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⚡ Four-charge effect 🔬 A scientific device
quadrupole

quadrupole

1 9.9
An arrangement of four electric charges or magnetic poles with alternating polarity that affects the field
  • noun
  • /ˈkwɒdrəˌpoʊl/
  • Specialized
: cuadrupolo
  • In particle accelerators, quadrupole magnets are used to focus the beam of charged particles.
  • electric quadrupole
  • quadrupole moment
  • quadrupole contribution

If there's no dipole, well, the dipole, the dipole, the quadrupole, the optical and the next should be random when they're right.

Examples

  • These precise measurements yielded the novel determination of the small electric-quadrupole contributions to the excitation of the d(1232) resonance discussed above.

    Academic text (2005)

  • In addition, we determined that the deuteron has a quadrupole moment, which in turn implied the existence of a new nuclear force, the tensor force.

    Academic text (1993)

  • This is called the quadrupole moment of the source.

  • There are three times of a quadrupole moment leading to this formula.

  • The double-armed spiral pattern reflects waves from a rotating quadrupole source.

    Academic text (1999)

  • Having completed his PhD thesis in 1950 on atomic-beam measurements of nuclear quadrupole moments, Perl followed Rabi's advice and went into high-energy physics.

    Academic text (1995)

  • Magnets along the side produce a cylindrical quadrupole field that confines atoms radially, and two solenoids at either end trap them axially.

    Academic text (1998)

  • There he interpreted nuclear quadrupoles by modeling nuclei as aggregates of alpha particles, as Teller and John Wheeler did at about the same time.

    Academic text (2001)

  • The experiment measured the quadrupole moment of the nucleus to understand its structure.

  • Researchers analyzed the quadrupole fields produced by the configuration of four charged particles.

Surface Forms

quadrupole singular
quadrupoles plural

Morphology

quadrupole = pole (semi-transparent) = quadru + pole

The prefix 'quadru-' indicates four, and 'pole' refers to poles, but the specific scientific application may not be immediately clear.

Etymology

Quadrupole comes from quadru- 'four' and pole 'a point or end, like a magnet's pole'. In physics this name fits an arrangement of four charges or poles, so the word reminds you that a quadrupole produces a field shaped by 'four poles'.