Towards molecular frame photoelectron angular distributions in polyatomic molecules from lab frame coherent rotational wavepacket evolution

The application of a matrix-based reconstruction protocol for obtaining Molecular Frame (MF) photoelectron angular distributions (MFPADs) from laboratory frame (LF) measurements (LFPADs) is explored. Similarly to other recent works on the topic MF reconstruction, this makes use time-resolved LF measurements, in which rotational wavepacket prepared and probed via photoionization, followed by numerical routine; however, contrast methodologies, developed herein does not require determination photoionization matrix elements, consequently takes relatively simple form (matrix transform making Moore-Penrose inverse). Significantly, simplicity allows method successful MFPADs polyatomic molecules. scheme demonstrated numerically two realistic cases, $N_2$ $C_2H_4$. new technique expected be generally applicable range problems involving