Coordinatori
S2: Channeling & Radiations in Various Fields
- Anand Pathak (University of Hyderabad)
Descrizione
Session 2.1
Prof.
Nikolai Shul'ga
(Akhiezer Institute for Theoretical Physics of NSC KIPT)
06/10/14, 14:30
Invited talk
In the present report a short review is given of last results on electromagnetic processes at high energies with “half-bare” particles such as transition radiation, Bremsstrahlung in a structured target, coherent radiation in ultrarelativistic crystals, ionization energy losses in a thin layer of matter, process of high energy electron-positron pairs production, etc. Considered are also some...
Sig.
Valeriy Katkov
(BINP)
06/10/14, 15:00
Oral
An effective mass of photon in a strong magnetic field of the same order or more than the Schwinger critical field is investigated. Obtained expressions include the singular terms with the root divergence at the thresholds of electron and positron creation on Landau levels. In high-energy range, when the number of thresholds is large, the quasiclassical approach is used. In this region the...
Dr.
Micola Bondarenco
(Kharkov Institute of Physics and Technology)
06/10/14, 15:15
Oral
Multiphoton spectra for channeling radiation are calculated based on techniques developed in [1], with the addition of averaging over charged particle impact parameters posterior to the calculation of the radiation straggling. Cases of planar and axial channeling in harmonic wells are considered, for which high photon multiplicity approximations for channeling radiation spectra are derived....
Dr.
Alexey Tishchenko
(National Research Nuclear University "MEPhI")
06/10/14, 15:30
Oral
Left-handed metamaterials are known to demonstrate unusual optical properties, like negative refractive index, inverse Doppler effect, backward waves (the waves with contrary directed phase and group velocities), focusing beyond the diffraction limit. On the other hand, polarization radiation of charged particles has much in common with the processes of scattering of light in matter....
Prof.
Vladimir Vysotskii
(Kiev National Shevchenko Univ, Kiev, Ukraine)
06/10/14, 15:45
Oral
The influence of the spatial distribution of electrons, atoms and nuclei in condensed media on medium’s susceptibility and on the conditions of both X-ray Cherenkov radiation and laser X-ray (gamma-ray) generation are considered.
It was shown that the “traditional” condition of Cherenkov radiation is incorrect and takes place only in idealized case of a completely homogenous medium without...
