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Title: Strong-field ionization of lithium

We report photoelectron energy spectra, momentum, and angular distributions for the strong-field single ionization of lithium by 30-fs laser pulses. For peak intensities between 10{sup 11} and 10{sup 14} W/cm{sup 2} at a central wavelength of 785 nm, the classical over-the-barrier intensity was reached well inside the multiphoton regime. The complete vector momenta of the ionization fragments were recorded by a reaction microscope with a magneto-optically trapped target (MOTREMI). On the theoretical side, the time-dependent Schroedinger equation was solved by two independent methods seeking the solution directly on a radial grid. Distinct differences between the results of both calculations and also in comparison with experiment point to a high sensitivity of this reaction with respect to small details, particularly in the description of the Li{sup +} core.
Authors:
; ; ; ; ;  [1] ; ;  [2] ;  [3] ;  [4]
  1. Max-Planck-Institut fuer Kernphysik, Saupfercheckweg 1, DE-69117 Heidelberg (Germany)
  2. Research School of Physical Sciences and Engineering, Australian National University, Canberra, ACT 0200 (Australia)
  3. Institute of Nuclear Physics, Moscow State University, Moscow RU-119991 (Russian Federation)
  4. Department of Physics and Astronomy, Drake University, Des Moines, Iowa 50311 (United States)
Publication Date:
OSTI Identifier:
21537180
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 83; Journal Issue: 2; Other Information: DOI: 10.1103/PhysRevA.83.023413; (c) 2011 American Institute of Physics
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ANGULAR DISTRIBUTION; COMPARATIVE EVALUATIONS; ENERGY SPECTRA; IONIZATION; LASER RADIATION; LASERS; LITHIUM; LITHIUM IONS; MATHEMATICAL SOLUTIONS; MICROSCOPES; MULTI-PHOTON PROCESSES; PEAKS; PULSES; SCHROEDINGER EQUATION; TIME DEPENDENCE; WAVELENGTHS ALKALI METALS; CHARGED PARTICLES; DIFFERENTIAL EQUATIONS; DISTRIBUTION; ELECTROMAGNETIC RADIATION; ELEMENTS; EQUATIONS; EVALUATION; IONS; METALS; PARTIAL DIFFERENTIAL EQUATIONS; RADIATIONS; SPECTRA; WAVE EQUATIONS