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Title: Neutralization of slow multicharged ions at a clean gold surface: Total electron yields

Abstract

Total slow-electron ([ital E][sub [ital e]][le]60 eV) yields as derived from measured electron-emission statistics are presented for impact of various slow ([ital v][sub [ital p]][le]10[sup 5] m/s) multicharged ions (N[sup 5+],N[sup 6+],Ne[sup 5+]--Ne[sup 10+], Ar[sup 5+]--Ar[sup 16+], Kr[sup 5+]--Kr[sup 10+], Xe[sup 6+],Xe[sup 8+],Xe[sup 10+], and I[sup 16+],I[sup 20+],I[sup 23+],I[sup 25+]) on atomically clean polycrystalline gold. The experimental data can successfully be modeled by classical over-barrier-type calculations, in which way three different electron-emission processes have been identified, i.e., autoionization of the transiently neutralized projectile ( hollow atom'') on its approach toward the surface, promotion into vacuum of electrons captured by the projectile, and peeling off'' of electrons remaining bound in highly excited states until projectile impact on the surface. The relative importance of these three processes depends strongly both on projectile species and impact velocity.

Authors:
; ; ; ;  [1]
  1. Institut fuer Allgemeine Physik, Technische Universitaet Wien, Wiedner Hauptstrae 8-10/134, A-1040 Wien (Austria)
Publication Date:
OSTI Identifier:
6242138
Resource Type:
Journal Article
Journal Name:
Physical Review A; (United States)
Additional Journal Information:
Journal Volume: 48:3; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GOLD; ION COLLISIONS; ELECTRON EMISSION; ARGON IONS; AUTOIONIZATION; BEAM NEUTRALIZATION; CATIONS; KRYPTON IONS; MULTICHARGED IONS; NEON IONS; NITROGEN IONS; POLYCRYSTALS; RARE GASES; SURFACE CLEANING; YIELDS; CHARGED PARTICLES; CLEANING; COLLISIONS; CRYSTALS; ELEMENTS; EMISSION; FLUIDS; GASES; IONIZATION; IONS; METALS; NONMETALS; SURFACE FINISHING; TRANSITION ELEMENTS; 665300* - Interactions Between Beams & Condensed Matter- (1992-)

Citation Formats

Kurz, H, Aumayr, F, Lemell, C, Toeglhofer, K, and Winter, H. Neutralization of slow multicharged ions at a clean gold surface: Total electron yields. United States: N. p., 1993. Web. doi:10.1103/PhysRevA.48.2182.
Kurz, H, Aumayr, F, Lemell, C, Toeglhofer, K, & Winter, H. Neutralization of slow multicharged ions at a clean gold surface: Total electron yields. United States. https://doi.org/10.1103/PhysRevA.48.2182
Kurz, H, Aumayr, F, Lemell, C, Toeglhofer, K, and Winter, H. Wed . "Neutralization of slow multicharged ions at a clean gold surface: Total electron yields". United States. https://doi.org/10.1103/PhysRevA.48.2182.
@article{osti_6242138,
title = {Neutralization of slow multicharged ions at a clean gold surface: Total electron yields},
author = {Kurz, H and Aumayr, F and Lemell, C and Toeglhofer, K and Winter, H},
abstractNote = {Total slow-electron ([ital E][sub [ital e]][le]60 eV) yields as derived from measured electron-emission statistics are presented for impact of various slow ([ital v][sub [ital p]][le]10[sup 5] m/s) multicharged ions (N[sup 5+],N[sup 6+],Ne[sup 5+]--Ne[sup 10+], Ar[sup 5+]--Ar[sup 16+], Kr[sup 5+]--Kr[sup 10+], Xe[sup 6+],Xe[sup 8+],Xe[sup 10+], and I[sup 16+],I[sup 20+],I[sup 23+],I[sup 25+]) on atomically clean polycrystalline gold. The experimental data can successfully be modeled by classical over-barrier-type calculations, in which way three different electron-emission processes have been identified, i.e., autoionization of the transiently neutralized projectile ( hollow atom'') on its approach toward the surface, promotion into vacuum of electrons captured by the projectile, and peeling off'' of electrons remaining bound in highly excited states until projectile impact on the surface. The relative importance of these three processes depends strongly both on projectile species and impact velocity.},
doi = {10.1103/PhysRevA.48.2182},
url = {https://www.osti.gov/biblio/6242138}, journal = {Physical Review A; (United States)},
issn = {1050-2947},
number = ,
volume = 48:3,
place = {United States},
year = {1993},
month = {9}
}