Target effects in the interaction of highly charged Ne ions with an Al(110) surface

We studied the potential electron emission arising from the interaction of H-like Ne[sup 9+] ions with clean Al(110) and Pt(110) surfaces at different glancing angles (10 [degree]--90[degree]) with 90-keV impact energy. Projectile [ital KLL] Auger electrons are found to be emitted from inside the so...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1994-12, Vol.50 (6), p.4993-4999
Main Authors: Hustedt, S, Freese, J, Mähl, S, Heiland, W, Schippers, S, Bleck-Neuhaus, J, Grether, M, Köhrbrück, R, Stolterfoht, N
Format: Article
Language:English
Subjects:
665300 - Interactions Between Beams & Condensed Matter- (1992-)
ALUMINIUM
ATOMS
AUGER EFFECT
CHARGED PARTICLES
COLLISIONS
CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRYSTAL FACES
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
ENERGY RANGE
HYDROGEN
INCIDENCE ANGLE
ION COLLISIONS
IONS
ISOELECTRONIC ATOMS
KEV RANGE
KEV RANGE 10-100
L SHELL
METALS
NEON IONS
NONMETALS
PROJECTILES
SECONDARY EMISSION
TARGETS
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Summary:We studied the potential electron emission arising from the interaction of H-like Ne[sup 9+] ions with clean Al(110) and Pt(110) surfaces at different glancing angles (10 [degree]--90[degree]) with 90-keV impact energy. Projectile [ital KLL] Auger electrons are found to be emitted from inside the solid. Therefore, the measured electron energy distributions are influenced by solid-state effects. We present a deconvolution procedure to determine the scattering contribution to the measured spectra for Al targets. After a subtraction of the scattering contribution we compare the resulting primary emission spectra with atomic structure calculations. The calculations show that at the moment of [ital KLL] Auger electron emission the projectile [ital L] shell is completely filled for an Al target, whereas for a Pt target there were on the average only five electrons in the projectile [ital L] shell. This indicates a relatively faster [ital L]-shell filling process for Al targets.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.50.4993