1 Extreme Light Infrastructure – Nuclear Physics (ELI-NP), Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Magurele, Romania
2 Doctoral School of Physics, University of Bucharest, Magurele, Romania
3 LULI-CNRS, CEA, Universite Sorbonne, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau CEDEX, France
4 Apel Laser, Ilfov, Romania
5 Aix-Marseille University, CNRS, LP3 UMR 7341, Marseille, France
6 Horia Hulubei National Institute for R&D in Physics and Nuclear Engineering (IFIN-HH), Magurele, Romania
7 University Politehnica of Bucharest, Bucharest, Romania
8 National Institute for Lasers Plasma and Radiation Physics, Magurele, Romania