Fragmentation of water molecules in slow He2++H2O collisions

P. Sobocinski, Z. D. Pešić, R. Hellhammer, N. Stolterfoht, B. Sulik, S. Legendre, J. Y. Chesnel

Research output: Article

22 Citations (Scopus)


The fragmentation in the collision system 3He 2++H2O has been investigated experimentally at projectile energies ranging from 1 keV to 5 keV. The fragments were detected at angles from 25° to 130°. The experimental spectra exhibit two groups of peaks. The first one, which extends up to ∼30 eV, is interpreted in terms of a Coulomb explosion mechanism. A second group observed at higher energies, corresponds to fragments and scattered projectiles produced in quasi-binary collisions. In the analysis, particular attention is paid to these energetic ions. Absolute cross sections dσ/dΩ, differential in the observation angle, are found to be in good agreement with calculations assuming that the interaction of the screened nuclei is described by the ZBL (Ziegler, Biersack and Littmark) potential.

Original languageEnglish
Pages (from-to)2495-2504
Number of pages10
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number14
Publication statusPublished - júl. 28 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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    Sobocinski, P., Pešić, Z. D., Hellhammer, R., Stolterfoht, N., Sulik, B., Legendre, S., & Chesnel, J. Y. (2005). Fragmentation of water molecules in slow He2++H2O collisions. Journal of Physics B: Atomic, Molecular and Optical Physics, 38(14), 2495-2504.