Influence of molecular symmetry on strong-field ionization: Studies on ethylene, benzene, fluorobenzene, and chlorofluorobenzene

Journal Article · Sat Jan 01 04:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.013418· OSTI ID:20650271

Kjeldsen, Thomas K; Bisgaard, Christer Z; Madsen, Lars Bojer; Stapelfeldt, Henrik ^[1]

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1. Department of Physics and Astronomy, University of Aarhus, 8000 Aarhus C (Denmark)

Using the molecular strong-field approximation we consider the effects of molecular symmetry on the ionization of molecules by a strong, linearly polarized laser pulse. Electron angular distributions and total ionization yields are calculated as a function of the relative orientation between the molecule and the laser polarization. Our studies focus on ethylene (C{sub 2}H{sub 4}), benzene (C{sub 6}H{sub 6}), fluorobenzene (C{sub 6}H{sub 5}F), and ortho chlorofluorobenzene (1,2 C{sub 6}H{sub 4}ClF), the molecules representing four different point groups. The results are compared with experiments, when available, and with the molecular tunneling theory appropriately extended to nonlinear polyatomic molecules. Our investigations show that the orientational dependence of ionization yields is primarily determined by the nodal surface structure of the molecular orbitals.

• OSTI ID: 20650271
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 71; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
BENZENE
ELECTRONS
ETHYLENE
IONIZATION
LASER RADIATION
MOLECULES
NONLINEAR PROBLEMS
ORIENTATION
POLARIZATION
PULSES
SYMMETRY
TUNNEL EFFECT
YIELDS