Velocity and Charge State Dependences of Molecular Dissociation Induced by Slow Multicharged Ions

H. O. Folkerts, R. Hoekstra, and R. Morgenstern
Phys. Rev. Lett. 77, 3339 – Published 14 October 1996
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Abstract

Dissociation of CO molecules by collisions with He2+ and O7+ at keV energies has been investigated by measuring the charge states and kinetic energies of the ionized fragments in coincidence with each other. As opposed to earlier investigations with fast (MeV) projectiles we find that the kinetic energies of the fragment ions are strongly influenced by the projectiles' charge and velocity; e.g., O7+ impact results in 50% less kinetic energy release in the C+- O+ fragmentation than He2+ impact. For a qualitative understanding of these effects we invoke the classical overbarrier model.

  • Received 8 July 1996

DOI:https://doi.org/10.1103/PhysRevLett.77.3339

©1996 American Physical Society

Authors & Affiliations

H. O. Folkerts, R. Hoekstra, and R. Morgenstern

  • K.V.I. Atomic Physics, RijksUniversiteit Groningen, Zernikelaan 25, 9747 AA Groningen, The Netherlands

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Vol. 77, Iss. 16 — 14 October 1996

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