Abstract
We study the X-W emission (40 Å-200 Å) of plasmas produced by a high intensity subpicosecond laser. The experiments were performed using the INRS Table Top Terawatt 500 fs laser at both wavelengths of 1.05 μm and 0.5 μm and at intensities up to 5 × 1017 W/cm2. The spectra were recorded with two flat field UV spectrometers. We use both 101-07 Kodak and Shanghai 5 FW films. A comparison between the two films will be presented. The influence of various laser parameters on the ionization dynamics has been studied. In particular the laser pulse width was changed by controlling the compression gratings. Spectra obtained with pulse durations of 0. 5 ps, 1.3 ps, 5 ps and 1 ns will be presented and discussed.
© 1993 Optical Society of America
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