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 …

Electric Quadrupole

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

…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 principle of an electric quadrupole involves a system of charges or the electric field’s distribution which forms a unique arrangement. This arrangement consists of two pairs …

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 …

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

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 …

Quadrupole is a type of mass analyzer with the best performance except for magnetic analyzer. It has many advantages such as small size, light weight, low cost and mature technology.

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.