Two-Photon Ionization of Polyatomic Molecules in a Mass Spectrometer

Abstract

Two-photon ionization of benzene molecules in a mass spectrometer is performed with a tunable frequency-doubled dye laser. The nonlinear ionization is resonantly enhanced by real intermediate rovibronic levels in the S1 state of the molecule. Our results show that stepwise multi-photon ionization is a very selective and versatile ionization source for a mass spectrometer. © 1978, Walter de Gruyter. All rights reserved.