2 November 2000 Recent advances in x-ray source/optic integration
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Close coupling of microfocus x-ray sources and polycapillary collimating optics allows for large collecting angle of the optics for small, parallel beam x-ray diffraction applications. Two polycapillary collimating optics were designed and fabricated for use with a microfocus x-ray tube that has a small spot and short spot-to-BE-window distance (2.2 mm). Both optics generated a quasi-parallel x-ray beam of 1.5 mm in diameter. The x-ray intensity obtained from the Cu-anode source was 1.9 X 109 cps (Cu K(alpha) ) at 40 kV and 60 W, and the beam divergence was measured to be 2.3 mrad. The intensity obtained from the Mo-anode source was 1.3 X 108 cps (Mo K(alpha) ) at 50 kV and 40 W, and the beam divergence was 1.6 mrad. These are equivalent to what one could achieved with a 5.4 kW Cu source and a 1.3 kW Mo source, respectively, when using conventional pinhole collimators. The approaches to achieve small beam divergence using polycapillary optics are discussed.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Scott Snyder, Scott Snyder, Christopher K. Frank, Christopher K. Frank, Dennis L. Harris, Dennis L. Harris, Ning Gao, Ning Gao, } "Recent advances in x-ray source/optic integration", Proc. SPIE 4144, Advances in Laboratory-based X-Ray Sources and Optics, (2 November 2000); doi: 10.1117/12.405884; https://doi.org/10.1117/12.405884


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