LASER STUDIES OF POLYSTYRENE PRECURSORS PERFORMED THROUGH RESONANT 2-PHOTON IONIZATION PROCESSES IN A SUPERSONIC MOLECULAR-BEAM

Laser-induced resonant two photon ionization (R2PI) of styrene and 4-fluorostyrene, pure or mixed with various molecules, has been studied in a supersonic molecular beam and ionic clusters have been detected by time-of-flight (TOF) mass spectrometry. The wavelength spectra of the heterogeneous clusters show specific shifts of the 0: band due to van der Waals intracluster interaction.