Low-energy electron-impact ionization of helium

E. Schow; K. Hazlett; J. Childers; C. Medina; G. Vitug; I. Bray; D.V. Fursa; M. Khakoo

doi:10.1103/PhysRevA.72.062717

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Low-energy electron-impact ionization of helium

Journal article

Open access

Peer reviewed

Low-energy electron-impact ionization of helium

E. Schow, K. Hazlett, J. Childers, C. Medina, G. Vitug, I. Bray, D.V. Fursa and M. Khakoo

Physical Review A - Atomic, Molecular, and Optical Physics, Vol.72(6)

2005

DOI: https://doi.org/10.1103/PhysRevA.72.062717

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Abstract

Normalized doubly differential cross sections for the electron-impact ionization of helium at low energies are presented. The data are taken at the incident electron energies of 26.3, 28.3, 30.3, 32.5, 34.3, 36.5, and 40.7 eV and for scattering angles of 10°–130°. The measurements involve the use of the moveable target method developed at California State University Fullerton to accurately determine the continuum background in the energy-loss spectra. Normalization of experimental data is made on a relative scale to well-established experimental differential cross sections for excitation of the n=2 manifold of helium and then on an absolute scale to the well-established total ionization cross sections of Shah et al. J. Phys. B 21 2751 (1988)]. Comparisons are made with available experimental data and the results of the convergent close-coupling theory.

Details

Title: Low-energy electron-impact ionization of helium
Authors/Creators: E. Schow (Author/Creator)
K. Hazlett (Author/Creator)
J. Childers (Author/Creator)
C. Medina (Author/Creator)
G. Vitug (Author/Creator)
I. Bray (Author/Creator)
D.V. Fursa (Author/Creator)
M. Khakoo (Author/Creator)
Publication Details: Physical Review A - Atomic, Molecular, and Optical Physics, Vol.72(6)
Publisher: The American Physical Society
Identifiers: 991005545096207891
Murdoch Affiliation: Centre for Atomic, Molecular and Surface Physics; School of Mathematical and Physical Sciences
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Citation topics: 2 Chemistry; 2.15 Physical Chemistry; 2.15.664 Dissociative Electron Attachment
Web Of Science research areas: Optics; Physics, Atomic, Molecular & Chemical
ESI research areas: Physics