particle-beam

particle beam

noun
1.
Physics. a concentrated stream of particles, as electrons, neutrons, or protons, generated for studying particle interactions, nuclear structure, crystal structure, etc.
2.
Military. a high-energy stream of such particles for use as a weapon or for antimissile defense.
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World English Dictionary
particle beam
 
n
1.  a stream of energized particles produced by a particle accelerator
2.  such a stream emitted by a particle beam weapon

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