File:Cherenkov.svg

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Summary

DescriptionCherenkov.svg	The geometry of the Cherenkov radiation. In the figure, v is the velocity of the particle (red arrow), β is v/c, n is the refractive index of the medium. The blue arrows shows the direction of the radiation. So: $\cos \theta ={\frac {1}{n\beta }}$ Made by Arpad Horvath (previous versions en:Image:Cherenkov.png and hu:Image:Cserenkov.png) I created it with xfig (Xfig source: http://www.szgti.bmf.hu/harp/gnu/particle-physics/cserenkov.fig ), I saved it to SVG, and modified with Inkscape. English: Please note, this figure shows the ideal case of no dispersion, which means that the refractive index n is independent of the wavelength $\lambda$ . In reality n will depend on $\lambda$ and hence the wave front (governed by group velocity) will no longer be perpendicular to the direction of the radiation (governed by phase velocity). Deutsch: Bitte beachten, dass diese Abbildung nur den idealen Fall ohne Dispersion zeigt, also Brechungsindex n unabhängig von $\lambda$ . In der Realität ist n eine Funktion von $\lambda$ und damit werden die Wellenfront (bestimmt durch die Gruppengeschwindigkeit) und die Ausbreitungsrichtung des Lichts (bestimmt durch die Phasengeschwindigkeit) nicht mehr senkrecht aufeinander stehen.
Date	16 March 2006 (original upload date)
Source	No machine-readable source provided. Own work assumed (based on copyright claims).
Author	Arpad Horvath

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File history

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	Date/Time	Dimensions	User	Comment
current	12:26, 16 March 2006	378 × 351 (19 KB)	Harp	Red arrow
	11:47, 16 March 2006	378 × 351 (19 KB)	Harp	Some small modifications
	11:46, 16 March 2006	378 × 351 (21 KB)	Harp	Some small modifications
	11:44, 16 March 2006	378 × 351 (22 KB)	Harp	Some small modifications
	10:19, 16 March 2006	378 × 351 (23 KB)	Harp	The goometry of en:Cherenkov radiation. Image:Cserenkov.png Made by ~~~ Category:Particle physics