Abstract
The effect of radiation on the multiphoton ionization/dissociation of furan was studied at wavelengths of 532 nm and 355 nm. The relative abundance of the ions that were produced is presented for each wavelength; it was observed that the ion C2H2+ (m/z = 26) was the most abundant at 532 nm, while the parent ion C4H4O+ (m/z = 68) was the most abundant at 355 nm. These results differ from those of previous studies that used different ionization methods. The fragmentation mechanisms found in this study suggest that isomerization of the molecule occurs while it breaks down into smaller fragments, in which the migrations of H are included. In addition, an effect on the kinetic energy of the produced ions related to the intensity of radiation was observed, which seemed to indicate a type of multiphoton resonance.
Published Version
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