THE EFFECT OF COLLISION ENERGY AND NATURE OF THE SURFACE ON THE SURFACE-INDUCED DISSOCIATION MASS-SPECTRA OF FLUOROBENZENE USING A 4-SECTOR MASS-SPECTROMETER

The effects on the surface-induced mass spectrum of fluorobenzene, recorded using a four-sector mass spectrometer, of changing the collision energy and the nature of the surface are reported. At higher collision energies, although the overall ion current is reduced, the relative abundance of product ions is increased, particularly those of low m/z. The use of a rough surface, such as a film of PTFE, increases the abundance of low mass fragment ions for a given translational energy, especially at higher collision energies.