Electron capture in the ion-cluster collision: effect of the electronic interaction |
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Authors: | R.-J. Tarento P. Joyes J. van de Walle M. Nakamura |
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Affiliation: | (1) Laboratoire de Physique des Solides, batiment 510, Université d'Orsay, 91405 Orsay Cedex, France, FR |
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Abstract: | We investigate the electron capture occurring in the collision between an ion A+ and a cluster An (n = 5). The process has been modelled within the Hubbard Hamiltonian,which takes into account the intrasite U electron correlation. An exact procedure has been numerically applied which involves all the excited states to examine the time evolution of the system during the collision. We have applied the model to the sodium case. We have investigated the time evolution of the electron population during the collision on the projectile versus the kinetic energy of the projectile. It displays some oscillations which means that the electron exchanges between the ion and the cluster occurs alternatively in one direction and the other. We also vary U and examine its influence on the dynamics of the oscillation of the average population. Finally the cross section is derived versus the energy and U. Received 29 November 2000 |
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Keywords: | PACS. 36.40.-c Atomic and molecular clusters – 36.40.Cg Electronic and magnetic properties of cluster – 34.70.+e Charge transfer |
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