technical ceramic solutions

Mass Spectrometer Filaments

Mass spectrometer filament is also called ion source filament or cathode filament. It is mainly made of high melting point metals such as tungsten (W) alloy or molybdenum alloy. Its function is similar to that of ordinary filaments. It mainly produces electron emission under high pressure and excites gaseous molecules into ions, thereby generating the charge-to-mass ratio signal required for mass spectrometry.

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