The orbital motion of ions in the radial plane is composed of two modes at frequencies which are called the magnetron ω − {\displaystyle \omega _{-}} and the modified cyclotron ω + {\displaystyle \omega _{+}} frequencies.
Orbitalno kretanje jona u radijalnoj ravni se sastoji iz dva moda na frekvencijama koje su nazvane magnetronska ω − {\displaystyle \omega _{-}} i modifikovana ciklotronska ω + {\displaystyle \omega _{+}} frekvencija.