Variable time lag and backward ejection in full-dimensional analysis of strong-field double ionization.
Ensembles of 400,000 two-electron trajectories in three space dimensions are used with Newtonian equations of motion to track atomic double ionization under very strong laser fields. We report a variable time lag between e-e collision and double ionization, and find that the time lag plays a key role in the emergence directions of the electrons. These are precursors to production of electron momentum distributions showing substantial new agreement with experimental data.
Haan
S L
SL
Department of Physics and Astronomy, Calvin College, Grand Rapids Michigan 49546, USA. haan@calvin.edu
Breen
L
L
Karim
A
A
Eberly
J H
JH