2 November 2000 Development of polycapillary x-ray optics for scatter rejection
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Abstract
Many medical imaging and industrial applications for x rays require large area optics with good scatter rejection. Preliminary scatter rejection and contrast measurements show that a prototype long borosilicate optic increases the contrast by a factor of 1.7 by decreasing the scatter transmission nearly a factor of 10 at 20 keV. Since borosilicate optics have higher scatter transmissions at high energies, the optics have to be fairly long to give good scatter rejection at high energies. However, long optics are complex to manufacture and have increased defect rates. Lead glass would allow the optic to be much shorter and still give good contrast enhancement, because of the superior absorption of leaded glass. In order to investigate the feasibility of using leaded glass polycapillary optics for these applications, measurements and simulations have been performed on the behavior of leaded glass polycapillary fibers in the 9 - 80 keV energy range.
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- Suparmi, - Suparmi, Padiyar Cari, Padiyar Cari, Walter M. Gibson, Walter M. Gibson, Carolyn A. MacDonald, Carolyn A. MacDonald, } "Development of polycapillary x-ray optics for scatter rejection", Proc. SPIE 4144, Advances in Laboratory-based X-Ray Sources and Optics, (2 November 2000); doi: 10.1117/12.405895; https://doi.org/10.1117/12.405895
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