Femtosecond time-resolved laser desorption/ionization mass spectrometry of perylene crystals using Raman-induced vibrational excitation

- Femtosecond pump-probe mass spectrometry was carried out for perylene crystals.
- Perylene crystals were vibrationally excited by a Raman-induced process.
- Peak intensity was enhanced by excitation of intramolecular vibrations.
- Enhancement was slightly by excitation of intermolecular vibrations.
- Dimer cations were desorbed earlier than monomer cation.