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

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{{DefName|A [[mass spectrometer]] based on the principle of [[ion cyclotron resonance]]. An ion placed in a magnetic field will move in a circular orbit at a frequency characteristic of its ''[[m/z]]'' value. Ions are excited to a coherent orbit using a pulse of radio frequency energy and their image charge is detected on receiver plates as a time domain signal. 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 ''[[m/z]]'', can be converted to a [[mass spectrum]].}}
{{DefName|A [[mass spectrometer]] based on the principle of [[ion cyclotron resonance]] in which an ion in a magnetic field moves in a circular orbit at a frequency characteristic of its ''[[m/z]]'' value. Ions are excited to a coherent orbit using a pulse of radio frequency energy and their image charge is detected on receiver plates as a time domain signal. Fourier transformation of the time domain signal results in the frequency domain FT-ICR signal which is converted to a [[mass spectrum]] based in the inverse relationship between frequency and ''[[m/z]]''.}}


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


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]].
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 a 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 23:53, 30 December 2005

DRAFT DEFINITION
Fourier transform-ion cyclotron resonance-mass spectrometer
A mass spectrometer based on the principle of ion cyclotron resonance in which an ion in a magnetic field moves in a circular orbit at a frequency characteristic of its m/z value. Ions are excited to a coherent orbit using a pulse of radio frequency energy and their image charge is detected on receiver plates as a time domain signal. Fourier transformation of the time domain signal results in the frequency domain FT-ICR signal which is converted to a mass spectrum based in the inverse relationship between frequency and m/z.
Considered between 2004 and 2006 but not included in the 2006 PAC submission
This is an unofficial draft definition presented for information and comment.

Recommended terms | Full list of terms


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 a 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