Berlin 2001 – scientific programme

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A: Atomphysik

A 5: Posters Tuesday (Photoionisation, Multi Photon Processes)

A 5.23: Poster

Tuesday, April 3, 2001, 12:30–15:00, AT3

Multiply Charged Ions in Strong Laser Fields — •M. Casu, S.X. Hu, and C.H. Keitel — Theoretische Quantendynamik, Fakultät für Physik, Universit"at Freiburg, Hermann-Herder-Str.3, 79104 Freiburg

Multiply charged ions [1] in strong laser fields have recently been pointed out as a possible source of coherent radiation in the x-ray regime [2]. Especially strong Coulomb interaction between the electron and the ion in highly charged ions [1] are noticeable and lead to evident relativistic effects. Therefore a relativistic investigation is appropriate and as a first step we have realized this with a lower dimensional Dirac code. We have examined highly charged, hydrogen-like ions up to an atomic number of Z=92 in laser fields with intensities up to the highest realized so far. In particular the characteristic lines of the excited states of the resonance spectra have been examined in detail. The relativistic theory has then been compared with the Schrödinger theory, so that relativistic signatures could be identified.
P.H. Kokler und Th. Stoehlker, Adv.At.Mol.Opt.Phys. 37, 297 (1996)
M. Casu, C. Szymanowski, S.X. Hu und C.H. Keitel, J.Phys. B 33, L411 (2000)