Study on a Ion Optic System for Glow Discharge Time of Flight Mass Spectrometer

A modified ion optic system has been developed and used to a orthoranal glow discharge time of flight mass spectrometer (GD -TOFMS). The performance of the ionic optics, including the effects of different potential of extracting cone, len8, DCquadrupo1es and slit on the intensity and resolution of spectra, was investegated. The spectra of brass sample were also studied. It has been shown that the ion optics can not only increase the ion translated efficiency,but aIso improve the resolving power and vacuum of the mass spectrometer.