Semitransparent monochromators for x-ray imaging based on highly oriented pyrolytic graphite (HOPG)

Alexander G. Touryanski; Igor V. Pirshin; Alexander V. Vinogradov; Nelson G. Publicover; Victor L. Kantsyrev; Inna G. Grigorieva; Alexander A. Antonov

doi:10.1117/12.450796

19 December 2001 Semitransparent monochromators for x-ray imaging based on highly oriented pyrolytic graphite (HOPG)

Alexander G. Touryanski, Igor V. Pirshin, Alexander V. Vinogradov, Nelson G. Publicover, Victor L. Kantsyrev, Inna G. Grigorieva, Alexander A. Antonov

Author Affiliations +

Proceedings Volume 4508, Penetrating Radiation Systems and Applications III; (2001) https://doi.org/10.1117/12.450796
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Semitransparent HOPG monochromators are being investigated with an emphasis on their potential applications in X-ray imaging systems. HOPG plates and films, 5-100micrometers thick and up to 14 cm² in area, were tested. Scanning techniques were used to measure the profiles of local reflectivity and transparency at different monochromator thicknesses. Mosaic spread, (Delta) (omega) , down to 3.6' was recorded. HOPG film areas with average (Delta) (omega) =5' and 6' were equivalent to 4.5 and 10 cm² respectively. The echelon monochromator arrangement produced a sharp increase in reflectivity leading to the possibility of primary beam sweeping. Results to date are very promising for future applications in fields such as medical diagnostics and surgical treatments monitored using digital X-ray cameras.

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Alexander G. Touryanski, Igor V. Pirshin, Alexander V. Vinogradov, Nelson G. Publicover, Victor L. Kantsyrev, Inna G. Grigorieva, and Alexander A. Antonov "Semitransparent monochromators for x-ray imaging based on highly oriented pyrolytic graphite (HOPG)", Proc. SPIE 4508, Penetrating Radiation Systems and Applications III, (19 December 2001); https://doi.org/10.1117/12.450796

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