Validity of time-dependent Hartree-Fock theory for the multiphoton ionization of atoms
- 6 May 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 66 (18) , 2305-2307
- https://doi.org/10.1103/physrevlett.66.2305
Abstract
The validity of time-dependent Hartree-Fock (TDHF) theory is explored for the multiphoton ionization of atoms. The 3D electrostatic interaction is replaced by a 1D soft-core interaction which allows the construction of an N-electron atom in only N dimensions. For multiphoton ionization of a two-electron ‘‘He’’ atom in its ground state, we solve the time-dependent Schrödinger equation directly on a 2D lattice and solve a 1D formulation of the TDHF equations. The 2D lattice solution compares favorably with the frozen-core TDHF results, but not with the full nonlinear TDHF results.Keywords
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