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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2020 Volume 111, Issue 5, Pages 295–299 (Mi jetpl6119)

This article is cited in 2 papers

FIELDS, PARTICLES, AND NUCLEI

Quasi-Cherenkov mechanism of radiation from relativistic electrons flying near a multilayer prism target

G. A. Naumenko, A. P. Potylitsyn, M. V. Shevelev, D. A. Shkitov, K. E. Popov, A. V. Vukolov

Tomsk Polytechnic University, Tomsk, 634050 Russia

Abstract: The angular characteristics of millimeter radiation generated by a 6.1-MeV electron beam flying near a multilayer prism target consisting of conducting plates separated by vacuum gaps and near a homogeneous Teflon prism have been studied experimentally. The angular distributions of radiation from both targets have been compared. It has been shown that the angular distribution for the Teflon prism is in good agreement with the classical theory of Cherenkov radiation, whereas the evolution of angular distributions for the multilayer target is inconsistent with known expressions with a fixed effective refractive index. Radiation from the multilayer target (quasi-Cherenkov radiation) should assumingly be described by a tensor refractive index.

Received: 31.12.2019
Revised: 11.02.2020
Accepted: 12.02.2020

DOI: 10.31857/S0370274X20050021


 English version:
Journal of Experimental and Theoretical Physics Letters, 2020, 111:5, 255–259

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© Steklov Math. Inst. of RAS, 2024