  We provide the experimental evidence that the single electron capture process
in slow collisions between O$^{3+}$ ions and neon dimer targets leads to an
unexpected production of low-energy electrons. This production results from the
interatomic Coulombic decay process, subsequent to inner shell single electron
capture from one site of the neon dimer. Although pure one-electron capture
from inner shell is expected to be negligible in the low collision energy
regime investigated here, the electron production due to this process overtakes
by one order of magnitude the emission of Auger electrons by the scattered
projectiles after double-electron capture. This feature is specific to low
charge states of the projectile: similar studies with Xe$^{20+}$ and Ar$^{9+}$
projectiles show no evidence of inner shell single-electron capture. The
dependence of the process on the projectile charge state is interpreted using
simple calculations based on the classical over the barrier model.
