The spectrum of cherenkovs optical radiation generated by an anisotropic group of electrons. A low cost cherenkov imaging system for tev gammaray astronomy. In this work we analyse the cherenkov effect for nonrotating extended charges. Cherenkov radiation, also known as vavilovcherenkov radiation, also spelled cerenkov is electromagnetic radiation emitted when a charged particle such as an electron passes through a dielectric medium at a speed greater than the phase velocity of light in that medium. We obtain the energy radiated per unit path length per unit frequency by the charge facing the cherenkov effect as a radiation reaction problem. Hence, observed angles of incidence can be used to compute the direction and speed of a cherenkov radiationproducing charge. Please note, this figure shows the ideal case of no dispersion, which means that the refractive index n is independent of the wavelength.
Pdf a low cost cherenkov imaging system for tev gammaray. The charged particles polarize the molecules of that medium, which then turn back rapidly to their ground state. This file is licensed under the creative commons attributionshare alike 2. In reality n will depend on and hence the wave front governed by group velocity will no longer be perpendicular to the direction of the radiation governed by phase velocity. Pdf a low cost cherenkov imaging system for tev gamma.
The phenomenon was discovered by the soviet physicist pavel a. The cherenkov angle is zero at the threshold velocity for the emission of cherenkov radiation. The cherenkov effect for nonrotating extended charges. Radiaciones electromagneticas by prezi user on prezi. Radiaciones electromagneticas hospital centro oriente ingeniera ambiental sandra m. The underlying idea is to consider that the power radiated by the charge is equal to the work done by the radiation reaction force. The angle takes on a maximum as the particle speed approaches the speed of light. You may do so in any reasonable manner, but not in.
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