LABORATORY OF RADIATION PHYSICS
BELGOROD STATE UNIVERSITY
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TOPICS OF Ph.D. STUDIES:
1. Theoretical studies of high energy particles coherent emission processes in dense media;
2. Experimental studies of high energy particles and photon interaction with amorphous and
crystalline targets;
3. Theoretical studies of the general problems of stochastic physics;
4. Theoretical studies of the macroscopic particle motion in fluids.
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STAFF:
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N. Nasonov, Dr. of Science, Professor of physics, head of the laboratory
S. Blazhevich, PhD, assistant Professor of physics;
Y. Virchenko, Dr. of Science, Professor of mathematics;
I. Vnukov, Dr. of Science, Professor of physics;
N. Malay, Dr. of Science, Professor of physics;
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AREAS OF STUDY:
1. Theoretical and experimental investigations of high energy electron interactions with dense
media, including the scattering processes, the coherent and incoherent emission mechanisms
from amorphous and crystalline targets, the particle ionization energy losses, losses, the
channeling processes in aligned crystals;
2. Theoretical and experimental studies on the new possibilities of quasi monochromatic tunable
X-ray beam producing in a wide region of emitted photon energies;
3. Research into the physics of positron sources based on the coherent emission from relativistic
electrons crossing an aligned crystal;
4. X-ray diffraction processes, including the high energy photon quasi channeling in a crystal;
5. Applications of he radiation physics in medicine, medium analysis and so on;
6. Mathematical problems of statistical and stochastic physics;
7. General problems of mathematical physics,
8. Influence of internal forces to the movement of macroscopic particles in fluids;
9. General problems of the continuous medium mechanics.
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SOME OF RECENTRY OBTEINED PHYSICAL RESULTANTS:
1. The effect of an interference between the parametric X-rays and the coherent bremsstrahlung
from relativistic electron in a crystal has been predicted theoretically and observed for the fist
time experimentally;
2. The anomalous Ter - Mikaelian effect manifestation in the bremsstrahlung from relativistic
electrons, crossing a thin amorphous target has been predicted theoretically and observed for
the first time experimentally;
3. The occurrence of sharp maxima in the spectral-angular distribution of a relativistic electron
polarization bremsstrahlung (PB) in a polycrystal has been predicted theoretically and observed
for the first time experimentally;
4. Suppression of the PB from relativistic electrons crossing a diamond like carbon foil has been
observed and its possible explanation on the based of the developed PB theory for smallgrained media has been presented;
5. The suppression of parametric X-rays along en emitting particle velocity has been predicted for
the case of Bragg scattering geometry. It has been shown that this effect is due to the
anomalous signing of an emitted wave group velocity;
6. The effect of strong enhancement of the parametric X-rays angular density under condition of
the Borrmann effect predicted.
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THE IMMEDIATE TASKS:
1. The experimental verification of the one most important dynamical diffraction effect in the
physics of relativistic electron parametric X-rays, Known as the forward parametric X-rays;
2. The detailed theoretical and experimental search of the relativistic electron PB in a polycrystal
with a view to clarify the reason of the contradictions between our and Japanese results;
3. Theoretical search of ultrahigh energy electron bremsstrahlung with a view to explain the
unexpected experimental results obtained by SLAC group in an experiment with very thin gold
foil and multiGeV electrons;
4. Theoretical and experimental studies of the effect of MeV photon anomalous propagation
through aligned thick crystalline targets observed recently by Novosibirsk group;
5. Theoretical and experimental search of the Cherenkov effect of the vicinity of absorption edges
for different elements.
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SCIENTIFIC COLLABORATIONS:
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Lebedev Physical Institute of the Russian Academy of Sciences (FIAN);
NPI Lomonosov Moscow Sate University;
NPI Tomsk Politecnical University;
Mainz University;
Kyoto University;
Lyon University;
SLAC;
Kharkov Institute of Physics and Technology;
Erevan Physical Institute;
Budker Institute of Nuclear Physics.