Time-dependent density functional theory applied to nonsequential multiple ionization of Ne at 800 nm

26 March 2001

journal article
Published by Optica Publishing Group in Optics Express

Vol. 8 (7) , 377-382
https://doi.org/10.1364/oe.8.000377

Abstract

Time-dependent density functional theory (TDDFT) is employed to study the interaction of a Ne atom with short and strong 800 nm laser pulses. In the intensity regime covered (10¹⁴–10¹⁶ W/cm²) up to triply ionized Ne is observed. Good quantitative agreement with the experimental Ne⁺ ion-yield (and the Ne²⁺-yield near saturation) is obtained. Nonsequential ionization (NSI) leads to a strong increase of the probability for double and triple ionization when compared to a single active electron (SAE)-approach. A NSI-“knee” is observed but the agreement with its experimental counterpart is not satisfactory.

Keywords

ELECTRIC FIELDS
ELECTRONS
FEMTOSECOND LASERS
GAS LASERS
IONIZATION
LASER LIGHT

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