Orbitrap
![Ion trajectories in an Orbitrap mass spectrometer.](/Images/godic/202501/31/Orbitrappe2323.png")
![Cross-section of the C-trap and Orbitrap analyzer (ion optics and differential pumping not shown). Ion packet enters the analyzer during the voltage ramp and form rings that induce current detected by the amplifier. Reprinted with permission of Thermo Fisher Scientific, CCL2012](/Images/godic/202501/31/OrbitrapMA&Injector2323.png")
![Cut-outs of a standard (top) and a high-field (bottom) Orbitrap analyzer. Reprinted with permission of Thermo Fisher Scientific, CCL2012.](/Images/godic/202501/31/Orbitrap_Mass_Analyzers2323.jpg")
![Representative of LTQ Orbitrap family of Orbitrap mass spectrometers.](/Images/godic/202501/31/ThermoScientificOrbitrapElite2323.JPG")
An orbitrap is an ion trap mass analyzer consisting of an outer barrel-like electrode and a coaxial inner spindle-like electrode that traps ions in an orbital motion around the spindle. The image current from the trapped ions is detected and converted to a mass spectrum using the Fourier transform of the frequency signal.