Ionization dynamics of extended multielectron systems

Ionization of multielectron systems is investigated by using one-dimensional, multiconfiguration time-dependent Hartree-Fock calculations. Our analysis reveals the key physical processes underlying ionization of complex systems. The laser-induced multielectron dynamics, and therewith the ionization...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2004-10, Vol.70 (4), Article 041401
Main Authors: Kitzler, M., Zanghellini, J., Jungreuthmayer, Ch, Smits, M., Scrinzi, A., Brabec, T.
Format: Article
Language:English
Subjects:
ATOMIC AND MOLECULAR PHYSICS
HARTREE-FOCK METHOD
LASER RADIATION
ONE-DIMENSIONAL CALCULATIONS
OPTICS
PHOTOIONIZATION
PHOTON-MOLECULE COLLISIONS
POLARIZATION
QUANTUM MECHANICS
TIME DEPENDENCE
TUNNEL EFFECT
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Summary:Ionization of multielectron systems is investigated by using one-dimensional, multiconfiguration time-dependent Hartree-Fock calculations. Our analysis reveals the key physical processes underlying ionization of complex systems. The laser-induced multielectron dynamics, and therewith the ionization process, depend on the ratio of laser frequency ({omega}{sub 0}) to plasmon frequency ({omega}{sub p}). In the overresonant limit ({omega}{sub 0}>>{omega}{sub p}), tunnel ionization is destroyed and ionization takes place by a classical over the barrier mechanism. In the underresonant regime ({omega}{sub 0}
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.70.041401