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Competition between multiphoton fluorescence and multiphoton ionization in NO
Author(s) -
Jackson W. M.,
Lin C. S.
Publication year - 1978
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550100905
Subject(s) - chemistry , ionization , fluorescence , laser , atomic physics , rate equation , dye laser , nitrogen laser , excitation , resonance fluorescence , wavelength , two photon excitation microscopy , limiting , photoionization , resonance enhanced multiphoton ionization , excitation wavelength , optics , ion , kinetics , physics , mechanical engineering , organic chemistry , quantum mechanics , engineering
A nitrogen laser pumped tunable dye laser has been used to observe the three‐photon ionization of NO through a two‐photon resonance with the C 2 II state. Fluorescence is also observed from this state. The wavelength dependence of both signals have been measured. A reaction mechanism is postulated, which includes the initial two‐photon excitation of the C 2 II state as the rate‐limiting step. This mechanism predicts the observed second‐order intensity dependence of the ionization signal and shows that the simple rate equation treatment is valid in this system.