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Title: Secondary electron yields from low energy, highly charged ions impacting on metal surfaces

Abstract

Ions impacting on a metal surface cause electrons to be emitted with their yield (number of emitted electrons per incoming ion) depending on the surface, impact angle, ion species, charge state, and energy. Previous investigations for low charge states and low impact velocities has shown that the number of secondary electrons are proportional to the ion`s potential energy (sum of ionization energies), but does not vary much with the impact velocities. Our results from 4-fold through 18-fold ionized Argon ions impacting on a 304 stainless steel Faraday cup show that the highest charge states emit substantially less than the number of electrons predicted by the ions potential energy. In, addition, we found an increase of approximately 8 electrons when the ion energy was raised from 1 keV/amu to 10 keV/amu.

Authors:
;  [1]
  1. Kansas State Univ., Manhattan, KS (United States)
Publication Date:
OSTI Identifier:
281585
Report Number(s):
CONF-9305421-
Journal ID: BAPSA6; ISSN 0003-0503; TRN: 96:019514
Resource Type:
Journal Article
Journal Name:
Bulletin of the American Physical Society
Additional Journal Information:
Journal Volume: 38; Journal Issue: 3; Conference: 1993 American Physical Society annual meeting on atomic, molecular, and topical physics, Reno, NV (United States), 16-19 May 1993; Other Information: PBD: May 1993
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; STAINLESS STEEL-304; ION COLLISIONS; ELECTRON EMISSION; ARGON IONS; IONIZATION; SURFACES; MULTICHARGED IONS

Citation Formats

Stoeckli, M P, and Winecki, S. Secondary electron yields from low energy, highly charged ions impacting on metal surfaces. United States: N. p., 1993. Web.
Stoeckli, M P, & Winecki, S. Secondary electron yields from low energy, highly charged ions impacting on metal surfaces. United States.
Stoeckli, M P, and Winecki, S. Sat . "Secondary electron yields from low energy, highly charged ions impacting on metal surfaces". United States.
@article{osti_281585,
title = {Secondary electron yields from low energy, highly charged ions impacting on metal surfaces},
author = {Stoeckli, M P and Winecki, S},
abstractNote = {Ions impacting on a metal surface cause electrons to be emitted with their yield (number of emitted electrons per incoming ion) depending on the surface, impact angle, ion species, charge state, and energy. Previous investigations for low charge states and low impact velocities has shown that the number of secondary electrons are proportional to the ion`s potential energy (sum of ionization energies), but does not vary much with the impact velocities. Our results from 4-fold through 18-fold ionized Argon ions impacting on a 304 stainless steel Faraday cup show that the highest charge states emit substantially less than the number of electrons predicted by the ions potential energy. In, addition, we found an increase of approximately 8 electrons when the ion energy was raised from 1 keV/amu to 10 keV/amu.},
doi = {},
journal = {Bulletin of the American Physical Society},
number = 3,
volume = 38,
place = {United States},
year = {1993},
month = {5}
}