Open Access
S-matrix theory of two-electron momentum distribution produced by double ionization in intense laser fields
Author(s) -
Andreas Becker,
Farhard Faisal
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.8.000383
Subject(s) - physics , atomic physics , recoil , electron , laser , ionization , polarization (electrochemistry) , momentum (technical analysis) , ion , femtosecond , density matrix , optics , quantum mechanics , chemistry , finance , economics , quantum
Recently observed momentum distribution of doubly charged recoil-ions of atoms produced by femtosecond infrared laser pulses is analyzed using the so-called intense-field many-body S-matrix theory. Observed characteristics of the momentum distributions, parallel and perpendicular to the polarization axis, are reproduced by the theory. It is shown that correlated energy-sharing between the two electrons in the intermediate state and their 'Volkov-dressing' in the final state, can explain the origin of these characteristics.