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A: Atomphysik

A 14: Ion Scattering II (with molecules and surfaces)

A 14.3: Vortrag

Donnerstag, 5. April 2001, 16:15–16:30, H1028

Ion-induced molecule fragmentation dynamics — •Lamri Adoui¹, Medhi Tarisien¹, Amine Cassimi¹, Francois Fremont¹, Benoit Gervais¹, Dominique Hennecart¹, and Patrick Moretto-Capelle² — ¹CIRIL (CEA/CNRS/Universite de Caen) Rue Claude Bloch BP5133 F-14070 Caen cedex 5 — ²IRSAMC, LCAR, Univ.Paul Sabatier F-31062 Toulouse cedex

The recent emergence of imaging technique gives rise to a growing interest in the understanding of ion-molecule fragmentation dynamics as one can expect to go further in the description of all of the stages of the collision. Information on the fragmentation dynamics is obtained from the coincident measurement of the momentum vector of all the fragments. In this work, we present highly charged ion-induced diatomic (CO) and triatomic (CO2) molecules fragmentation. In particular, the geometry modification of the CO2 molecule during the breakup is explored and the concerted or sequential nature of the dissociation is discussed for two different fragmentation channels.