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Title: Electron emission and image-charge acceleration for the impact of very highly charged ions on clean gold

Abstract

We present total yields for emission of slow ([ital E][sub [ital e]][le]50 eV) electrons due to the impact of slow ([ital v][sub [ital p]][le]5[times]10[sup 5] m/s) highly charged ions [Ar[sup [ital q]+] ([ital q][le]18), Xe[sup [ital q]+] ([ital q][le]51), and Th[sup [ital q]+] ([ital q][le]80)] on clean polycrystalline gold. The highly charged ions were produced in the Lawrence Livermore National Laboratory electron-beam ion trap; electron yields have been derived from the respective measured electron emission statistics. The experimental data support a currently accepted scenario for multicharged ion-induced electron emission, which is largely based on a classical over-barrier model. In particular, we are able to distinguish different processes contributing to the total above-surface electron emission. In addition, an ultimate low-impact-energy limit due to projectile self-acceleration toward the metal surface, as a result of the projectile image charge, has been demonstrated and evaluated.

Authors:
; ;  [1]; ; ;  [2]
  1. Institut fuer Allgemeine Physik, Technische Universitaet Wien, 1040 Wien (Austria)
  2. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
Publication Date:
OSTI Identifier:
7116524
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Physical Review A; (United States)
Additional Journal Information:
Journal Volume: 49:6; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ELECTRON EMISSION; YIELDS; GOLD; ION COLLISIONS; ARGON IONS; CHARGE STATES; CORRELATIONS; EV RANGE; MULTICHARGED IONS; POLYCRYSTALS; SURFACE CLEANING; THORIUM IONS; XENON IONS; CHARGED PARTICLES; CLEANING; COLLISIONS; CRYSTALS; ELEMENTS; EMISSION; ENERGY RANGE; IONS; METALS; SURFACE FINISHING; TRANSITION ELEMENTS; 665300* - Interactions Between Beams & Condensed Matter- (1992-)

Citation Formats

Kurz, H, Aumayr, F, Winter, H, Schneider, D, Briere, M A, and McDonald, J W. Electron emission and image-charge acceleration for the impact of very highly charged ions on clean gold. United States: N. p., 1994. Web. doi:10.1103/PhysRevA.49.4693.
Kurz, H, Aumayr, F, Winter, H, Schneider, D, Briere, M A, & McDonald, J W. Electron emission and image-charge acceleration for the impact of very highly charged ions on clean gold. United States. doi:10.1103/PhysRevA.49.4693.
Kurz, H, Aumayr, F, Winter, H, Schneider, D, Briere, M A, and McDonald, J W. Wed . "Electron emission and image-charge acceleration for the impact of very highly charged ions on clean gold". United States. doi:10.1103/PhysRevA.49.4693.
@article{osti_7116524,
title = {Electron emission and image-charge acceleration for the impact of very highly charged ions on clean gold},
author = {Kurz, H and Aumayr, F and Winter, H and Schneider, D and Briere, M A and McDonald, J W},
abstractNote = {We present total yields for emission of slow ([ital E][sub [ital e]][le]50 eV) electrons due to the impact of slow ([ital v][sub [ital p]][le]5[times]10[sup 5] m/s) highly charged ions [Ar[sup [ital q]+] ([ital q][le]18), Xe[sup [ital q]+] ([ital q][le]51), and Th[sup [ital q]+] ([ital q][le]80)] on clean polycrystalline gold. The highly charged ions were produced in the Lawrence Livermore National Laboratory electron-beam ion trap; electron yields have been derived from the respective measured electron emission statistics. The experimental data support a currently accepted scenario for multicharged ion-induced electron emission, which is largely based on a classical over-barrier model. In particular, we are able to distinguish different processes contributing to the total above-surface electron emission. In addition, an ultimate low-impact-energy limit due to projectile self-acceleration toward the metal surface, as a result of the projectile image charge, has been demonstrated and evaluated.},
doi = {10.1103/PhysRevA.49.4693},
journal = {Physical Review A; (United States)},
issn = {1050-2947},
number = ,
volume = 49:6,
place = {United States},
year = {1994},
month = {6}
}