title: The (2 + 2) REMPI study of methylamine in the 430-485-nm region.
abstract: The mass resolved (2 + 2) resonance enhanced multiphoton ionization (REMPI) spectra of methylamine (MA) via the (nN,3s) Rydberg state were obtained in the 430-485-nm region using a time-of-flight (TOF) mass spectrometer. They have the same vibrational structure mainly due to NH2-wagging mode excitation. The parent ion relative intensity increases at longer wavelengths. The multiphoton ionization mechanism is discussed.
authors.affiliation: Laser Spectroscopy Laboratory, Anhui Institute of Optics and Fine Mechanics, Academia Sinica, Hefei, People's Republic of China.
authors.forename: J
authors.initials: J
authors.lastname: Wei
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: L
authors.initials: L
authors.lastname: Fang
authors.forename: L
authors.initials: L
authors.lastname: Zhang
authors.forename: J
authors.initials: J
authors.lastname: Cai
mesh_terms: D007834:Lasers; D008027:Light; D013058:Mass Spectrometry / Q000379:methods*; D008744:Methylamines / Q000032:analysis*; D014466:Ultraviolet Rays
chemical_list: D008744:Methylamines