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Proceedings Paper

Semitransparent monochromators for x-ray imaging based on highly oriented pyrolytic graphite (HOPG)
Author(s): Alexander G. Touryanski; Igor V. Pirshin; Alexander V. Vinogradov; Nelson G. Publicover; Victor L. Kantsyrev; Inna G. Grigorieva; Alexander A. Antonov
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Paper 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.

Paper Details

Date Published: 19 December 2001
PDF: 7 pages
Proc. SPIE 4508, Penetrating Radiation Systems and Applications III, (19 December 2001); doi: 10.1117/12.450796
Show Author Affiliations
Alexander G. Touryanski, P.N. Lebedev Physical Institute (Russia)
Igor V. Pirshin, P.N. Lebedev Physical Institute (Russia)
Alexander V. Vinogradov, P.N. Lebedev Physical Institute (Russia)
Nelson G. Publicover, Univ. of Nevada/Reno (United States)
Victor L. Kantsyrev, Univ. of Nevada/Reno (United States)
Inna G. Grigorieva, Optigraph Ltd. (Russia)
Alexander A. Antonov, Optigraph Ltd. (Russia)

Published in SPIE Proceedings Vol. 4508:
Penetrating Radiation Systems and Applications III
H. Bradford Barber; Hans Roehrig; F. Patrick Doty; Richard C. Schirato; Edward J. Morton, Editor(s)

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