A5075001357- Particle Accelerators and Free-Electron Lasers
- Ion-surface interactions and analysis
- Gyrotron and Vacuum Electronics Research
- Particle accelerators and beam dynamics
- Integrated Circuits and Semiconductor Failure Analysis
- Diamond and Carbon-based Materials Research
- Crystallography and Radiation Phenomena
- Electron and X-Ray Spectroscopy Techniques
- High-pressure geophysics and materials
- Radiation Detection and Scintillator Technologies
- Metal and Thin Film Mechanics
- Terahertz technology and applications
- Antenna Design and Optimization
- Infrared Target Detection Methodologies
- Laser-Plasma Interactions and Diagnostics
- Vacuum and Plasma Arcs
- Particle Detector Development and Performance
- Advanced Sensor Technologies Research
Institute of High Current Electronics
2004-2021
Siberian Branch of the Russian Academy of Sciences
2020-2021
National Research Tomsk State University
2012-2020
Tomsk Polytechnic University
2012-2020
The first observation and investigation of a new mechanism resonant Cherenkov diffraction radiation appearing when relativistic 6 MeV electrons move alongside periodically shaped Teflon target have been presented analysed. Numerical simulations performed using computer code KARAT are in good agreement with the experimental results. This is promising technique for generation monochromatisation THz sub-THz beams that could be integrated into any short bunch linear accelerator facility...
Different types of polarization radiation generated by a relativistic electron beam are simulated using fully electromagnetic particle-in-cell (PIC) code KARAT. The simulation results for diffraction radiation, transition Smith-Purcell and Vavilov-Cherenkov in good agreement with experimental data analytical models. Modern PIC is tool to check predict results.
In this work the expression for ponderomotive potential responsible electron channeling in field of crossed laser beams is analyzed. The influence lasers crossing angle and velocity on force described two plane waves approximation revealing "nonrelativistic inversion" phenomenon. Some estimations beam density electrons channeled such system are given.
In the report we present simulation results for angular distributions of radiation as well spectral obtained by PiC code KARAT conditions experiment [1]. We show that strict satisfaction condition θcone=θCR/2 (θcone is an opening cone angle, θCR=arcos 1/βn) Cherenkov β =v/c, n a refractive index) propagating beam retained hollow structure distances much larger than radiator length. simulated "radii" such at different from exit surface and estimated divergence (CR) beam.
Generation of coherent THz Smith-Purcell radiation by single electron bunch or multi-bunched beam was simulated for lamellar, sinusoidal and echelette gratings. The dependences the CSPR intensity corrugation gratings depth were investigated. angular spectral characteristics different profiles diffraction obtained. It is shown that in case femtosecond with 10 MeV energy grating period 292 μm groove 60 has uniform distribution high intensity.
Here we investigate the changes in cathodoluminescence spectra of HPHT diamonds irradiated by electron beam at room temperature (298 K) and liquid nitrogen (77K). The diamond samples was varied from 80 to 300 K. RADAN-220-IMA3-150E accelerator used as a source electrons (120 keV). For control platinum thermo-resistor. All experiments were conducted vacuum chamber (10 <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">-2</sub> Pa). Optical recorded...
The paper presents the results of measuring absorbed dose, performed using dosimetric films on a wide-aperture pulse-periodic electron accelerator "DUET" with grid plasma cathode based low-pressure arc discharge and output generated beam into ambient atmosphere. possibility this to irradiate wheat, barley, oats, peas, corn has been previously shown. In work, we numerical calculations distribution dose over grain depth. Calculations show that depends initial energy (in range 100-160 keV) is...
The spectral characteristics of the cathodoluminescence several synthetic nitrogen-containing diamond samples upon excitation by an electron beam with energy up to 300 keV in temperature range 80-800 K have been studied. Data on quenching various impurity-defect compositions at elevated temperatures (more than 400 K) obtained. It has found that rate thermal NV0 centers is higher NV ~500 and higher.