Evidence for subsurface Auger processes during interactions of N7+ ions with a Ni(110) target

J. Das; L. Folkerts; R. Morgenstern

doi:10.1103/PhysRevA.45.4669

Evidence for subsurface Auger processes during interactions of N7+ ions with a Ni(110) target

J. Das^*, L. Folkerts, R. Morgenstern

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

51 Citations (Scopus)

Abstract

We present secondary-electron spectra arising from collisions of N7+ ions with a Ni(110) target for kinetic energies ranging between 150 eV and 20 keV and also for different observation angles. The filling of the two K-shell holes in N7+ requires two consecutive KLL Auger processes, giving rise to a double structure in the KLL peak. The ratio of the intensities of the two KLL peaks depends on the collision energy as well as on the angle of observation. We show that this dependence can be explained by assuming that the KLL electrons are emitted after the projectile has penetrated the surface.

Original language	English
Pages (from-to)	4669-4674
Number of pages	6
Journal	Physical Review A
Volume	45
Issue number	7
DOIs	https://doi.org/10.1103/PhysRevA.45.4669
Publication status	Published - 1-Apr-1992

Keywords

ELECTRON-EMISSION
SURFACE

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Evidence for subsurface Auger processes during interactions of N7
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abstract = "We present secondary-electron spectra arising from collisions of N7+ ions with a Ni(110) target for kinetic energies ranging between 150 eV and 20 keV and also for different observation angles. The filling of the two K-shell holes in N7+ requires two consecutive KLL Auger processes, giving rise to a double structure in the KLL peak. The ratio of the intensities of the two KLL peaks depends on the collision energy as well as on the angle of observation. We show that this dependence can be explained by assuming that the KLL electrons are emitted after the projectile has penetrated the surface.",

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AU - Das, J.

AU - Folkerts, L.

AU - Morgenstern, R.

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Y1 - 1992/4/1

N2 - We present secondary-electron spectra arising from collisions of N7+ ions with a Ni(110) target for kinetic energies ranging between 150 eV and 20 keV and also for different observation angles. The filling of the two K-shell holes in N7+ requires two consecutive KLL Auger processes, giving rise to a double structure in the KLL peak. The ratio of the intensities of the two KLL peaks depends on the collision energy as well as on the angle of observation. We show that this dependence can be explained by assuming that the KLL electrons are emitted after the projectile has penetrated the surface.

AB - We present secondary-electron spectra arising from collisions of N7+ ions with a Ni(110) target for kinetic energies ranging between 150 eV and 20 keV and also for different observation angles. The filling of the two K-shell holes in N7+ requires two consecutive KLL Auger processes, giving rise to a double structure in the KLL peak. The ratio of the intensities of the two KLL peaks depends on the collision energy as well as on the angle of observation. We show that this dependence can be explained by assuming that the KLL electrons are emitted after the projectile has penetrated the surface.

KW - ELECTRON-EMISSION

KW - SURFACE

U2 - 10.1103/PhysRevA.45.4669

DO - 10.1103/PhysRevA.45.4669

M3 - Article

SN - 1050-2947

VL - 45

SP - 4669

EP - 4674

JO - Physical Review A

JF - Physical Review A

IS - 7

ER -

Evidence for subsurface Auger processes during interactions of N7+ ions with a Ni(110) target

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