Answer: cyclotrons

AnswerCrossword Clue
CYCLOTRONSAtom-smashing machines.
CYCLOTRONSApparatuses for bombarding atoms.
CYCLOTRONSSpiral-shaped particle accelerators
cyclotronsCYCLOTRON, a type of particle accelerator
cyclotronsAn apparatus in which charged atomic and subatomic particles are accelerated by an alternating electric field while following an outward spiral or circular path in a magnetic field