Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 2: Ion Scattering I
A 2.4: Vortrag
Montag, 2. April 2001, 16:30–16:45, H1028
Ionization and charge transfer in collisions between multiply charged noble gas ions — •A. Diehl1, R. Trassl1, H. Bräuning1, A. Theiss1, E. Salzborn1, L.P. Presnyakov2, and D.B. Uskov2 — 1Institut für Kernphysik, Justus - Liebig - Universität Giessen, Leihgesterner Weg 217, D - 35392 Giessen, Germany — 2Lebedev Physical Institute, Leninsky Prospect 53, 117924 Moscow, Russia
Employing a crossed - beams - experiment, we investigated collisions between two identical, multiply charged noble gas ions X = Ar, Kr and Xe. We measured the total cross sections for charge transfer, X4+ + X4+ —→ X3+ + X5+, and ionization, X4+ + X4+ —→ X4+ + X5+ + e− for center- of- mass energies from 10 up to 60 keV. The cross sections show almost no energy dependence at absolute values of about 10−16 cm2. The experimental data can be used, for instance, to estimate particle losses in storage rings due to charge - changing collisions between the stored ions.