Introduction of Mass Spectrometer Filament

Mass Spectrometer Filament

INNOVACERA is glad to offer new standard filament assemblies, a critical component in mass spectrometry applications for the analytical and medical industries.

Principle of mass spectrometer filament

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.

These filament supports are manufactured using 96% alumina, selected for its good electrical insulation and high temperature stability. Customers can choose between two and four-pin options, with the pins brazed into the alumina insulator ready for filament welding. Our brazing process makes the filament considerably more resistant to higher temperatures, around 700°C compared with standard adhesives, which can only typically withstand up to 350°C