INTERACTION OF RADIATION AND ELEMENTARY PARTICLES WITH MATTER
The laboratory was established in 1982 with the aim of conducting research on the interaction of elementary particles and X-rays with materials possessing various properties in the fields of condensed matter physics, materials science, and acoustophysics.
The laboratory carries out fundamental and applied research devoted to revealing the mechanisms of spatiotemporal control of the characteristics of diffracted X-ray, synchrotron, neutron, electron, and gamma beams in single crystals and materials with periodic micro- and nanostructures under the influence of external acoustic waves, thermal, mechanical, and other external effects.
The research activities also include studies of the formation of diffraction fields of short-wavelength radiation in perfect and deformed crystal lattices, as well as theoretical and experimental investigations in crystal optics and diffraction optics.
The laboratory investigates the possibilities for controlling the generation processes of parametric, transition, Cherenkov, diffraction, channeling, and coherent bremsstrahlung radiation resulting from the interaction of relativistic charged particles with materials of different properties.
The development and creation of acousto-optical elements with controllable characteristics for elementary particle and X-ray beams are also carried out. In parallel, new, more sensitive, and high-speed X-ray diffraction, local elemental analysis, and microtomographic methods are being developed and implemented for the investigation of biological, archaeological, and geological samples, as well as condensed matter systems.
The laboratory also studies the features of wave-field formation of visible and X-ray radiation resulting from diffraction by various types of periodic structures, as well as the development of efficient methods for controlling the spatiotemporal characteristics of optical and X-ray radiation with high resolution and improved performance parameters.
Over the last five years (2020–2025), approximately 70 scientific papers have been published with the participation of the laboratory staff as co-authors.
At present, the main research directions are as follows:
Investigation of the phenomenon of anomalous absorption of X-ray radiation under Laue geometry of Bragg diffraction from various atomic planes in SiO₂, LiNbO₃, and Al₂O₃ single crystals in the presence of external acoustic waves and thermal gradients.
Exploration and investigation of the possibility of large-angular-aperture two-dimensional focusing of hard X-ray radiation and thermal neutrons reflected from bent single crystals.
Theoretical study of the spatiotemporal characteristics of electromagnetic radiation and neutron beams diffracted by artificial periodic structures.
Investigation of the possibility of obtaining phase contrast from test samples using X-ray interferometric methods, reconstruction of their images, and development of the corresponding software package.
Performance of experiments at accelerators of various scientific centers (within the ATORCH program, including DESY 2 Test Beam, CANDLE, TPU, etc.) aimed at studying the characteristics of parametric, coherent bremsstrahlung, Cherenkov, and transition radiation of relativistic charged particles in SiO₂ and LiNbO₃ single crystals under external acoustic oscillations and thermal gradients, as well as in artificial periodic structures.
