betatron

noun Physics.

1. an accelerator in which electrons are accelerated to high energies by an electric field produced by a changing magnetic field.

noun

1. a type of particle accelerator for producing high-energy beams of electrons, having an alternating magnetic field to keep the electrons in a circular orbit of fixed radius and accelerate them by magnetic induction. It produces energies of up to about 300 MeV

n.

1. A magnetic induction device capable of accelerating electrons to energies of several hundred million electron volts.

1. A type of particle accelerator that uses changing magnetic fields to accelerate electrons. Energies of several hundred million electron volts can be achieved in a betatron. See also particle accelerator.