In mass spectrometry, 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.[1][2] The image current from the trapped ions is detected and converted to a mass spectrum by first using the Fourier transform of time domain of the harmonic to create a frequency signal which is converted to mass.
- ^ Makarov A (March 2000). "Electrostatic axially harmonic orbital trapping: a high-performance technique of mass analysis". Analytical Chemistry. 72 (6): 1156–1162. doi:10.1021/ac991131p. PMID 10740853.
- ^ Hu Q, Noll RJ, Li H, Makarov A, Hardman M, Graham Cooks R (April 2005). "The Orbitrap: a new mass spectrometer". Journal of Mass Spectrometry. 40 (4): 430–443. Bibcode:2005JMSp...40..430H. doi:10.1002/jms.856. PMID 15838939.