Multi-electron giant dipole resonances of atoms in crossed electric and magnetic fields
arXiv:physics/0506007 · doi:10.1209/epl/i2005-10090-6
Abstract
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 $μ$s for strong electric fields.
7 pages, 3 figures