Orbitrap: Difference between revisions
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{{def| | {{def| | ||
|def=An [[ion trap]] [[mass spectrometer]] that consists of an outer barrel-like electrode and a coaxial inner spindle-like electrode that form an electrostatic field with quadro-logarithmic potential distribution. The frequency of harmonic oscillations of the orbitally trapped ions along the axis of the electrostatic field is independent of the ion velocity and is inversely proportional to the square root of [[m/z]] so that the trap can be operated as a mass analyzer using [[image current detection]] and Fourier transformation of the time domain signal. | |def=An [[ion trap]] [[mass spectrometer]] that consists of an outer barrel-like electrode and a coaxial inner spindle-like electrode that form an electrostatic field with quadro-logarithmic potential distribution. The frequency of harmonic oscillations of the orbitally trapped ions along the axis of the electrostatic field is independent of the ion velocity and is inversely proportional to the square root of [[m/z]] so that the trap can be operated as a mass analyzer using [[image current detection]] and Fourier transformation of the time domain signal. | ||
|ref= | |||
{{psims|1000484}} | |||
}} | }} | ||
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==Gallery== | |||
{{Gallery | |||
|file=File:Orbitrap Mass Analyzers.jpg|caption=Orbitrap mass analyzers}} | |||
{{Gallery | |||
|file=File:OrbitrapMA&Injector.png|caption=Ion injection into an Orbitrap mass analyzer, showing the rf injector ion trap and the Orbitrap electrostatic ion trap.}} | |||
[[category:commercial term]] | |||
[[Category:Mass spectrometer type]] | |||
Latest revision as of 11:04, 6 August 2025
| DRAFT DEFINITION |
| Orbitrap |
|---|
| An ion trap mass spectrometer that consists of an outer barrel-like electrode and a coaxial inner spindle-like electrode that form an electrostatic field with quadro-logarithmic potential distribution. The frequency of harmonic oscillations of the orbitally trapped ions along the axis of the electrostatic field is independent of the ion velocity and is inversely proportional to the square root of m/z so that the trap can be operated as a mass analyzer using image current detection and Fourier transformation of the time domain signal. |
| Related Term(s): |
| Reference(s):
PSI-MS: MS:1000484 |
| This is an unofficial draft definition presented for information and comment. |
Gallery
