Transition radiation of electrons with orbital angular momentum
A. S. Konkov, A. P. Potylitsyn, M. S. Polonskaya
Tomsk Polytechnic University, 634050 Tomsk, Russia
Abstract
Several experimental groups have recently obtained the so-called
vortex electrons (electrons with orbital angular momentum (OAM) of
) with energies of keV.
The angular momentum of such
electrons becomes proportional to the OAM value, which leads to the
corresponding increase of the electron magnetic moment. In this paper, we
investigate the transition radiation from the "charge + magnetic moment"
system by means of the classical electrodynamics theory. The circular
polarization of optical transition radiation reaches its maximum level to
of the electron orbital momentum value.