Fourier transform-ion cyclotron resonance-mass spectrometer: Difference between revisions

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== [[Orange Book]] Entry ==
== [[Orange Book]] Entry ==


A high-frequency [[mass spectrometer]] in which the [[cyclotron motion]] of ions, having different [[mass/charge ratio]]s, in a constant magnetic field, is excited essentially simultaneously and coherently by a pulse of a radio-frequency electric field applied perpendicularly to the magnetic field. The excited cyclotron motion of the ions is subsequently detected on [[receiver plate]]s as a time domain signal that contains all the [[Cyclotron Frequency|cyclotron frequencies]] excited. Fourier transformation of the time domain signal results in the frequency domain FT-ICR signal which, on the basis of the inverse proportionality between frequency and mass/charge ratio, can be converted to a [[mass spectrum]]. See also [[ion cyclotron resonance (ICR) mass spectrometer]].
A high-frequency [[mass spectrometer]] in which the [[Cyclotron Motion|cyclotron motion]] of ions, having different [[mass/charge ratio]]s, in a constant magnetic field, is excited essentially simultaneously and coherently by a pulse of a radio-frequency electric field applied perpendicularly to the magnetic field. The excited cyclotron motion of the ions is subsequently detected on [[Receiver Plate|receiver plate]]s as a time domain signal that contains all the [[Cyclotron Frequency|cyclotron frequencies]] excited. Fourier transformation of the time domain signal results in the frequency domain FT-ICR signal which, on the basis of the inverse proportionality between frequency and mass/charge ratio, can be converted to a [[mass spectrum]]. See also [[ICR|ion cyclotron resonance (ICR) mass spectrometer]].


== External Links ==
== External Links ==

Revision as of 13:42, 22 January 2005

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Orange Book Entry

A high-frequency mass spectrometer in which the cyclotron motion of ions, having different mass/charge ratios, in a constant magnetic field, is excited essentially simultaneously and coherently by a pulse of a radio-frequency electric field applied perpendicularly to the magnetic field. The excited cyclotron motion of the ions is subsequently detected on receiver plates as a time domain signal that contains all the cyclotron frequencies excited. Fourier transformation of the time domain signal results in the frequency domain FT-ICR signal which, on the basis of the inverse proportionality between frequency and mass/charge ratio, can be converted to a mass spectrum. See also ion cyclotron resonance (ICR) mass spectrometer.

External Links

Principles of Fourier transform ion cyclotron resonance mass spectrometry and its application in structural biology