F1s and C1s photoelectron angular distributions are considered for CH3F, a molecule which does not
support any shape resonance. In spite of the absence of features in the photoionization cross section
profile, the recoil frame photoelectron angular distributions (RFPADs) exhibits dramatic changes depending
on both the photoelectron energy and polarization geometry. Time-dependent density functional
theory calculations are also given to rationalize the photoionization dynamics. The RFPADs
have been compared with the theoretical calculations, in order to assess the accuracy of the theoretical
method and rationalize the experimental findings. The effect of finite acceptance angles for both
ionic fragments and photoelectrons has been included in the calculations, as well as the effect of rotational
averaging around the fragmentation axis. Excellent agreement between theory and experiment
is obtained, confirming the good quality of the calculated dynamical quantities (dipole moments and
phase shifts).
