noun, Physics.
an accelerator in which particles are propelled in straight paths by the use of alternating electric voltages that are timed in such a way that the particles receive increasing increments of energy.
an accelerator in which charged particles are accelerated along a linear path by potential differences applied to a number of electrodes along their path Sometimes shortened to linac

linear accelerator n.

linear accelerator
A type of particle accelerator that accelerates charged subatomic particles, such as protons and electrons, in a straight line by means of alternating negative and positive impulses from electric fields. Linear accelerators were largely supplanted by cyclotrons and other architectures that require less path length to achieve the same or higher particle velocities. See Note at particle accelerator.


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