. This study focuses on Gd₂O₂S:Tb³⁺ based scintillating composites incorporated into pixelated-metallic aperture screens, attached to amorphous silicon-based flat panels. Performance metrics are explored through coupled MCNP6- FRED simulations; here, scintillation light transport is investigated as a function of pixelated screen geometry and optical characteristics. For the first time, we demonstrate image acquisition with a 100 micron thick pixelated metallic aperture screen. The results demonstrate promising improvements to x-ray interaction rates while maintaining image quality.

Conference Presentation

Citation Download Citation

Brenden W. Wiggins, Cameron G. Richards, Don R. Johnson, Oliver Humbach, James F. Hunter, and Markus P. Hehlen "Developments in Gd₂O₂S based pixelated-metallic aperture arrays", Proc. SPIE 12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI, 120470B (18 April 2022); https://doi.org/10.1117/12.2612719

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