In this work, frequency doubled ultrashort laser pulses (λ=395nm, Ï=150fs, E=60mJ, I=10
17W/cm
2) are focused on solid aluminum targets to generate high density plasma by isochoric heating. The x-ray emission of the plasma is used to determine plasma parameters. Time integrated K-shell spectra show electron densities up to 7x10
23cm
-3 (solid state density) and constant electron temperatures of 450eV up to a depth of 4000Å. From comparison with simulation, non-local energy deposition due to fast electrons is found. Sub-ps time resolution is achieved by coupling a conical crystal spectrometer to an x-ray streak camera in accumulation mode. Measured x-ray pulse durations in the range of 1-2ps agree well with simulation results.
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In this work, frequency doubled ultrashort laser pulses (λ=395nm, Ï=150fs, E=60mJ, I=10
17W/cm
2) are focused on solid aluminum targets to generate high density plasma by isochoric heating. The x-ray emission of the plasma is used to determine plasma parameters. Time integrated K-shell spectra show electron densities up to 7x10
23cm
-3 (solid state density) and constant electron temperatures of 450eV up to a depth of 4000Å. From comparison with simulation, non-local energy deposition due to fast e...
»