Measurement of autoionization rates for electron emission above a metal surface

J Das; R Morgenstern

doi:10.1103/PhysRevA.47.R755

Measurement of autoionization rates for electron emission above a metal surface

J Das^*, R Morgenstern

^*Corresponding author for this work

Research output: Contribution to journal › Comment/Letter to the editor › Academic › peer-review

57 Citations (Scopus)

Abstract

We present K Auger spectra arising from collisions of N6+ ions with a Ni(110) target for different kinetic energies and observation angles. The bulk of the electrons is ascribed to emission below the surface. At very low collision velocities (v(perpendicular-to) less-than-or-equal-to 10(-2) a.u.) we find a pronounced contribution from electrons emitted prior to impact. The velocity dependence of the above-surface component is used for the experimental determination of the time scales involved in electron emission above the surface. Comparison with theoretical estimates is also presented.

Original language	English
Pages (from-to)	R755-R758
Number of pages	4
Journal	Physical Review A
Volume	47
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevA.47.R755
Publication status	Published - Feb-1993

Keywords

HIGHLY CHARGED IONS
ABOVE-SURFACE
AR IONS
NEUTRALIZATION

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title = "Measurement of autoionization rates for electron emission above a metal surface",

abstract = "We present K Auger spectra arising from collisions of N6+ ions with a Ni(110) target for different kinetic energies and observation angles. The bulk of the electrons is ascribed to emission below the surface. At very low collision velocities (v(perpendicular-to) less-than-or-equal-to 10(-2) a.u.) we find a pronounced contribution from electrons emitted prior to impact. The velocity dependence of the above-surface component is used for the experimental determination of the time scales involved in electron emission above the surface. Comparison with theoretical estimates is also presented.",

keywords = "HIGHLY CHARGED IONS, ABOVE-SURFACE, AR IONS, NEUTRALIZATION",

author = "J Das and R Morgenstern",

year = "1993",

month = feb,

doi = "10.1103/PhysRevA.47.R755",

language = "English",

volume = "47",

pages = "R755--R758",

journal = "Physical Review A",

issn = "1050-2947",

publisher = "AMER PHYSICAL SOC",

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T1 - Measurement of autoionization rates for electron emission above a metal surface

AU - Das, J

AU - Morgenstern, R

PY - 1993/2

Y1 - 1993/2

N2 - We present K Auger spectra arising from collisions of N6+ ions with a Ni(110) target for different kinetic energies and observation angles. The bulk of the electrons is ascribed to emission below the surface. At very low collision velocities (v(perpendicular-to) less-than-or-equal-to 10(-2) a.u.) we find a pronounced contribution from electrons emitted prior to impact. The velocity dependence of the above-surface component is used for the experimental determination of the time scales involved in electron emission above the surface. Comparison with theoretical estimates is also presented.

AB - We present K Auger spectra arising from collisions of N6+ ions with a Ni(110) target for different kinetic energies and observation angles. The bulk of the electrons is ascribed to emission below the surface. At very low collision velocities (v(perpendicular-to) less-than-or-equal-to 10(-2) a.u.) we find a pronounced contribution from electrons emitted prior to impact. The velocity dependence of the above-surface component is used for the experimental determination of the time scales involved in electron emission above the surface. Comparison with theoretical estimates is also presented.

KW - HIGHLY CHARGED IONS

KW - ABOVE-SURFACE

KW - AR IONS

KW - NEUTRALIZATION

U2 - 10.1103/PhysRevA.47.R755

DO - 10.1103/PhysRevA.47.R755

M3 - Comment/Letter to the editor

SN - 1050-2947

VL - 47

SP - R755-R758

JO - Physical Review A

JF - Physical Review A

IS - 2

ER -

Measurement of autoionization rates for electron emission above a metal surface

Abstract

Keywords

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