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Publication Citation: Variable Magnification With Kirkpatrick-Baez Optics for Synchrotron X-Ray Microscopy

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Author(s): Terrence J. Jach; A S. Bakulin; S M. Durbin; J Pedulla; A T. Macrander;
Title: Variable Magnification With Kirkpatrick-Baez Optics for Synchrotron X-Ray Microscopy
Published: May 01, 2006
Abstract: We describe the distinction between the operation of a short focal lengthx-ray microscope forming a real image with a laboratory source (convergentillumination) and with a highly collimated intense beam from a synchrotronlight source (K\{o}hler illumination). We demonstrate the distinction witha Kirkpatrick-Baez microscope consisting of short focal length multilayermirrors operating at an energy of 8 keV. In addition to realizingimprovements in the resolution of the optics, the synchrotron radiation microscope is not limited to the usual single magnification at a fixed image plane. Higher magnification images are produced by projection in the limit of geometrical optics with a collimated beam. The ultimate limits of this magnificationresult from diffraction by the specimen and are determined by thesample position relative to the focal point of the optic. We presentcriteria by which the diffraction is minimized.
Citation: Journal of Research (NIST JRES) -
Volume: 111 No. 3
Keywords: diffraction limit;Kirkpatrick-Baez;microscopy;multilayer mirror;x-ray optics
Research Areas: Nanotechnology