Cherenkov radiation
Also known as: Čerenkov radiation · Vavilov–Cherenkov radiation
- 1Cherenkov radiation occurs when particles exceed the phase velocity of light in a medium.
- 2It is characterized by a distinct blue glow.
- 3The mechanism is physically similar to a sonic boom.
- 4The phenomenon is named after the Soviet physicist Pavel Cherenkov.
Cherenkov radiation is an electromagnetic radiation emitted when a charged particle passes through a dielectric medium at a speed greater than the phase velocity of light in that medium.
Connections1
experimental detection method for neutrinos
Pontecorvo proposed using the detection of Cherenkov radiation in large water tanks as a practical method to observe neutrinos, a technique now used in major observatories.
Cherenkov radiation is a form of electromagnetic radiation that occurs when a charged particle travels through a dielectric medium at a speed exceeding the phase velocity of light within that same medium. This phenomenon is often visually identified by a distinct blue glow, commonly observed in the water surrounding nuclear reactor cores.
Animation of arise Cherenkov's radiation. From the left fly a particle, which polarizes atoms and molecules in surroundings her track. By backward depolarization these atoms and molecules emanate electromagnetic radiation, which from places rise expansive in spherical wave surface. Cover of these wave surface generate...Wikimedia Commons; H. Seldon; vlastni dilo, own work; Public domain; Wikimedia Commons: Category:Cherenkov radiationCherenkov radiation glowing in the core of the Advanced Test Reactor at Idaho National LaboratoryWikimedia Commons; Argonne National Laboratory; originally posted to Flickr as Advanced Test Reactor core, Idaho National Laboratory Uploaded using F2ComButton; CC BY-SA 2.0; Wikimedia Commons; Wikidata P18 (image)NRC picture of Cerenkov radiation surrounding the underwater core of the Reed Research Reactor , Reed College , Oregon, USA.Wikimedia Commons; United States Nuclear Regulatory Commission; http://www.nrc.gov/images/reading-rm/photo-gallery/20071115-067.jpg; Public domain; Wikimedia Commons; Wikidata P18 (image) The physical mechanism behind this radiation is analogous to a sonic boom, which occurs when an object moves faster than the speed of sound. In the case of Cherenkov radiation, the particle creates a shockwave of light as it outpaces the speed of light in the medium. The effect is named after the Soviet physicist Pavel Cherenkov, who conducted significant research into this optical phenomenon.