Ion-impact-induced interatomic Coulombic decay in neon and argon dimers

We investigate the contribution of interatomic Coulombic decay induced by ion impact in neon and argon dimers (Ne₂ and Ar₂) to the production of low-energy electrons. Our experiments cover a broad range of perturbation strengths and reaction channels. We use 11.37 MeV/u S¹⁴⁺, 0.125 MeV/u He¹⁺, 0.1625 MeV/u He¹⁺, and 0.150 MeV/u He²⁺ as projectiles and study ionization, single and double electron transfer to the projectile, as well as projectile electron loss processes. The application of a COLTRIMS reaction microscope enables us to retrieve the three-dimensional momentum vectors of the ion pairs of the fragmenting dimer into Neq+-Ne¹⁺ and Arq+-Ar¹⁺ ($q=$ 1, 2, 3) in coincidence with at least one emitted electron.