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Warm dense aluminum plasma generated by the free-electron-laser FLASH

Journal Article · · AIP Conference Proceedings
DOI:https://doi.org/10.1063/1.4707856· OSTI ID:22004073
We report on experiments aimed at the generation and characterization of solid density plasmas at the free-electron laser FLASH in Hamburg. Aluminum samples were irradiated with XUV pulses at 13.5 nm wavelength (92 eV photon energy). The pulses with duration of a few tens of femtoseconds and pulse energy up to 100 {mu}J are focused to intensities ranging from 10{sup 13} to 10{sup 17} W/cm{sup 2}. We investigate the absorption and temporal evolution of the sample under irradiation by use of XUV spectroscopy. We discuss the origin of saturable absorption, radiative decay, bremsstrahlung and ionic line emission. Our experimental results are in good agreement with hydrodynamic simulations.
OSTI ID:
22004073
Journal Information:
AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1438; ISSN APCPCS; ISSN 0094-243X
Country of Publication:
United States
Language:
English