Berlin 2001 – wissenschaftliches Programm
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A: Atomphysik
A 19: Electrons, incl. Scattering and Recombination
A 19.7: Vortrag
Freitag, 6. April 2001, 17:15–17:30, H1028
QED corrections to the REC in heavy highly charged ions — •Thomas Beier1, Jörg Eichler2, Vladimir M. Shabaev2,3, and Vladimir A. Yerokhin2,3 — 1GSI, Atomphysik, Planckstr. 1, D-64291 Darmstadt, Germany — 2HMI, Theoretische Physik, Glienicker Str. 100, D-14109 Berlin, Germany — 3St. Petersburg State University, Dept. of Physics, 198904 St. Petersburg, Russia
We present our calculations of the quantum electrodynamical (QED)
corrections to the radiative electron capture in heavy highly
charged ions. Formulae for all corrections of order α
were derived in the framework of the two-time Green function method,
and the calculations were carried out employing
propagators for electrons in the Coulomb field of the nucleus [1].
Therefore the calculations are fully relativistically and consider
the binding to all orders. Results for the differential cross sections
are presented which amount up to 1 % for uranium projectiles with an
energy
higher than 1 GeV/u. As a next step, we are going to investigate the
pair production related to this process.
The work is supported by the DFG (Grants No. 436 RUS 113/479 and 113/616),
the RFBR (Grant No. 98-02004111), by GSI, and by the EU-TMR programme
(ERB FMRX CT 97-0144).
[1] V.M. Shabaev et al., Phys. Rev. A 61 (2000) 052112