The X-ray radiation from cathode spot fragments in laser-inducedvacuum discharges |
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Authors: | Vogel N. |
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Affiliation: | Dept. of Phys., Opt. Spectrosc., & Molecule Phys., Tech. Univ. Chemnitz; |
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Abstract: | The temporal evolution of X-ray emission of laser-induced discharges was investigated by means of a picosecond X-ray streak camera. Point-like structures with small divergence and thin hot layers of intense X-ray radiation with life time from 30 ps to 1.5 ns in a spectral range 100 eV-10 keV have been found in a comparatively low voltage vacuum discharge (U≈150 V-2.7 kV) initiated by picosecond laser beam. The radiation of laser induced breakdown was investigated just after breakdown as well as with a delay time (up to 20 ns) relative to the ignition point by the laser beam in order to eliminate the X-ray radiation coming from the laser-produced plasma |
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