Correlated eikonal initial state in ion-atom collisions

M. F. Ciappina*, S. Otranto, C. R. Garibotti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


An approximation is developed to deal with the ionization of atoms by bare charged ions. In this method the transition amplitude describing the three-body final state is evaluated using a continuum correlated wave and that for the initial state by an analytical continuation of the [Formula Presented] model to complex momenta. This procedure introduces in the atomic bound state a kinematical correlation with the projectile motion. Doubly differential cross sections (DDCS’s) are computed for collisions of [Formula Presented] and [Formula Presented] ions with He atoms. Results for the DDCS’s in the forward direction are compared with experimental data and other theoretical models. We find an enhancement of the distribution for low energy electrons and that the asymmetry of the electron capture to the continuum (ECC) peak is correctly described. 5555 2002 The American Physical Society.

Original languageEnglish
Pages (from-to)5
Number of pages1
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
StatePublished - 2002
Externally publishedYes


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