Two--Electron Atoms in Short Intense Laser Pulses

Details Two--Electron Atoms in Short Intense Laser Pulses Two--Electron Atoms in Short Intense Laser Pulses

1998-03-10

arxiv.org/abs/physics/9803010v1

Physics

Atomic Physics

14 pages, including figures

Scientific paper

10.1103/PhysRevA.58.1310

We discuss a method of solving the time dependent Schrodinger equation for atoms with two active electrons in a strong laser field, which we used in a previous paper [A. Scrinzi and B. Piraux, Phys. Rev. A 56, R13 (1997)] to calculate ionization, double excitation and harmonic generation in Helium by short laser pulses. The method employs complex scaling and an expansion in an explicitly correlated basis. Convergence of the calculations is documented and error estimates are provided. The results for Helium at peak intensities up to 10^15 W/cm^2 and wave length 248 nm are accurate to at least 10 %. Similarly accurate calculations are presented for electron detachment and double excitation of the negative hydrogen ion.

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