Recent advances in x-ray source/optic integration

Scott Snyder; Christopher K. Frank; Dennis L. Harris; Ning Gao

doi:10.1117/12.405884

2 November 2000 Recent advances in x-ray source/optic integration

Scott Snyder, Christopher K. Frank, Dennis L. Harris, Ning Gao

Proceedings Volume 4144, Advances in Laboratory-based X-Ray Sources and Optics; (2000) https://doi.org/10.1117/12.405884
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

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.

Citation Download Citation

Scott Snyder, Christopher K. Frank, Dennis L. Harris, and 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); https://doi.org/10.1117/12.405884

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