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14 June 2023 Gratings-based phase contrast imaging above 160 kV
Dustin Kasparek, Luke Campbell, Nikhil Deshmukh, Erin A. Miller
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Proceedings Volume 12531, Anomaly Detection and Imaging with X-Rays (ADIX) VIII; 125310H (2023) https://doi.org/10.1117/12.2664162
Event: SPIE Defense + Commercial Sensing, 2023, Orlando, Florida, United States
Abstract
Gratings-based phase contrast imaging provides additional materials signatures that can enhance detection for security screening. However, screening of larger objects requires more penetrating energies, which presents a challenge to gratings-based systems: more penetrating x-rays are more difficult to pattern, while the cross sections for small angle scattering are reduced. We present a study of phase contrast x-ray imaging at endpoint energies above 160 kV, discussing pattern visibility, spectral corrections, and detection of material microstructure. We then discuss considerations for potential implementation.
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Dustin Kasparek, Luke Campbell, Nikhil Deshmukh, and Erin A. Miller "Gratings-based phase contrast imaging above 160 kV", Proc. SPIE 12531, Anomaly Detection and Imaging with X-Rays (ADIX) VIII, 125310H (14 June 2023); https://doi.org/10.1117/12.2664162
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KEYWORDS
Phase contrast
Scattering
Visibility
X-ray imaging
X-rays
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