Theoretical investigation of the electron capture in collisions of O8+ ion with H and He atoms: Comparison between the Landau-Zener and the over-barrier models

L. Lugosi, L. Sarkadi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Analytical and semi-analytical theories based on the molecular and classical treatments have been applied for electron capture processes in collisions of hydrogen and helium atoms with low energy (E = 0.1,..., 10 keV/amu) O8+ bare ion impact. The used Landau-Zener model (LZ), which allows to give analytical formulas for the cross-sections in our recent approach and the modified over-barrier model (OBM) [Phys. Rev. A 62 (2000) 042711] are briefly summarized. The obtained values of the LZ and OBM cross-sections are compared with experimental data and the results of other sophisticated numerical calculations. It is found that the LZ model provides much reliable cross-sections for charge transfer than the OBM model.

Original languageEnglish
Pages (from-to)591-595
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume205
DOIs
Publication statusPublished - May 2003

Fingerprint

electron capture
Ions
Atoms
collisions
Electrons
atoms
ions
cross sections
Helium
ion impact
helium atoms
Charge transfer
Hydrogen
hydrogen atoms
charge transfer

Keywords

  • Ion-atom collisions
  • Single and double capture
  • Total cross-sections

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Instrumentation
  • Surfaces and Interfaces

Cite this

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title = "Theoretical investigation of the electron capture in collisions of O8+ ion with H and He atoms: Comparison between the Landau-Zener and the over-barrier models",
abstract = "Analytical and semi-analytical theories based on the molecular and classical treatments have been applied for electron capture processes in collisions of hydrogen and helium atoms with low energy (E = 0.1,..., 10 keV/amu) O8+ bare ion impact. The used Landau-Zener model (LZ), which allows to give analytical formulas for the cross-sections in our recent approach and the modified over-barrier model (OBM) [Phys. Rev. A 62 (2000) 042711] are briefly summarized. The obtained values of the LZ and OBM cross-sections are compared with experimental data and the results of other sophisticated numerical calculations. It is found that the LZ model provides much reliable cross-sections for charge transfer than the OBM model.",
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T1 - Theoretical investigation of the electron capture in collisions of O8+ ion with H and He atoms

T2 - Comparison between the Landau-Zener and the over-barrier models

AU - Lugosi, L.

AU - Sarkadi, L.

PY - 2003/5

Y1 - 2003/5

N2 - Analytical and semi-analytical theories based on the molecular and classical treatments have been applied for electron capture processes in collisions of hydrogen and helium atoms with low energy (E = 0.1,..., 10 keV/amu) O8+ bare ion impact. The used Landau-Zener model (LZ), which allows to give analytical formulas for the cross-sections in our recent approach and the modified over-barrier model (OBM) [Phys. Rev. A 62 (2000) 042711] are briefly summarized. The obtained values of the LZ and OBM cross-sections are compared with experimental data and the results of other sophisticated numerical calculations. It is found that the LZ model provides much reliable cross-sections for charge transfer than the OBM model.

AB - Analytical and semi-analytical theories based on the molecular and classical treatments have been applied for electron capture processes in collisions of hydrogen and helium atoms with low energy (E = 0.1,..., 10 keV/amu) O8+ bare ion impact. The used Landau-Zener model (LZ), which allows to give analytical formulas for the cross-sections in our recent approach and the modified over-barrier model (OBM) [Phys. Rev. A 62 (2000) 042711] are briefly summarized. The obtained values of the LZ and OBM cross-sections are compared with experimental data and the results of other sophisticated numerical calculations. It is found that the LZ model provides much reliable cross-sections for charge transfer than the OBM model.

KW - Ion-atom collisions

KW - Single and double capture

KW - Total cross-sections

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