Complete determination of the photoionization dynamics of a polyatomic molecule.II.Determination of radial dipole matrix elements and phases from experimental photoelectron angular distributions from A ~1A_u acetylene

摘要

We present a fit to photoelectron angular distributions(PADs)measured following the photoionization of rotationally selected A ~1A_u state acetylene.In the case of the 4~1 ~2SIGMA_u~-vibronic state of the ion,we are able to use this fit to make a complete determination of the radial dipole matrix elements and phases connecting the prepared level to each photoelectron partial wave.We have also investigated other Renner-Teller subbands with a view to disentangling geometrical and dynamical contributions to the resulting PADs.