Journal
PHYSICAL REVIEW A
Volume 88, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.88.013201
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Funding
- Huber Curien program Van Gogh [13800UG, GDR 2758, ANR-10-BLAN-0428-01]
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)
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Ionization mechanisms of C-60 molecules irradiated by a short intense 800-nm laser pulse are studied. Angle-resolved photoelectron spectra show above-threshold ionization (ATI) patterns with a low peak contrast and a remarkably smooth angular distribution. The results are interpreted by combining two theoretical models. A time-dependent Schrodinger equation (TDSE) calculation based on the B-spline method that explicitly takes into account the molecular potential mimics the single-active-electron response while a statistical model accounts for the many-electron effects. We show that the latter are responsible for the loss of contrast in the ATI peaks. The smooth angular distribution arises in the TDSE calculation as a result of the high angular momentum of the C-60 ground electronic state and therefore is a manifestation of the atomic behavior of the molecule.
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