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)

Authors
LIMBURG J SCHIPPERS S HUGHES I HOEKSTRA R MORGENSTERN R HUSTEDT S HATKE N HEILAND W
Citation
J. Limburg et al., 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), Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 98(1-4), 1995, pp. 436-440
Citations number
16
Categorie Soggetti
Physics, Nuclear","Nuclear Sciences & Tecnology","Instument & Instrumentation
Journal title
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms → ACNP
ISSN journal
0168583X
Volume
98
Issue
1-4
Year of publication
1995
Pages
436 - 440
Database
ISI
SICI code
0168-583X(1995)98:1-4<436:PHASFD>2.0.ZU;2-5
Abstract
This paper presents spectra obtained from the interaction of slow N7and O7+ ions interacting with a Si(100) crystal and from N6+ ions inte racting 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 t he 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 dir ect 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.