Publication

Broad-band two-dimensional Fourier transform ion cyclotron resonance

Geoffrey Bodenhausen
1988
Journal Articles

Abstract

Two-dimensional (2D) Fourier transform ion cyclotron resonance (2D FT-ICR) allows one to obtain direct evidence for the occurrence of ion-mol. reactions. In 2D FT-ICR spectra, one observes resonances with 2 distinct frequency coordinates w1 and w2 that correspond to the mass-to-charge ratios of the ions that participate as reactants and products, resp. It is possible to monitor a manifold of distinct reactions in one single 2D spectrum. Spectral ranges of the order of several MHz can be covered by using frequency-swept ("chirped") radio-frequency pulses. [on SciFinder (R)]

Official source

https://infoscience.epfl.ch/entities/publication/03caff71-0127-406c-8c8c-b4318eda8ab3

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Geoffrey Bodenhausen
1988
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/03caff71-0127-406c-8c8c-b4318eda8ab3

About this result

Related concepts (32)

Tandem mass spectrometry

Tandem mass spectrometry, also known as MS/MS or MS2, is a technique in instrumental analysis where two or more mass analyzers are coupled together using an additional reaction step to increase their abilities to analyse chemical samples. A common use of tandem MS is the analysis of biomolecules, such as proteins and peptides. The molecules of a given sample are ionized and the first spectrometer (designated MS1) separates these ions by their mass-to-charge ratio (often given as m/z or m/Q).

Fourier-transform ion cyclotron resonance

Fourier-transform ion cyclotron resonance mass spectrometry is a type of mass analyzer (or mass spectrometer) for determining the mass-to-charge ratio (m/z) of ions based on the cyclotron frequency of the ions in a fixed magnetic field. The ions are trapped in a Penning trap (a magnetic field with electric trapping plates), where they are excited (at their resonant cyclotron frequencies) to a larger cyclotron radius by an oscillating electric field orthogonal to the magnetic field.

Mass-to-charge ratio

The mass-to-charge ratio (m/Q) is a physical quantity relating the mass (quantity of matter) and the electric charge of a given particle, expressed in units of kilograms per coulomb (kg/C). It is most widely used in the electrodynamics of charged particles, e.g. in electron optics and ion optics. It appears in the scientific fields of electron microscopy, cathode ray tubes, accelerator physics, nuclear physics, Auger electron spectroscopy, cosmology and mass spectrometry.

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Broad-band two-dimensional Fourier transform ion cyclotron resonance

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