MBI-Mitarbeiter - Persönliche Daten

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 Publikationen

  1. Magneto-optical trapping of Stark-slowed metastable He atoms

    R. Jung, S. Gerlach, R. Schumann, G. von Oppen, U. Eichmann

    European Physical Journal D 23 (2003) 415-419
  2. Fano Line Shapes Reconsidered: Symmetric Photoionization Peaks from Pure Continuum Excitation

    U. Eichmann, T. F. Gallagher, R. M. Konik

    Physical Review Letters 90 (2003) 233004-1/1-4
  3. Photoexcitation and ionization of cold metastable helium atoms

    R. Jung, S. Gerlach, G. von Oppen, U. Eichmann

    Interactions in ultracold gases: from atoms to molecules Wiley (2002) 394-398
  4. Was wiegt ein Elektron?

    U. Eichmann

    Physik Journal Februar 1 (2002) 16-17
  5. 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
  6. 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
  7. Licht-Materie-Wechselwirkungen in fundamentalen quantenmechanischen Systemen

    U. Eichmann

    FB Physik Habilitation Technische Universität (2001)
  8. 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
  9. 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)
  10. 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