Strong projectile-energy dependence of the Auger-line intensity at 0° due to Coulomb focusing in fast proton-neon collisions

Gy Víkor, S. Ricz, B. Sulik, L. Tóth, A. Kövér, J. Végh

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9 Citations (Scopus)

Abstract

The variation of the intensity of the Ne K-L2,3L2,3(1D2) Auger line due to post-collision interaction has been measured as a function of the projectile energy at 0° (±1.4°) observation angle in 0.8-3.2 MeV H+-Ne collisions. The measured Auger-electron yield normalized to the theoretical or experimental total K-shell ionization cross section shows a strong enhancement when the projectile velocity is smaller than the Auger-electron velocity. The general agreement between the present experimental data and continuum distorted wave calculations provides a clear evidence that the observed impact-energy dependence is mostly due to the post-collision Coulomb focusing exerted by the projectile on the Auger electron.

Original languageEnglish
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume29
Issue number22
DOIs
Publication statusPublished - Nov 28 1996

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neon
projectiles
collisions
protons
Coulomb collisions
electrons
ionization cross sections
energy
continuums
augmentation
interactions

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy(all)

Cite this

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title = "Strong projectile-energy dependence of the Auger-line intensity at 0° due to Coulomb focusing in fast proton-neon collisions",
abstract = "The variation of the intensity of the Ne K-L2,3L2,3(1D2) Auger line due to post-collision interaction has been measured as a function of the projectile energy at 0° (±1.4°) observation angle in 0.8-3.2 MeV H+-Ne collisions. The measured Auger-electron yield normalized to the theoretical or experimental total K-shell ionization cross section shows a strong enhancement when the projectile velocity is smaller than the Auger-electron velocity. The general agreement between the present experimental data and continuum distorted wave calculations provides a clear evidence that the observed impact-energy dependence is mostly due to the post-collision Coulomb focusing exerted by the projectile on the Auger electron.",
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T1 - Strong projectile-energy dependence of the Auger-line intensity at 0° due to Coulomb focusing in fast proton-neon collisions

AU - Víkor, Gy

AU - Ricz, S.

AU - Sulik, B.

AU - Tóth, L.

AU - Kövér, A.

AU - Végh, J.

PY - 1996/11/28

Y1 - 1996/11/28

N2 - The variation of the intensity of the Ne K-L2,3L2,3(1D2) Auger line due to post-collision interaction has been measured as a function of the projectile energy at 0° (±1.4°) observation angle in 0.8-3.2 MeV H+-Ne collisions. The measured Auger-electron yield normalized to the theoretical or experimental total K-shell ionization cross section shows a strong enhancement when the projectile velocity is smaller than the Auger-electron velocity. The general agreement between the present experimental data and continuum distorted wave calculations provides a clear evidence that the observed impact-energy dependence is mostly due to the post-collision Coulomb focusing exerted by the projectile on the Auger electron.

AB - The variation of the intensity of the Ne K-L2,3L2,3(1D2) Auger line due to post-collision interaction has been measured as a function of the projectile energy at 0° (±1.4°) observation angle in 0.8-3.2 MeV H+-Ne collisions. The measured Auger-electron yield normalized to the theoretical or experimental total K-shell ionization cross section shows a strong enhancement when the projectile velocity is smaller than the Auger-electron velocity. The general agreement between the present experimental data and continuum distorted wave calculations provides a clear evidence that the observed impact-energy dependence is mostly due to the post-collision Coulomb focusing exerted by the projectile on the Auger electron.

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