Frankfurt 2006 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
A: Atomphysik
A 20: Poster II: Atomare Systeme in starken Laserpulsen und statischen Feldern
A 20.6: Poster
Donnerstag, 16. März 2006, 16:30–18:30, Labsaal
Relativistic quantum optics in multiply charged ions — •Henrik G. Hetzheim, Guido R. Mocken, and Christoph H. Keitel — Max-Planck Institut für Kernphysik, Heidelberg, Germany
The interaction of ultra-intense laser fields with highly charged ions via
multiphoton coupling [1, 2] is known to be the source of a large variety of
quantum phenomena.
To analyze these, we start with the generation of the energy eigenstates of Ne9+ by means of an autocorrelation spectral method.
Then, employing a split-operator algorithm, we investigate the time resolved population transfer from the ground state to the various excited states
during the interaction with a linearly polarized laser field and its dependence on the
laser pulse’s length and intensity, as well as on the initial quantum state of the ionic system.
The numerical calculations are carried out in the multiphoton regime so that
the associated radiation spectrum includes only non-tunneling harmonics [3].
The results are obtained by using the full Dirac equation in 2D, which
provides a more precise picture of the occurring multiphoton resonances than other nonrelativistic treatments.
The role of relativistic coherence and interference effects will be discussed.
[1] C. H. Keitel, Contemporary Physics, 42, 353–363 (2001).
[2] S. X. Hu and C. H. Keitel, Phys. Rev. A 63, 053402 (2001).
[3] S. X. Hu, A. F. Starace, W. Becker, W. Sandner and D. B. Milošević, J. Phys. B: At. Mol. Opt. Phys. 35, 627–650 (2002).