Multi-electron giant dipole resonances of atoms in crossed electric and magnetic fieldsS. Zöllner1, H.-D. Meyer1 and P. Schmelcher1, 2
1 Theoretische Chemie, Physikalisch-Chemisches Institut, Universität Heidelberg Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
2 Physikalisches Institut, Universität Heidelberg - Philosophenweg 12 69120 Heidelberg, Germany
received 21 April 2005; accepted in final form 30 May 2005
published online 1 July 2005
Multi-electron giant dipole resonances of atoms in crossed electric and magnetic fields are investigated. Stationary configurations corresponding to a highly symmetric arrangement of the electrons on a decentered circle are derived, and a normal-mode stability analysis is performed. A classification of the various modes, which are dominated either by the magnetic or Coulomb interactions, is provided. A six-dimensional wave-packet dynamical study, based on the MCTDH approach, is accomplished for the two-electron resonances, yielding in particular lifetimes of more than 0.1 for strong electric fields.
32.60.+i - Zeeman and Stark effects.
32.10.-f - Properties of atoms.
32.30.-r - Atomic spectra.
© EDP Sciences 2005