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Cherenkov radiation

Cherenkov radiation glowing in the core of the Advanced Test Reactor at Idaho National Laboratory

Cherenkov radiation (/əˈrɛŋkɒf/[1]) is electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium (such as distilled water) at a speed greater than the phase velocity (speed of propagation of a wavefront in a medium) of light in that medium.[2] A classic example of Cherenkov radiation is the characteristic blue glow of an underwater nuclear reactor. Its cause is similar to the cause of a sonic boom, the sharp sound heard when faster-than-sound movement occurs. The phenomenon is named after Soviet physicist Pavel Cherenkov.

  1. ^ "Cherenkov". Dictionary.com Unabridged (Online). n.d. Retrieved 26 May 2020.
  2. ^ Jackson, John David (1999). Classical electrodynamics (3rd ed.). New York: Wiley. pp. 637–638. ISBN 0-471-30932-X.

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