Abstract
The ground state inversion potential method including diffraction (GIPM/D theory) is used here to calculate the partial subshell cross sections and asymmetry parameters describing photoionisation of the valence and inner valence orbitals of ethylene and benzene for photon energies from threshold to ≈ 80 eV, in general, and higher in some cases. The focus is on the modulation of cross sections and asymmetry parameters introduced by the interference of photoelectron amplitudes emitted from different atomic centres in the molecule. The results are compared with experimental data and with scattered wave Xα calculations where available. Molecular orbital branching ratios and total molecular cross sections are also considered.
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