Journal article

Publication year: 1995

Pages: 3873-3882

Journal: Physical review A

Volume number: 51

Issue number: 5

ISSN: 1050-2947

eISSN: 1094-1622

DOI Link: https://doi.org/10.1103/PhysRevA.51.3873

Publisher: American Physical Society

Abstract: 

This paper presents a detailed description of KLL Auger spectra arising from collisions of hydrogenic N6+ ions on clean Si(100) and Al(110) surfaces at energies ranging from 78 eV up to 60 keV and at incident angles from 2.5° up to 45°. Atomic structure calculations of KLL Auger energies and decay rates for hollow atoms, together with simulations of the projectile trajectories, support a model in which the de-excitation of the ions proceeds essentially via two mechanisms. Before the ion enters the ‘‘close collision range,’’ a few of its L-shell vacancies are filled by Auger cascades involving outer shell electrons. But as seen as the projectile suffers close collisions, L-shell vacancies are rapidly filled by direct capture of target core electrons. The time scale of the latter mechanism is determined by the collision frequency.

Harvard Citation style: Limburg, J., Schippers, S., Hughes, I., Hoekstra, R. and Morgenstern, R. (1995) Velocity dependence of KLL Auger emission from hollow atoms formed during collisions of hydrogenic N6+ ions on surfaces, Physical review A, 51(5), pp. 3873-3882. https://doi.org/10.1103/PhysRevA.51.3873

APA Citation style: Limburg, J., Schippers, S., Hughes, I., Hoekstra, R., & Morgenstern, R. (1995). Velocity dependence of KLL Auger emission from hollow atoms formed during collisions of hydrogenic N6+ ions on surfaces. Physical review A. 51(5), 3873-3882. https://doi.org/10.1103/PhysRevA.51.3873