Electronic excitations of slow ions in a free electron gas metal: evidence for charge exchange effects.

@article{Primetzhofer2011ElectronicEO,
  title={Electronic excitations of slow ions in a free electron gas metal: evidence for charge exchange effects.},
  author={Daniel Primetzhofer and Sabine Rund and Dietmar Roth and D. Goebl and Peter Bauer},
  journal={Physical review letters},
  year={2011},
  volume={107 16},
  pages={163201}
}
Electronic energy loss of light ions transmitted through nanometer films of Al has been studied at very low ion velocities. For hydrogen, the electronic stopping power S is found to be perfectly proportional to velocity, as expected for a free electron gas. For He, the same is anticipated, but S shows a transition between two distinct regimes, in both of which S is velocity proportional-however, with remarkably different slopes. This finding can be explained as a consequence of charge exchange… CONTINUE READING

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