Physics – Atomic Physics
Scientific paper
2004-09-29
Phys. Rev. A 71, 013418 (2005)
Physics
Atomic Physics
13 pages, 10 figures. Submitted to Physical Review A
Scientific paper
10.1103/PhysRevA.71.013418
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$_2$H$_4$), benzene (C$_6$H$_6$), fluorobenzene (C$_6$H$_5$F), and ortho chlorofluorobenzene (1,2 C$_6$H$_4$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 non-linear polyatomic molecules. Our investigations show that the orientational dependence of ionization yields is primarily determined by the nodal surface structure of the molecular orbitals.
Bisgaard Christer Z.
Kjeldsen Thomas K.
Madsen Lars Bojer
Stapelfeldt Henrik
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