Berlin 2001 – scientific programme

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A: Atomphysik

A 2: Ion Scattering I

A 2.3: Talk

Monday, April 2, 2001, 16:15–16:30, H1028

Ionisation of helium in relativistisc heavy-ion collisions — •Imre F. Barna, Werner Scheid und Norbert Grün — Institut für Theoretische Physik, Justus-Liebig-Universität Gießen

Coupled channel calculations are presented for the scattering of heavy ions on helium atoms. First the eigenvalue problem of helium is solved in a Slater-type and Coulomb wave packet basis of s, p and d functions. The Coulomb wave packets are important for a better description of the continuum states, especially of those that describe double ionisation. The projectile is considered as a classical point charge that passes the target on a straight line. The ion-atom interaction arises from the time-retarded Liénard- Wiechert Coulomb potentials.