X-ray and optical diagnostics of femtosecond laser-produced plasmas
- 1 January 1992
- proceedings article
- Published by AIP Publishing in AIP Conference Proceedings
- Vol. 257 (1) , 58-67
- https://doi.org/10.1063/1.42480
Abstract
Layered targets of aluminum and fused silica have been irradiated by 80 fs prepulse free laser pulses at 1017 W/cm2 laser irradiance. Time‐integrated x‐ray spectra obtained in the 0.7–0.9 nm wavelength range show both resonance lines from Al11+ ions and Kα lines from Al0+‐Al5+ ions. Conversion efficiency measurements give x‐ray intensities of a few TW/cm2. A detailed analysis of Kα emission points out the role of energetic electrons in the interaction physics. Based on a detailed comparison of experiments with hydrodynamic simulations, it is concluded that Kα emission is not longer than the laser pulse duration.Keywords
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