PROBING HOLLOW ATOM STATES FORMED DURING IMPACT OF HIGHLY-CHARGED IONS ON SURFACES - N-6,N-7+ AND O7+ ON AL(110) AND SI(100)

Autor(en): LIMBURG, J
SCHIPPERS, S
HUGHES, I
HOEKSTRA, R
MORGENSTERN, R
HUSTEDT, S
HATKE, N
HEILAND, W
Stichwörter: ELECTRON-EMISSION; Instruments & Instrumentation; Nuclear Science & Technology; Physics; Physics, Atomic, Molecular & Chemical; Physics, Nuclear; PT(110); SLOW; TARGET
Erscheinungsdatum: 1995
Herausgeber: ELSEVIER SCIENCE BV
Journal: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
Volumen: 98
Ausgabe: 1-4
Startseite: 436
Seitenende: 440
Zusammenfassung: 
This paper presents spectra obtained from the interaction of slow N7+ and O7+ ions interacting with a Si(100) crystal and from N6+ ions interacting with an Al(110) surface at grazing incidence. The spectra show profound structures which, by means of Hartree-Fock atomic structure calculations, allow us to identify the hollow atom states present at the moment of KLL decay. The velocity dependence of the spectra can be explained by a model in which the projectiles L-shell is filled by direct capture of a single target core electron during consecutive binary collisions between projectile and target atoms. The cross section for this capture process is large and, by its localized nature, yields a velocity dependent L-shell filling rate.
Beschreibung: 
7th International Conference on the Physics of Highly Charged Ions (HCI-94), VIENNA, AUSTRIA, SEP 19-23, 1994
ISSN: 0168583X
DOI: 10.1016/0168-583X(95)00162-X

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