Dmitri Vainchtein
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Efficiency of nonlinear resonant acceleration of electrons by high-frequency whistler-mode waves in the Earth’s radiation belt, Earth’s magnetotail, and at the bow shock. Open
Electromagnetic whistler-mode waves observed within the Earth’s radiation belts, in the Earth’s magnetotail, and at the bow shock may have sufficiently high amplitudes to resonate with electrons nonlinearly. In inhomogeneous background mag…
Contributions of reflection poins and current sheet on scattering of energetic electrons by Kinetic Alfven Waves Open
Electron distributions associated with injections can be unstable to various high-frequency waves and low-frequency kinetic Alfven waves (KAW). Such scattering, often associated with resonances, causes a pitch-angle diffusion and generates…
Nonlinear resonant interactions of radiation belt electrons with intense whistler-mode waves Open
The dynamics of the Earth's outer radiation belt, filled by energetic electron fluxes, is largely controlled by electron resonant interactions with electromagnetic whistler-mode waves. The most coherent and intense waves resonantly interac…
Electron Resonant Interaction With Coherent ULF Waves: Hamiltonian Approach Open
Electron resonant interaction with ultra‐low‐frequency (ULF) waves is considered to be a driver of electron radial transport in Earth’s inner magnetosphere. Traditional concept of such interaction assumes the electron slow diffusive scatte…
Hamiltonian approach to the electron resonant interaction with coherent ULF waves Open
Electron resonant interaction with ultra-low-frequency (ULF) waves is the one of the main drivers of the electron radial transport in the Earth's inner magnetosphere. Recent spacecraft observations reported a possibility for electrons to r…
View article: Effects of Non-Thermal Plasma on the Transition from Nano-Crystalline to Amorphous Structure in Water and Subsequent Effects on Viscosity
Effects of Non-Thermal Plasma on the Transition from Nano-Crystalline to Amorphous Structure in Water and Subsequent Effects on Viscosity Open
Recent studies have demonstrated that the physical properties of water treated with non-thermal plasma, or plasma-activated water (PAW), significantly differ from those of distilled water. For example, contrary to expectation, the viscosit…
Parametrization of Energetic Ion and Electron Fluxes in the Near‐Earth Magnetotail Open
The near‐Earth plasma sheet region is the main source of energetic (tens to hundreds keV) ion and electron populations transported by convection and injections into the inner magnetosphere. Energetic ions from the plasma sheet contribute t…
The influence of the leading-edge angle of subgrade on the aerodynamic loads of a high-speed train in a wind tunnel Open
The purpose of this study is to establish the correlation between the boundary layer over the subgrade and the aerodynamic loads acting on the train model in conventional wind tunnel tests. Firstly, flow characteristics around the subgrade…
Quantifying the Contribution of Nonlinear Resonant Effects to Diffusion Rates Open
The wave-particle resonant interaction is a key process controlling energetic electron flux dynamics in the Earth’s radiation belts. All existing radiation belt codes are Fokker-Planck models relying on the quasi-linear diffusion theory to…
Dataset for "Parametrization of energetic ion and electron fluxes in the near-Earth magnetotail" draft Open
This archive contains four dataset of electron and ion fluxes measured by MMS, THEMIS, and GOES mission in the near-Earth plasma sheet. We used three THEMIS inner probes measurements from 2008-2020, GOES-13 measurements from 2011-2017, GOE…
Dataset for "Parametrization of energetic ion and electron fluxes in the near-Earth magnetotail" draft Open
This archive contains four dataset of electron and ion fluxes measured by MMS, THEMIS, and GOES mission in the near-Earth plasma sheet. We used three THEMIS inner probes measurements from 2008-2020, GOES-13 measurements from 2011-2017, GOE…
Effects of Plasma on Physical Properties of Water: Nanocrystalline-to-Amorphous Phase Transition and Improving Produce Washing Open
Washing fresh produce using Plasma-activated water recently became a promising eco-friendly alternative to using chemical additives such as Chlorine. We discuss the produce-washing experiments that illustrate that addition of plasma to was…
Regimes of charged particle dynamics in current sheets: the machine learning approach Open
Current sheets are spatially localized almost-1D structures with intense plasma currents. They play a key role in storing the magnetic field energy and they separate different plasma populations in planetary magnetospheres, the solar wind,…
View article: Effects of plasma on physical properties of water: nanocrystalline-to-amorphous phase transition and improving produce washing
Effects of plasma on physical properties of water: nanocrystalline-to-amorphous phase transition and improving produce washing Open
Recently is was discovered in various applications that many physical and chemical properties of water change their temperature dependence between about 35 and 60 degrees Celsius. In particular, heat conductance, light absorption, and surf…
Comparison of Energetic Electron Fluxes Measured by GPS and THEMIS Spacecraft in the Inner Magnetosphere Open
Key elements of space weather models are energetic electron fluxes in the inner magnetosphere and the outer radiation belt. Flux depletion is driven by various loss processes: scattering into atmosphere, magnetopause shadowing. Flux enhanc…
On the Nature of Intense Sub‐Relativistic Electron Precipitation Open
Energetic electron precipitation into Earth's atmosphere is an important process for radiation belt dynamics and magnetosphere‐ionosphere coupling. The most intense form of such precipitation is microbursts—short‐lived bursts of precipitat…
View article: Effects of plasma on physical properties of water: nanocrystalline-to-amorphous phase transition and improving produce washing
Effects of plasma on physical properties of water: nanocrystalline-to-amorphous phase transition and improving produce washing Open
Recently is was discovered in various applications that many physical and chemical properties of water change their temperature dependence between about 35 and 60 degrees Celsius. In particular, heat conductance, light absorption, and surf…
Role of the nonlinear Landau resonance in intense precipitations of sub-relativistic electrons Open
Precipitations of energetic electrons into the Earth's atmosphere are important factor of radiation belt dynamics and the magnetosphere-ionosphere coupling. Microbursts, which are the most intense of such precipitations, are short-living b…
Interaction of rotational discontinuities with energetic ions in the precursor of the Earth’s bow shock Open
We combined in-situ solar wind observations by ARTEMIS and MMS missions with kinetic hybrid simulations to study the interaction of solar wind rotational discontinuities (RDs) with the foreshock of the Earth’s bow shock. We found that whis…
View article: Long-term dynamics driven by resonant wave–particle interactions: from Hamiltonian resonance theory to phase space mapping
Long-term dynamics driven by resonant wave–particle interactions: from Hamiltonian resonance theory to phase space mapping Open
In this study we consider the Hamiltonian approach for the construction of a map for a system with nonlinear resonant interaction, including phase trapping and phase bunching effects. We derive basic equations for a single resonant traject…
A Numerical Approach for Simulating a High-Speed Train Passing through a Tornado-Like Vortex Open
Tornados are one of the most common natural disasters, but their occurrence can be sudden and unpredictable. For trains operating in the areas where tornadoes frequently happen, the operation safety is challenged. Tornado generator was rec…
Can the “Maximum Power Principle” Be Applied to Pulsed Dielectric Barrier Discharge? Open
In this paper, we report a qualitative model of operation and energy release in pulsed dielectric barrier discharges (DBDs). We demonstrate that pulsed DBDs operate according to the “maximum power principle” and explain the relevant physic…
Nonlinear resonances generate large-scale convection cells in phase space Open
It is well known that resonance phenomena can destroy adiabatic invariance and cause chaos and mixing. In the present Rapid Communication, we show that a nonlinear wave-particle resonant interaction may do the opposite-generate large-scale…
Evolution of Electron Distribution Driven by Nonlinear Resonances With Intense Field‐Aligned Chorus Waves Open
Resonant electron interaction with whistler mode chorus waves is recognized as one of the main drivers of radiation belt dynamics. For moderate wave intensity, this interaction is well described by quasi‐linear theory. However, recent stat…
Charged particle dynamics in turbulent current sheets Open
We study dynamics of charged particle in current sheets with magnetic fluctuations. We use the adiabatic theory to describe the nonperturbed charged particle motion and show that magnetic field fluctuations destroy the adiabatic invariant.…