Cyclotron

A cyclotron accelerates charged particles with a high-frequency, alternating voltage (potential difference). A perpendicular magnetic field causes the particles to go almost in a circle. The beam spirals out to the edge of the container, as the particles' speeds increase. At this point, the particles' speed approaches the speed of light.

Related Topics:
Charge - Frequency - Voltage - Magnetic field

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The cyclotron was invented by Ernest Lawrence of the University of California, in 1929. He used it in experiments that required particles with energy of up to 1 MeV. Cyclotrons are used today to treat cancer. The bright, adjustable-frequency x-rays produced by a cyclotron's radiation can be adjusted to penetrate limited distances into the human body, in order to kill tumor cells.

Related Topics:
Ernest Lawrence - University of California - 1929 - MeV - Cancer - X-ray - Radiation

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