Theoretical study on the dynamical correlation in Ar focusing on 3s excitation with outer-shell ionization due to electron impacts

Tsutomu Watanabe, Andrew Domondon, Xiao Min Tong

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Abstract

We investigate the energy-loss spectra of high-energy electrons incident on Ar atoms using linear density response theory with a self-interaction correction. The energy region of the spectra covers from 24.5 to 30.0 eV, where many ns, np, and nd autoionizing resonant states from the 3s orbital of Ar exist with the continuum background from the 3p orbital. We compare the calculated spectra to recent energy-loss spectra measurements and identify the observed autoionizing resonant states. We also discuss the dependence of the spectra on the scattering angles and their physical meanings.

Original languageEnglish
Article number042709
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume80
Issue number4
DOIs
Publication statusPublished - 2009 Oct 16
Externally publishedYes

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electron impact
ionization
excitation
energy dissipation
orbitals
high energy electrons
continuums
scattering
atoms
interactions
energy

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

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AB - We investigate the energy-loss spectra of high-energy electrons incident on Ar atoms using linear density response theory with a self-interaction correction. The energy region of the spectra covers from 24.5 to 30.0 eV, where many ns, np, and nd autoionizing resonant states from the 3s orbital of Ar exist with the continuum background from the 3p orbital. We compare the calculated spectra to recent energy-loss spectra measurements and identify the observed autoionizing resonant states. We also discuss the dependence of the spectra on the scattering angles and their physical meanings.

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