Abstract
We propose and demonstrate a coherent laser-plasma point x-ray source in the water window spectral region operating at a repetition rate of up to 100 Hz. The emission from the 10-μm-diameter source is filtered to generate monochromatic radiation at a 3.37 nm wavelength. Soft x-ray fringes of the Young’s interference experiment were obtained with a visibility of 0.62±0.1 with a slit pair of 10.5 μm separation at a distance of 31.7 cm from the source. The source can be used to take either a hologram or transmission scanning x-ray micrograph within a reasonable exposure time of several minutes.
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