A quadrupole or quadrapole is one of a sequence of configurations of things like electric charge or current, magnetic fields, or gravitational mass that can exist in ideal form, but it is usually just …

The quadrupole field continues to alternate as the ions travel through the mass analyzer. This causes the ions to undergo a complex set of motions that produces a three-dimensional wave.

May 15, 2025 · Quadrupole Moment and Potential by Dr. Colton, Physics 441 (last updated: 15 May 2025)

The meaning of QUADRUPOLE is a system composed of two dipoles of equal but oppositely directed moment.

The quadrupole moment is a measure of the deviation of an object's charge distribution from spherical symmetry. It is a higher-order multipole moment that describes the degree to which …

Electric Quadrupole

…of focusing magnet is a quadrupole, a magnet built with four poles (two norths and two souths) arranged opposite each other. This arrangement pushes particles toward the centre in one …

May 27, 2024 · The concept of an electric quadrupole, with its unique charge distribution and complex field patterns, offers a fascinating glimpse into the intricate nature of electromagnetism.

The system possesses what is known as a quadrupole moment. While a single charge is a scalar quantity, and a dipole moment is a vector quantity, the quadrupole moment is a second order …

Some of the confusion over factors of two, and "primitive" versus "traceless" comes from this use of the quadrupole moment as a coefficient in different expansions describing different properties.