We report on experiments designed to observe the correlation between the autoionization of
doubly excited helium atoms and the Auger decay of 2p vacancies in Al. The autoionizing …

Using a helium ion hitting various metal surfaces as a model system, we describe a general
quantum-kinetic approach for calculating ion-induced secondary electron emission spectra …

He atoms and ions with keV energies are scattered under grazing angles of incidence from
Al (111), Al (100), and Al (110) surfaces. Fractions of surviving ions and normal energy gains …

Inner-shell excitation during low-energy atomic collisions in the gas phase is driven by the
formation of transient molecules, in which some electronic levels are promoted to higher …

Motivated by experimental evidence for mixed-valence correlations affecting the
neutralization of strontium ions on gold surfaces, we set up an Anderson-Newns model for …

We report on experiments of secondary electron emission in the interaction of helium ions
with aluminum surfaces. Comparison between the electron emission induced by the impact …

Observation of Auger electron emission from Al under the impact of He ions, at energies
below the excitation threshold of Al-Al collisions, gives evidence for charge transfer in He-Al …

We report measurements of neutral atom fractions for Li+ scattered by a highly oriented
pyrolytic graphite surface as a function of the incident ion energy and exit angle. We found …

We report results of ion neutralization of low-energy positive He ions interacting with a
surface of highly oriented pyrolitic graphite as a function of the impinging energy. We found …

The very high neutral fractions measured in He+ scattered by graphitelike surfaces, at
intermediate incoming energies (1 keV< E in< 6 keV), cannot be explained only by the …