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Imaging of selenium in plants using tapered metal monocapillary optics
Ingrid J Pickering1, Gregory Hirsch, Roger C Prince
1Stanford Synchrotron Radiation Laboratory, SLAC, 2575 Sand Hill Road, MS 69, Menlo Park, CA 94025, USA. pickering@ssrl.slac.stanford.edu
Journal of Synchrotron Radiation
|April 26, 2003
Abstract:
Tapered metal monocapillary optics provide a potential alternative to conventional methods of producing small X-ray beams. This paper presents the initial results of chemically specific imaging using such devices. Cellular resolution of organic selenium is obtained in a longitudinal section of mature Astragalus bisulcatus, a selenium hyperaccumulating plant. This work demonstrates the utility of metal monocapillary optics for imaging dilute levels of target elements in biological tissues.