Speaker
Anastasiya Feshchenko
(NRNU MEPhI)
Description
A charged particle moving uniformly near a medium surface is known to be a source of so-called diffraction radiation, if there is a longitudinal (along the velocity vector) momentum transfer from the particle to the medium, so the conservation laws allow the photon emission. Thus, at uniform charge motion, parallel to the surface of the homogeneous isotropic medium, no diffraction radiation arises.
In this work we propose a technic of radiation generation, using nonlinear interaction of a plane electromagnetic wave with the medium, e.g., wave associated with laser field. Strong monochromatic field, which is comparable with intra-atomic field, changes a space-time distribution of the bound charges of the medium, which cannot be considered homogeneous any more. Therefore the scattering of the particles Coulomb field on the periodically inhomogeneous structure formed by the field of the external electromagnetic wave leads to an emergence of Smith-Purcell radiation. We study the dependence of the radiation characteristics on parameters describing the plane wave and the charged particles. The scheme proposed is a mixture of two different non-invasive bunch diagnostics schemes: electro-optic method [1] and based on Smith-Purcell radiation one [2].
1. G. Berden et al, PRL 99, 164801 (2007).
2. A.P. Potylitsyn et al, Diffraction Radiation from Relativistic Particles, Springer, 2011.
Author
Anastasiya Feshchenko
(NRNU MEPhI)
Co-authors
Alexey Tishchenko
(National Research Nuclear University (MEPhI))
Prof.
Mikhail Strikhanov
(National Research Nuclear University “MEPhI”, Moscow, Russia)
