Proceedings PaperCoded Imaging Of Relativistic Electron Beam Targets
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Fresnel zone plate apertures have been used for coded imaging of x-rays generated by relativistic electron beams striking metallic targets. Calculations are presented which specify the design of the imaging system for 100 μm resolution. Results are given both for d.c. tests with a several μA, 0.75 MeV beam and for the 300 kA, 1 MeV Hydra machine which pulses for 80 nsec. An improvement in resolution compared to pinhole techniques is seen in the decoded images.