Hannover 2003 – wissenschaftliches Programm
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A: Atomphysik
A 20: Elektronenrekombination
A 20.2: Vortrag
Freitag, 28. März 2003, 14:15–14:30, F342
Radiative recombination of few–electron highly–charged ions — •Andrey Surzhykov1, Stephan Fritzsche1, and Thomas Stöhlker2 — 1Universität Kassel, D–34132 Kassel, Germany — 2Gesellschaft für Schwerionenforschung, D–64291 Darmstadt, Germany
Relativistic collisions of highly–charged ions with low–Z target atoms have been studied intensively at the GSI storage ring in Darmstadt during recent years. One of the most basic processes in such collisions is the radiative recombination of an electron into a bound state of projectile, accompanied by a simultaneous photon emission. So far, however, most of the experimental studies concerned the electron capture into – initially – bare ions. For this capture, the total and differential cross sections have been measured by Stöhlker et al [1] and were found to be in good agreement with theoretical predictions, based on the Dirac’s theory [2].
While the radiative recombination of bare ions appears now to be well understood, both by experiment and theory, the electron capture into initially few–electron system is more complicated to describe due to the interelectronic effects. In order to study these effects, experiments on the radiative recombination of the initially hydrogen–like ions are planned at the GSI storage ring for the next years. In this contribution, we present the theoretical description of such capture process within the framework the Multi-configuration Dirac–Fock method. Calculations have been carried out for the total and angle–differential cross sections of the radiative recombination into hydrogen–like uranium for a wide range of energies.
[1] Th. Stöhlker, Physica Scripta, T80 (1999) 165.
[2] A. Ichihara, T. Shirai and J. Eichler, Phys. Rev. A49 (1994) 1875.