Open AccessNon-sequential double ionization of helium and related wave-function dynamics obtained from a five-dimensional grid calculation
Author(s) -
H. G. Müller
Publication year - 2001
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.8.000417
Subject(s) - double ionization , ionization , helium , physics , electric field , atomic physics , electron , pulse (music) , optics , ion , quantum mechanics , detector
Numerical integration of the time-dependent Schroedinger equation for two three-dimensional electrons reveals the behavior of helium in the presence of strong 390 nm and 800 nm light. Non-sequential double ionization is seen to take place predominantly at times when the electric-field component of the light reaches its peak value. Double ionization starts only in the second cycle of a flat-top pulse, and reaches a stable value only after many cycles, showing that recollision, sometimes through very long trajectories, must be involved.