University P. & M. Curie, Paris, France

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Univ. Pierre Marie Curie – CNRS, France
A. Dubois and P.D. Fainstein (Centro Atomico Bariloche CNEA, Argentina),
for the distorted waves code available at IAEA
The CDW code calculates total and differential ionization cross sections for ion-atom collisions at high energy (MeV). Available on-line at the above IAEA web site. Target is either a hydrogen-like ion or neutral He, and the projectile is a bare nucleus. VPN code calculates charge transfer and excitation cross sections for similar targets and projectiles by means of close coupling for energies from 1 keV/amu to a few hundred keV/amu (available at the above web site). A two-electron, ion-atom or ion- molecule, quasi-two-electron system is in the process of development, which will also use close-coupling to produce total cross sections for charge transfer, excitation, and ionization for energies from 100 eV/amu to 500 keV/amu.

One- and two-electron processes in multi-center collisional systems[1]

In the presentation, we present briefly the theoretical models used to evaluate cross sections of various electronic processes occurring in ion-atom and ion-molecule collisions. Lattice representation calculations are illustrated by the presentation of results for ionizing ion-molecule collisions. For atomic targets, we show double capture to autoionizing states cross sections computed by spectral methods. Finally, before some conclusive remarks, the presentation of our partners is done together with the implementation of the codes at the IAEA web site.


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