К УСЛОВИЯМ ВОЗНИКНОВЕНИЯ ИЗЛУЧЕНИЯ ВАВИЛОВА-ЧЕРЕНКОВА И ПЕРЕХОДНОГО ИЗЛУЧЕНИЯ

Abstract

Attention is drawn to the connection between the virtual parameters and the physical effects produced during the rapid motion of a charged particle in a mass medium. In particular, the virtual position of a particle and its virtual velocity as a function of the real velocity of the particle and the position of the observer are investigated. On the basis of such a study it was possible to formulate a new method for the interpretation of the basic properties of Vavilov-Čerenkov and transient radiation. This method can be used in a simple manner to determine the conditions for the occurrence and the directional characteristics of Vavilov-Čerenkov radiation in both a homogeneous and an inhomogeneous medium. A study of the virtual parameters of a particle on the interface between two optics of different media leads to the assumption of the existence of two kinds of transient radiation.