Monochromatic x-ray radiation from a vacuum diode with a laser-irradiated cathode
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Investigation of spectral, spatial and temporal characteristics of a monochromatic point x-ray source of photon energy approximately 5 keV has been carried out. The source was set up using a laser produced titanium or aluminum plasma as a cathode and a point-tip titanium anode. Parameters of x-ray radiation in Ti K-shells are 1) spectral brightness of approximately 1021 photons/cm2.sec.sr.keV, 2) spatial size approximately 250 microns, and 3) x-ray pulse duration less than 20 ns.
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