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Title: Coincidence electron spectroscopy of electron-impact multiple ionization of argon

Abstract

Measurements of the partial double differential ionization cross sections of argon atoms have been made by performing coincidences between recoil ions and energy- and angle-selected slow electrons produced in 12-24 keV e{sup -}-Ar collisions. Results show that the Ar{sup 3+} ions are formed mainly by a two-step-one process via electron shake-off. These measurements have enabled determination of the shake-off probability S=0.14{+-}0.01 for L{sub 2,3} subshell, which is in good agreement with a theoretical predication. Additionally, Ar{sup 2+} and Ar{sup +} ions are found to arise respectively from the filling of L-shell vacancy by an auger transition and from the direct ionization of M-shell of the argon atom.

Authors:
;  [1]
  1. Atomic Physics Laboratory, Department of Physics, Banaras Hindu University, Varanasi-221 005 (India)
Publication Date:
OSTI Identifier:
20786320
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.72.062721; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ARGON; ARGON IONS; ATOMS; AUGER EFFECT; CROSS SECTIONS; ELECTRON SPECTRA; ELECTRON SPECTROSCOPY; ELECTRON-ATOM COLLISIONS; ELECTRONS; INNER-SHELL IONIZATION; KEV RANGE; L SHELL; M SHELL; PROBABILITY; RECOILS; VACANCIES

Citation Formats

Mondal, S., and Shanker, R. Coincidence electron spectroscopy of electron-impact multiple ionization of argon. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Mondal, S., & Shanker, R. Coincidence electron spectroscopy of electron-impact multiple ionization of argon. United States. doi:10.1103/PHYSREVA.72.0.
Mondal, S., and Shanker, R. Thu . "Coincidence electron spectroscopy of electron-impact multiple ionization of argon". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786320,
title = {Coincidence electron spectroscopy of electron-impact multiple ionization of argon},
author = {Mondal, S. and Shanker, R.},
abstractNote = {Measurements of the partial double differential ionization cross sections of argon atoms have been made by performing coincidences between recoil ions and energy- and angle-selected slow electrons produced in 12-24 keV e{sup -}-Ar collisions. Results show that the Ar{sup 3+} ions are formed mainly by a two-step-one process via electron shake-off. These measurements have enabled determination of the shake-off probability S=0.14{+-}0.01 for L{sub 2,3} subshell, which is in good agreement with a theoretical predication. Additionally, Ar{sup 2+} and Ar{sup +} ions are found to arise respectively from the filling of L-shell vacancy by an auger transition and from the direct ionization of M-shell of the argon atom.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}