Comparison of the nuclear motion in the ultrafast fragmentation of SF6, CF4 and CH3F

G. Prümper, X. J. Liu, K. Ueda, Y. Tamenori

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Resonant F 1 s excitation of SF5, CF4 and CH3F molecules has been used to initiate ultrafast fragmentation. In all these reactions the fragmentation is fast enough so that atomic-like Auger decay can happen at large internuclear distances. The detection of an atomic-like F 1 s Auger electron allows to focus on the study of this reaction channel. We analyzed the kinetic energy of the F+ fragment that is detected after an atomic-like Auger electron has been emitted using high-resolution electron-ion momentum coincidence spectroscopy. In this way we could study the kinetic energy release of the fragmentation as a function of the excitation energy. The results indicate that the nuclear motion within the radical remainder SF5, CF3 and CH3 must be considered to understand the fragmentation dynamics.

Original languageEnglish
Pages (from-to)2019-2023
Number of pages5
JournalRadiation Physics and Chemistry
Volume75
Issue number11 SPEC. ISS.
DOIs
Publication statusPublished - 2006 Nov

Keywords

  • Coincidence
  • Core excitation
  • Electron spectroscopy
  • Nuclear motion
  • Resonant Auger

ASJC Scopus subject areas

  • Radiation

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