The fabrication and testing of thick gold Fresnel zone plates for high energy x-ray and charged particle imaging

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Title: The fabrication and testing of thick gold Fresnel zone plates for high energy x-ray and charged particle imaging
Author: Stone, Gary F.
Abstract: Thick, free-standing, gold Fresnel zone plates were fabricated and tested for use as coded apertures for imaging 100 keV x-rays and 6 MeV and 10 MeV protons. Reactive Ion Etching and gold microplating techniques were extended to "thick" structures, to fabricate gold zone plates 75 um thick, with 30 um minimum zone width. Techniques were developed for using high efficiency, high resolution nuclear track detectors to record protons and produce suitable contrast shadowgraphs from the etched nuclear track detectors. The point response function of the zone plate shadow camera was experimentally measured using 100 keV x-rays and 6 MeV and 10 MeV protons. The zone plate camera exhibited diffraction limited results, with higher order resolution of 4 um for 100 keV x-rays, and 9 um for 6 MeV protons.
Record URI: http://hdl.handle.net/1850/8301
Date: 1984-04

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