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Mass Analysis in Fourier Transform Ion Cyclotron Resonance Instruments

6 Mass Analysis in Fourier Transform Ion Cyclotron Resonance Instruments [Pg.97]

A Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR-MS) can be considered as an ion trap system, where the ions are trapped in the magnetic field rather than in a quadrapole electric field. The ICR cell is a cubic or cylindrical cell positioned in a strong magnetic field B (up to 15 T). The cell consists of two opposite trapping plates, two opposite excitation plates, and two opposite receiver plates (Fig. 4.6). Extreme high vacuum should be achieved in the cell, e.g., 10 mbar. [Pg.97]

An ion of mass m, with velocity v, and z elementary charges describes a circle of radins r, perpendicular to and around the magnetic field lines. The resulting cyclotron frequency m can be written as  [Pg.99]




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Cyclotron

Cyclotron mass

Cyclotron resonance

Fourier analysis

Fourier instrumentation

Fourier transform analysis

Fourier transform instrument

Fourier transform ion cyclotron

Fourier transform ion cyclotron mass

Fourier transformation analysis

Fourier-transform ion cyclotron resonance

Fourier-transform ion cyclotron resonance instruments

In transformations

Instrumental analysis

Ion analysis

Ion cyclotron

Ion cyclotron resonance

Ion cyclotron resonance mass

Ion cyclotron resonance, Fourier

Ion transformations

Resonance analysis

Resonant ion

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