Experimental Research of the Diffraction and Vavilov-Cherenkov Radiation Generation in a Teflon Target

TL;DR

This study investigates the generation of diffraction and Vavilov-Cherenkov radiation in a Teflon target, revealing unexpected results that prompt a reevaluation of their underlying physical nature.

Contribution

It presents experimental observations of both diffraction and Vavilov-Cherenkov radiation from a dielectric target, challenging existing understanding of their generation mechanisms.

Findings

Observation of VChR and diffraction radiation from Teflon target

Unexpected results suggest reflection on the nature of both radiation types

Experimental data obtained using relativistic electron beam

Abstract

Geometry of Vavilov-Cherekov (VChR) radiation when an electron moves close to a dielectric target is in analogy to diffraction radiation (DR) geometry. In this case we may expect DR generation from the upstream face of the target besides that VChR. The joint observation of these booth types of radiation is very interesting from the pseudo-photon viewpoint, which is applicable for relativistic electrons. Unexpected results obtained in our experiment insist on reflection about nature both DR and VChR. The experiment was performed on the relativistic electron beam of the microtron of Tomsk Polytechnic University.