Journal of Chemical Physics, Vol.111, No.10, 4535-4547, 1999
The 5a(1)(-1) photoionization of oriented CF3I molecules: Angular distributions of the ka(1) and ke photoelectron continua
Molecule-frame photoelectron angular distributions are obtained by the measurement of electron-ion recoil vector correlations in the dissociative 5a(1)(-1) photoionization of CF3I. The laboratory frame orientation of an ionized molecule is inferred from the CF3+ fragment ion recoil direction and the contributions of radiation polarized perpendicular and parallel to the molecular axis can be estimated. This allows the degenerate ka(1) and ke continua to be distinguished, each having a distinctive angular distribution. Experimental data are compared with calculated fixed-molecule photoelectron angular distributions.