Ultrafast mapping of relaxation dynamics of ethylene cation Matteo Lucchini, Mario Murari, Giacinto D. Lucarelli, Fabio Frassetto, Luca Poletto and Mauro Nisoli EPJ Web Conf., 205 (2019) 06002 Published online: 16 April 2019 DOI: 10.1051/epjconf/201920506002