Coordinatori
S2.3 Channeling & Radiations in Various Fields
- Gianluca Cavoto (ROMA1)
Prof.
Sergey Maksimenko
(Institute for Nuclear Problems, Belarusian State University)
25/09/18, 09:00
Oral presentation
We demonstrate that surface plasmon-polariton waves with low phase velocity in carbon nanostructures can be utilized for the generation of coherent terahertz radiation through the Cherenkov mechanism, the effect being expected to be observable in carbon nanotubes and being especially pronounced in spatially expanded double- and multi-layer graphene structures owing to the suppression of the...
Dr.
Sergey Uglov
(Tomsk Polytechnic University)
25/09/18, 09:30
Oral presentation
Recently [1] we have reported about the observation of the Cherenkov effect on the L-edge of the absorption of the aluminium. In the present report new results are provided in experimental study of the X-ray Cherenkov effect with photons energy about hundred eV. Using an electron beam with energy of 5.7 MeV, we observed the Cherenkov effect on Si and Be target with a photon energy of about...
Prof.
Andrey Tyukhtin
(Saint Petersburg State University)
25/09/18, 09:45
Oral presentation
We analyze radiation of charges moving in presence of some dielectric targets. The first of them is a cone with vacuum channel where the charge moves. The second is a prism (the charge moves along one of its borders). We use the “aperture method” developed in our previous works. Here the main attention is given to the far-field area. Analytical and numerical results are shown and main physical...
Dr.
Sergey Galyamin
(Saint Petersburg State University)
25/09/18, 10:00
Oral presentation
In the X-ray frequency region, interaction of relativistic electrons with crystals results in parametric X-ray radiation (PXR), with its frequency being determined by distance between crystallographic planes and direction of electron motion.
If instead of crystal one considers an artificial periodic structure with periods of the order of mm, one can expect emission of radiation of a similar...
Prof.
Aram Saharian
(Yerevan State University, Yerevan, Armenia)
25/09/18, 10:15
Oral presentation
The radiation from a charged particle uniformly rotating around an infinitely long cylinder made of composite material is investigated. For the dielectric function of the cylinder we use the generalized Drude-Lorentz-Sommerfeld formula. The study is based on the exact solutions of the Maxwell equations. The dispersion of electromagnetic waves inside a cylinder is taken into account. It is...
Prof.
Vladislav Syshchenko
(Belgorod State University)
25/09/18, 10:30
Oral presentation
The description of diffraction and transition radiation (DR and TR) on a metal sphere based on the method of images known in electrostatics (see, e.g., [1]) has been developed in [2]. In the method of images the boundary conditions for the field of the incident particle on the perfect conductor surface are satisfied via introduction of one or more fictitious charges (the “images” of the real...
Prof.
Alpik Mkrtchyan
(Institute of Applied Problems of Physics NAS RA)
25/09/18, 10:45
Oral presentation
The radiation generated by a rectilinearly and uniformly moving train of fine bunches of charged particles is investigated. It is assumed that the particles cross a ball made of conductive, dielectric or composite material passing through its center. The obtained numerical results are based on the corresponding exact analytical solutions of Maxwell equations [1,2].
It is shown that there...
