Definition of quadrupole in English:

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Pronunciation: /ˈkwädrəˌpōl/


1A distribution of electric charge or magnetization consisting of four equal monopoles, or two equal dipoles, arranged close together with alternating polarity and operating as a unit.
Example sentences
  • Lowering the temperature appears to substantially shorten the quadrupole echo decay time of the prominent doublet component.
  • The deuterium quadrupole echo spectra of the two samples are presented in Fig.7.
  • The two populations differ in their averaged quadrupole splitting and in their 2 H chemical shift values.
1.1A device using a quadrupole directed at one point to focus beams of subatomic particles.
Example sentences
  • In Q-Tof mass spectrometers ions are focused by a radio frequency lens before transmission to the quadrupole.
  • We have used a microfabricated planar quadrupole as a test bed for evaluating DEP-based traps, using polystyrene beads as a model for cells.
  • The plot in Fig.2 has a striking qualitative similarity to the observed NMR quadrupole splittings.
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