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Polycapillary X-Ray Optic Spectral Gain and Transmission



J E. Gormley, Eric B. Steel, Q Xiao, Terrence J. Jach


Polycapillary x-ray optics are gaining increased attention as their transmission characteristics and manufacturing difficulties are better understood. This paper reports experimental results obtained with an optic that was designed for use with both Mo KΑ [17.5 keV] and Cu KΑ [8 keV]. The spectral gain function from 4 to 30 keV was determined from measurements made with a Si[Li] detector, and the results were compared with Monte Carlo simulations. The spatial variation in the spectral transmission was examined with both a Si[Li] detector and a magnifying x-ray CCD camera. The results show that even though the individual capillaries are tapered, their performance is well described by a simple parabolic relationship between the radius of curvature and the maximum energy transmitted derived for capillaries of constant diameter.
X-Ray Spectrometry


x-ray focusing, x-ray optics, x-rays


Gormley, J. , Steel, E. , Xiao, Q. and Jach, T. (1999), Polycapillary X-Ray Optic Spectral Gain and Transmission, X-Ray Spectrometry (Accessed April 22, 2024)
Created April 1, 1999, Updated February 17, 2017