Conveners
S2.1 Channeling & Radiations in Various Fields
- Pavel Karataev (Royal Holloway, Unviersity of London)
Mr
Xavier Artru
(Institut de Physique Nucléaire de Lyon)
24/09/2018, 14:30
Oral presentation
Particles travelling in aligned crystals at small angle w.r.t. crystallographic axes or planes are essentially steered by the continuous Lindhard potential. This interaction conserves the energy E, the parallel momentum p_||, the transverse energy of the particle E_T and is elastic concerning the crystal wave function. At high enough energy the resulting transverse motion can be described by...
Dr
Eugene Bulyak
(NSC KIPT)
24/09/2018, 15:00
Oral presentation
We report the statistical consideration of the radiating electrons. At the statistical stage, the spectrum of radiating electrons moves toward a stable distribution. The stability parameter gradually increases when the average number of recoils increase, from unity (the Landau distribution) asymptotically approaching two (the Gaussian distribution). A concrete dependence of the stability...
Dr
Anatoly Konkov
(Tomsk Polytechnic University)
24/09/2018, 15:15
Oral presentation
Dynamic polarization is a complex process of the rapid interchange of energy between the alternating electromagnetic fields and medium's atoms/molecules. In result of this process a part of the electromagnetic field free energy is expended in the moving of “free” electrons (the conduction current) and displacement of the latent electricity (the displacement current). The first component of the...
Ms
Anastasiia Feshchenko
(NRNU MEPhI)
24/09/2018, 15:30
Oral presentation
The brightest sources of X-ray radiation are known to be realized on the basis of radiation from the beams of charged particles. Depending on the required range of the X-ray part of the spectrum, various radiation generation schemes are used. For example, synchrotron radiation exhibits extremely high spectral brightness in a wide frequency range. The absolute leaders in vacuum UV and soft...
Dr
Gennady Naumenko
(Tomsk Polytechnic University)
24/09/2018, 15:45
Oral presentation
For usual (bipolar) radiation the integral of the electric field strength over the time is zero. First time the possibility of unipolar radiation (strange electromagnetic waves) generation has been considered theoretically in 1990 [1]. According to this work the unipolar radiation is radiation for which the integral of the electric field strength over the time differs significantly from zero....
Prof.
Lekdar Gevorgian
(A)
24/09/2018, 16:00
Oral presentation
The possibility of generating coherent THz radiation from an electron bunch with a weak asymmetry in the distribution as a result of grouping of electrons is considered. It is shown that the partially coherent THz radiation is generated in a wiggler from such electron bunch with energy of 50 MeV.
Dr
Alexander Kubankin
(Belgorod National Research University),
Esteban Irribarra
(Escuela Politécnica Nacional, Quito, Ecuador), Mr
Ivan Kishin
(Belgorod National Research University), Mr
Ramazan Nazhmudinov
(Belgorod National Research University)
24/09/2018, 16:15
Oral presentation
Parametric X-ray Radiation (PXR) from a tungsten powder was registered during the interaction of the target with a 7 MeV electron beam. The tungsten powder presents a purity of 99,987 % and is constituted of crystallites which average size is between 0.8 and 1.7 µm. The radiation was registered by silicon drift detectors under observation angles of 150˚ and 180˚ regarding the velocity of the...
