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Title: Emission of electrons from a clean gold surface induced by slow, very highly charged ions at the image charge acceleration limit

Abstract

Total low-energy electron yields for the normal incidence interaction of slow, very highly charged ions ([sup 136]Xe[sup [ital q]+], 21[le][ital q][le]51; [sup 232]Th[sup [ital q]+], 51[le][ital q][le]80) with a clean gold surface have been determined from the related measured electron emission statistics. The projectile impact energies could be reduced down to the image charge acceleration limit. The electron emission yield was found to increase proportionally with the increasing projectile charge state in all cases studied, suggesting no saturation in the ability of the Au target to provide necessary electrons within the above surface interaction time (e.g., about 280 electrons/projectile for Th[sup 79+] in less than 10[sup [minus]13] s). Because of the relatively narrow energy distribution of the incident ions, as well as their very high charge states, the first clear measurements of the image charge acceleration from electron emission yields could be performed. Results of a quantitative study of this acceleration are in good agreement with those of a theoretical model based on classical over the barrier transitions (recently developed by J. Burgdoerfer [ital et] [ital al].).

Authors:
; ; ; ; ; ;  [1]
  1. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States) Institut fuer Allgemeine Physik, TU Wien A-1040 (Austria)
Publication Date:
OSTI Identifier:
6388869
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 71:12; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; GOLD; ION SCATTERING ANALYSIS; SECONDARY EMISSION; ELECTRON SPECTRA; MULTICHARGED IONS; SURFACE FORCES; SURFACE POTENTIAL; XENON IONS; CHARGED PARTICLES; CHEMICAL ANALYSIS; ELEMENTS; EMISSION; IONS; METALS; NONDESTRUCTIVE ANALYSIS; POTENTIALS; SPECTRA; TRANSITION ELEMENTS; 665300* - Interactions Between Beams & Condensed Matter- (1992-)

Citation Formats

Aumayr, F, Kurz, H, Schneider, D, Briere, M A, McDonald, J W, Cunningham, C E, and Winter, H. Emission of electrons from a clean gold surface induced by slow, very highly charged ions at the image charge acceleration limit. United States: N. p., 1993. Web. doi:10.1103/PhysRevLett.71.1943.
Aumayr, F, Kurz, H, Schneider, D, Briere, M A, McDonald, J W, Cunningham, C E, & Winter, H. Emission of electrons from a clean gold surface induced by slow, very highly charged ions at the image charge acceleration limit. United States. https://doi.org/10.1103/PhysRevLett.71.1943
Aumayr, F, Kurz, H, Schneider, D, Briere, M A, McDonald, J W, Cunningham, C E, and Winter, H. Mon . "Emission of electrons from a clean gold surface induced by slow, very highly charged ions at the image charge acceleration limit". United States. https://doi.org/10.1103/PhysRevLett.71.1943.
@article{osti_6388869,
title = {Emission of electrons from a clean gold surface induced by slow, very highly charged ions at the image charge acceleration limit},
author = {Aumayr, F and Kurz, H and Schneider, D and Briere, M A and McDonald, J W and Cunningham, C E and Winter, H},
abstractNote = {Total low-energy electron yields for the normal incidence interaction of slow, very highly charged ions ([sup 136]Xe[sup [ital q]+], 21[le][ital q][le]51; [sup 232]Th[sup [ital q]+], 51[le][ital q][le]80) with a clean gold surface have been determined from the related measured electron emission statistics. The projectile impact energies could be reduced down to the image charge acceleration limit. The electron emission yield was found to increase proportionally with the increasing projectile charge state in all cases studied, suggesting no saturation in the ability of the Au target to provide necessary electrons within the above surface interaction time (e.g., about 280 electrons/projectile for Th[sup 79+] in less than 10[sup [minus]13] s). Because of the relatively narrow energy distribution of the incident ions, as well as their very high charge states, the first clear measurements of the image charge acceleration from electron emission yields could be performed. Results of a quantitative study of this acceleration are in good agreement with those of a theoretical model based on classical over the barrier transitions (recently developed by J. Burgdoerfer [ital et] [ital al].).},
doi = {10.1103/PhysRevLett.71.1943},
url = {https://www.osti.gov/biblio/6388869}, journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 71:12,
place = {United States},
year = {1993},
month = {9}
}