MBI Staff Member – Personal info

Position

Member of Project 2.2 "Strong-field Few-body Systems"

Research

Our group's research focus is set on the investigation of atomic ionization dynamics in strong laser fields, where the laser intensities cover a range from 1014 W/cm2 to 1019 W/cm2. Earlier research highlights embrace results on simultaneous double tunneling, suppression of non-sequential ionization in relativistic laser fields, and core relaxation effects in relativistic laser fields. More recently, the focus of our investigations has shifted towards strong-field processes that lead to a) excited neutral atoms, b) neutral excited fragments after strong-field dissociation of molecules, and c) high survival rates of Rydberg atoms. Moreover, the survival of atoms in neutral excited states is accompanied by kinematic effects on neutral atoms in the focused laser beam, which we investigate using a direct imaging technique of excited atoms.

The figure shows the color-coded distribution of deflected (accelerated) neutral He atoms in a focused short-pulse laser beam with an intensity of 8x1015W/cm2.

MBI Publications

  1. Relativistic laser-field-drift suppression of nonsequential multiple ionization

    M. Dammasch, M. Dörr, U. Eichmann, E. Lenz, W. Sandner

    Physical Review A 64 (2001) 061402/1-4
  2. Strong field double ionization of He-like systems: the case of In+ ions

    H. Maeda, M. Dammasch, U. Eichmann, W. Sandner

    Physical Review A 63 (2001) 025401/1-4
  3. Licht-Materie-Wechselwirkungen in fundamentalen quantenmechanischen Systemen

    U. Eichmann

    FB Physik Habilitation Technische Universität (2001)
  4. Multipole structures in the excitation process of high/doubly excited states

    W. Huang, C. Rosen, U. Eichmann, W. Sandner

    Physical Review A 61 (2000) 040502(R) 4 pages
  5. Strong-field multiple ionization of krypton

    H. Maeda, M. Dammasch, U. Eichmann, W. Sandner, A. Becker, F. H. M. Faisal

    Physical Review A 62 (2000) 035402 (4 pages)
  6. Collective multi-electron tunneling ionization in strong fields

    U. Eichmann, M. Dörr, H. Maeda, W. Becker, W. Sandner

    Physical Review Letters 84 (2000) 3550-3553
  7. Collective Multi-Electron Tunneling Ionization in Strong Fields

    U. Eichmann, M. Dörr, W. Becker, M. Dammasch, W. Sandner

    AIP Conf. Proc. - Multiphoton Processes 525 American Institute of Physics (2000) 199-210
  8. Autoionization distribution of atomic high doubly excited states: A "breathing spheres" approach

    W. Huang, U. Eichmann, W. Sandner

    Physical Review A 59 (1999) 2744-2748
  9. Time-dependent screening in the photoionization of doubly excited two-electron systems

    C. Rosen, M. Dörr, U. Eichmann, W. Sandner

    Physical Review Letters 83 (1999) 4514-4517
  10. Laser cooling of metastable He atoms in an inhomogeneous electric field

    R. Schumann, C. Schubert, U. Eichmann, R. Jung, G. von Oppen

    Physical Review A 59 (1999) 2120-2125