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X-ray spectroscopic observations of a superdense plasma in nanoparticles irradiated by superintense femtosecond laser radiation |
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| Authors: | A. Ya. Faenov T. A. Pikuz I. Yu. Skobelev A. I. Magunov V. P. Efremov M. Servol F. Quéré M. Bougeard P. Monot Ph. Martin M. Francucci G. Petrocelli P. Audebert |
| Affiliation: | (1) Multicharged Ion Spectra Data Center, NPO VNIIFTRI, Mendeleevo, Moscow region, 141570, Russia;(2) Institute of High Temperatures Scientific Association (IVTAN), Russian Academy of Sciences, Izhorskaya ul. 13/19, Moscow, 127412, Russia;(3) DSM-DRECAM-Service des Photons, Atomes et Molécules, CEA Saclay, 91191 Gif-sur-Yvette Cedex, France;(4) Dipartimento di Scienze e Technologie Fisiche ed Energetiche, Universita di Roma “Tor Vergata,”, 00133 Rome, Italy;(5) LULI (CNRS), Ecole polytechnique, 91 128 Palaiseau Cedex, France |
| Abstract: | The interaction of femtosecond laser pulses with SiO2 aerogel targets has been analyzed by x-ray spectroscopic methods. The use of an aerogel target with transparent grains makes it possible to considerably reduce the requirements on laser-pulse contrasts for which heating occurs without the formation of a preplasma. A nanoplasma with a density sevenfold higher than the solid-state density has been detected. |
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