X-ray spectroscopic diagnostics of ultrashort laser-cluster interaction at the stage of the nonadiabatic scattering of clusters

Faenov, A. Y.; Magunov, A. I.*; Pikuz, T. A.*; Skobelev, I. Y.*; Giulietti, D.*; Betti, S.*; Galimberti, M.*; Gamucci, A.*; Giulietti, A.*; Gizzi, L. A.*; Labate, L.*; Levato, T.*; Tomassini, P.*; Marques, J. R.*; Bourgeois, N.*; Dobosz-Dufrnoy, S.*; Ceccotti, T.*; Monot, P.*; Reau, F.*; Popescu, H.*; D'Oliveira, P.*; Martin, P.*; Fukuda, Yuji; Boldarev, A. S.*; Gasilov, S. V.*; Gasilov, V. A.*

X-ray spectroscopy diagnostics of laser-cluster interactions at a stage of non-adiabatical cluster expansion and formation of the spatially homogeneous plasma channel is carried out for the first time. It is shown, that X-ray line emission spectra of light elements, allows to determine parameters of the plasma formed at the time moment 10 ps from the beginning of femtosecond laser with relatively high plasma temperature Te 100 eV iand electron density Ne about 10 - 10 cm.