Abstract

A new soft X-ray source has been developed and characterized. X-rays are generated by the illumination of a multialkali photocathode with visible light to produce electrons that are accelerated onto a thin metal film anode. The novel feature of the design is that the photocathode and anode are in close proximity so that the X-ray emission is a spatial and temporal replica of the input light signal. Measurements of the X-ray emission brightness, energy spectrum and minimum source size are presented, and some unique applications of the new source are discussed.

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