Research Papers in Physics and Astronomy


Date of this Version

June 2001


Published by American Physical Society. Phys. Rev. Letters 86, 5687 (2001). Copyright © 2001 American Physical Society. Permission to use.


We predict photoelectron angular distributions for double ionization of Li- by both weak and intense ultrashort, linearly polarized laser pulses by direct numerical integration of the three-dimensional, time-dependent Schrödinger equation. Li- is treated as a two-active electron system. Near threshold, for low intensity we recover general features of angular distributions for one-photon double ionization. For the intense field (multiphoton) case, the photoelectron angular distribution changes significantly, particularly in directions parallel and perpendicular to the laser polarization axis.

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