ALangmuir–Taylor detector, also called surface ionization detectororhot wire detector, is a kind of ionization detector used in mass spectrometry, developed by John Taylor[1] based on the work of Irving Langmuir and K. H. Kingdon.[2]
This detector usually consists of a heated thin filament or ribbon of a metal with a high work function (typically tungstenorrhenium). Neutral atoms or molecules that strike the filament can boil off as positive ions in a process known as surface ionization, and these may be either measured as a current or detected, individually, using an electron multiplier and particle counting electronics.
This detector is mostly used with alkali atoms, having a low ionization potential, with applications in mass spectrometry and atomic clocks.
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| Mass analyzer |
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| MS combination |
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| Fragmentation |
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