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A novel ionisation source which uses commercially available Carbon Nano Tube devices is demonstrated as a replacement for a filament based ionisation source in an ion trap mass spectrometer. The carbon nanotube ion source electron emission was characterised and exhibited typical emission of 30±1.7μA with an applied voltage differential of 300V between the carbon nanotube tips and the extraction grid...
A miniaturized mass spectrometer with field emission electron source is proposed and its operation is theoretically analyzed. The mass spectrometer has overall dimensions in the centimeter range, making it portable and suitable for integration in new systems. The electrons are obtained from a linear array of gated cathode emitters placed on a cylinder parallel with its symmetry axis. The ions are...
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