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In thermal ionization, also referred to as surface ionization, chemically-purified material loaded onto a filament which is then heated to cause some of the material to be ionized as it boils off the hot filament. Filaments are generally flat pieces of metal around 1-2mm wide, 0.1mm thick, bent into an upside-down U shape and welded to steel posts that supply a current.
Additional recommended knowledge
Thermal ionization mass spectrometry
One application of thermal ionization is thermal ionization mass spectrometry (TIMS). The ions being produced at the filament are directed into a mass spectrometer to analyze the elements or isotopes present in the sample.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Thermal_ionization". A list of authors is available in Wikipedia.|