Abstract
The theoretical description of inner-shell excitation in ion-atom collisions has focused on two regions: “Coulomb ionization” by structureless ions, and “molecular excitation” via a quasimolecule formed during the collision. The mechanisms involved can be investigated in detail by studying correlation effects. For this purpose techniques such as detection of coincidences between scattered ions and the emitted reaction product, or observation of anisotropies of line radiation can be used. By measuring the impact parameter dependence in molecular K-shell ionization, the basic role of the 2pσ-2pπ rotational coupling was established to be in agreement with theory. At higher collision velocities characteristic deviations between the experimental results and the theoretical predictions were found. In the Coulomb regime the polarization of proton-induced line radiation was studied using Xe and Au targets. The observed effect was smaller than predicted by PWBA calculations.
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Lutz, H.O., Luz, N., Sackmann, S., Jitschin, W., Hippler, R. (1980). Coincidence Studies of Inner-Shell Excitation in Ion-Atom Collisions. In: Kleinpoppen, H., Williams, J.F. (eds) Coherence and Correlation in Atomic Collisions. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2997-8_26
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DOI: https://doi.org/10.1007/978-1-4613-2997-8_26
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