Interaction of slow multicharged ions with solid surfaces

A. Arnau1, F. Aumayr2, P.M. Echenique1, M. Grether3, W. Heiland4, J. Limburg5, R. Morgenstern5, P. Roncin6, S. Schippers5, R. Schuch7, N. Stolterfoht3, P. Varga2, T.J.M. Zouros8 and HP. Winter2

1Departamento de Física de Materiales, Universidad del País Vasco, Apartado 1072, San Sebastian 20080, Spain
2Institut für Allgemeine Physik, Technische Universität Wien, A-1040 Wien, Austria
3Hahn-Meitner-Institut Berlin, D-14109 Berlin Germany
4FB Physik, Universität Osnabrück, D-49069 Osnabrück, Germany
5Kernfysisch Versneller Instituut, NL-9747 AA Groningen, Netherlands
6Lab. des Collisions Atomiques et Moléculaires, Université Paris Sud, F-91405 Orsay, France
7Atomic Physics Department, Stockholm University, S-10405 Stockholm, Sweden
8Institute of Electronic Structure and Laser, 711 10 Heraklion(Crete), Greece

Surf. Sci. Rep. 27 (1997) 113-239

The present report deals with the main aspects of the interaction of slow (impact velocity typically below 1 a.u.) multicharged ions (MCI) with atomically clean solid surfaces of metals, semiconductors and insulators. It is based to a large extent on the results obtained by the authors and their affiliates within the Human Capital and Mobility Network of the European Union on "Interaction of Slow Highly Charged Ions with Solid Surfaces", which has been carried out during the last three years.
After briefly reviewing the pertinent historical developments, the experimental and theoretical techniques applied nowadays in the field of MCI-surface interaction studies are explained in detail, discussing especially the transient formation and relaxation of "hollow atoms" formed in such collisions. Further on, the status of the field is exemplified by numerous results from recent studies on MCI-induced emission of slow and fast electrons (yields and energy distributions), projectile soft X-ray spectroscopy, charge-changing and energy loss of scattered and surface-channelled projectiles, MCI-induced sputtering and secondary ion emission, and coincidence measurements involving different signatures from the above processes. The presented theoretical and experimental work has greatly contributed to an improved understanding of the strongly inter-related electronic transitions taking place for MCI above, at and below a solid surface.

Corresponding author: HP. Winter. Reprints available from F. Aumayr (aumayr< encoded email address >).

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