quadrupole noun & adjective. ['kwɒdrʊpǝʊl] E20.
[from QUADRU- + POLE noun².]
Physics.
A. noun.
1. A multipole of order 2; esp. a system of four magnetic or electric monopoles with no net pole strength or charge. E20.

2. An arrangement of four magnetic (or electric) poles, of alternate polarity, directed at one point to focus beams of subatomic particles. M20.
b. attrib. or as adjective. That is a quadrupole; of or pertaining to a quadrupole or quadrupoles. E20.
quadrupole moment the (electric, magnetic) moment associated with a quadrupole, a function of the magnitudes of the charges etc. and the distance between them, and dependent on the configuration of the quadrupole.

■ quadru'polar adjective M20.

[TahlilGaran] English Dictionary ▲