Interchannel coupling effects in the valence photoionization of SF$_{6}$

The complex Kohn and polyatomic Schwinger variational techniques have been employed to illustrate the interchannel coupling correlation effects in the valence photoionization dynamics of SF$_{6}$. Partial photoionization cross sections and asymmetry parameters of six valence subshells (1$t_{1g}$, 5$t_{1u}$, 1$t_{2u}$, 3$e_{g}$, 1$t_{2g}$, 4$t_{1u})$ are discussed in the framework of several theoretical and experimental studies. The complex Kohn results are in rather good agreement with experimental results, indicative of the fact that the interchannel coupling effects alter the photoionization dynamics significantly. We find that the dominant effect of interchannel coupling is to reduce the magnitude of shape resonant cross sections near threshold and to induce resonant features in other channels to which resonances are coupled.