Electron-impact ionization-excitation dynamics at large momentum transfer: (e,2e) studies on He and H2

Research output: Contribution to journalConference articlepeer-review

Abstract

We report an (e,2e) study on simultaneous ionization-excitation processes of He and H2 at large momentum transfer. The symmetric noncoplanar (e,2e) cross sections have been measured for transitions to excited ion states. It has been found that noticeable higher-order effects are involved even at the rather high impact energies employed, which ranged between 1.2 and 4.3 keV. Second Born approximation calculations satisfactorily account for the experimental results, indicating that the second-order two-step mechanisms serve as a key to understanding the ionization-excitation dynamics. Roles of the two-step mechanisms will be fully discussed.

Original languageEnglish
Article number042051
JournalJournal of Physics: Conference Series
Volume194
Issue number4
DOIs
Publication statusPublished - 2009 Dec 24
Event26th International Conference on Photonic, Electronic and Atomic Collisions - Kalamazoo, United States
Duration: 2009 Jul 222009 Jul 28

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Electron-impact ionization-excitation dynamics at large momentum transfer: (e,2e) studies on He and H<sub>2</sub>'. Together they form a unique fingerprint.

Cite this