An Etymological Dictionary of Astronomy and Astrophysics

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quadrupole lens

عدسی ِ چهارقطبه

adasi-ye cahârqotbé

Fr.: lentille quadrupôle

A device, consisting of four → electrodes or → magnetic poles arranged in alternating → polarity, that focuses a beam of → charged particles.

See also: → quadrupole; → lens.