Ellipticity dependence of strong field electron recollision for molecular structural imaging

Non-sequential double ionisation (NSDI) of CO in the tunnel ionisation regime is modelled and related to the Highest Occupied Molecular Orbital (HOMO) structure. Angularly resolved NSDI yields as a function of laser ellipticity is used to map nodal planes of the molecular orbital from which the elec...

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Bibliographic Details
Published in:Journal of modern optics 2013-10, Vol.60 (17), p.1379-1387
Main Authors: Weber, S.J., Oppermann, M., Ivanov, M.Yu, Marangos, J.P.
Format: Article
Language:English
Subjects:
Carbon dioxide
Ellipticity
Ions
molecular alignment
Optics
Orbits
Scientific imaging
tunnel ionisation
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Summary:Non-sequential double ionisation (NSDI) of CO in the tunnel ionisation regime is modelled and related to the Highest Occupied Molecular Orbital (HOMO) structure. Angularly resolved NSDI yields as a function of laser ellipticity is used to map nodal planes of the molecular orbital from which the electron is emitted. Peaks in the ellipticity dependence that are shifted to non-zero ellipticity and a finite degree of alignment are included in the model. Comparison with recent experiment reveals the presence of other orbitals contribution in CO when probed at 1350 nm.
ISSN:0950-0340
1362-3044
DOI:10.1080/09500340.2013.814925