X M Tong et al 2005 J. Phys. B: At. Mol. Opt. Phys. 38 333 doi:10.1088/0953-4075/38/4/002
X M Tong, Z X Zhao, A S Alnaser, S Voss, C L Cocke and C D Lin
Show affiliationsWe studied the angular distributions of the fragmented ions of diatomic molecules in an intense linearly polarized short laser pulse. In addition to the well-known dynamic alignment of the neutral molecules before ionization, we identified a more important post ionization alignment effect of the molecular ions. The latter is modelled quantum mechanically as resulting from the breakup of a rotating linear rotor. We showed that only for very short pulses are the two alignment mechanisms not important. In this case the angular distributions of the fragmented ions mimic the shape of the electronic density of the outermost molecular orbital.
34.50.Gb Electronic excitation and ionization of molecules
42.65.Re Ultrafast processes; optical pulse generation and pulse compression
Issue 4 (28 February 2005)
Received 26 October 2004
Published 7 February 2005
X M Tong et al 2005 J. Phys. B: At. Mol. Opt. Phys. 38 333
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