Geethanjali Gopakumar, Eva Muchová, Isaak Unger, Sebastian Malerz, Florian Trinter, Gunnar Öhrwall, Filippo Lipparini, Benedetta Mennucci, Denis Céolin, Carl Caleman, Iain Wilkinson, Bernd Winter, Petr Slavíček, Uwe Hergenhahn, Olle Björneholm
Non-local analogues of Auger decay are increasingly recognized as important relaxation processes in the condensed phase. Here, we explore non-local autoionization, specifically Intermolecular Coulombic Decay (ICD), of a series of aqueous-phase isoelectronic cations following 1s core-level ionization. In particular, we focus on Na+ , Mg2+ , and Al3+ ions. We unambiguously identify the ICD contribution to the K-edge Auger spectrum. The different strength of the ion-water interactions is manifested by varying intensities of the respective signals: the ICD signal intensity is greatest for the Al3+ case, weaker for Mg2+ , and absent for weakly-solvent-bound Na+ ...
April 13, 2022: Physical Chemistry Chemical Physics: PCCP