omegatron
/ˈəʊmɪɡətrɒn/Physics
noun
A mass spectrometer that employs the principle of the cyclotron to identify and measure gases at very low pressures.
- A radio-frequency electric field is applied at right angles to a magnetic field so that charged particles having a certain charge-to-mass ratio impinge on a collecting electrode..
Origin
1940s. From omega + -tron, ω being the symbol of angular frequency.