Fragmentation of H2O molecules by slow multiply charged ions

Z. D. Pešić, R. Hellhammer, B. Sulik, N. Stolterfoht

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

We used the method of fragment ion spectroscopy to study ion-induced fragmentation of water molecules. An overview of our results for the energy and angular distribution of ionic fragments following the interaction with keV ions, ranging from 5 keV He2+ to 2 and 90 keV Ne9+, is presented. Specific attention is paid to the strong dependence on the projectile charge state and energy. The interpretation of the experimental results is guided by a classical trajectory simulation based on a Coulomb explosion model. In particular, the model elucidates the forward-backward asymmetry of the energy and intensity of the H+ fragments. The integrated cross-sections over all fragmentation channels, determined on the absolute scale, compare well with the cross-sections derived using the classical over-barrier model.

Original languageEnglish
Pages (from-to)88-97
Number of pages10
JournalAIP Conference Proceedings
Volume1080
DOIs
Publication statusPublished - Dec 1 2008
Event5th International Conference on Radiation Damage in Biomolecular Systems, RADAM 2008 - Debrecen, Hungary
Duration: Jun 13 2008Jun 15 2008

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Keywords

  • Fragmentation
  • Highly charged ion
  • Molecule

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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