Aurelian Marcu (National Institute for Laser Plasma and Radiation Physics), Liga Avotina (Institute of Chemical Physics, University of Latvia, Kronvalda 4, LV 1010 Riga, Latvia), Corneliu Porosnicu (National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest, Romania), Alexandru Marin (“Ilie Murgulescu” Institute of Physical Chemistry, 202 Splaiul Independentei 060021, Bucharest, Romania), Cristiana Grigorescu (National Institute R&D for Optoelectronics INOE 2000, 077125 Bucharest, Romania), Razvan Ungureanu (National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest, Romania), Gabriel Cojocaru (National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest, Romania), Daniel Ursescu (National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest, Romania), Mihail Lungu (National Institute for Laser, Plasma and Radiation Physics, 077125 Bucharest, Romania), Nicola Demitri (Hard X-ray Beamline and Structural Biology, Elettra-Sincrotrone Trieste, Strada Statale 14 - km 163,5 in AREA Science Park, 34149 Basovizza TS Italy), Cristian Lungu (National Institute for Laser Plasma and Radiation Physics)