?
Неоднородность структурных и динамических характеристик пылевой плазмы в газовом разряде
Журнал экспериментальной и теоретической физики. 2020. Т. 157. № 1. С. 180-188.
Keywords: пылевая плазма
Publication based on the results of:
Попель С.И., Морозова Т. И., Физика плазмы 2017 Т. 43 № 5 С. 474-484
The wave processes that take place under the interaction of the Earth’s magnetosphere with dusty plasma near the lunar surface are considered. It is shown that the waves can be excited for the photoelectron parameters corresponding to the quantum yield of the lunar regolith reported by Willis et al. [Photon and Particle Interactions with Surfaces ...
Added: January 12, 2018
Попель С.И., Голубь А. П., Захаров А. В. et al., Письма в Журнал экспериментальной и теоретической физики 2017 Т. 106 № 8 С. 485-490
It has been shown that a dusty plasma is formed in the surface layer over the illuminated part of Mars’ satellite Phobos owing to photoelectric and electrostatic processes. The distribution functions of photoelectrons near its surface, altitude dependences of the density of dust particles, and their charges and sizes, as well as electric fields, have ...
Added: January 12, 2018
Timofeev A., Nikolaev V. S., Physics of Plasmas 2019 Vol. 26 No. 073701 P. 1-8
A crystalline system of strongly screened Yukawa particles in a harmonic trap is under consideration. We show that structural and dynamic properties of confined Yukawa crystals are fundamentally nonuniform. The average interparticle distance, thermal oscillation amplitude, and Lindemann and inverse coupling parameters are found to increase with the radial distance from the center of a ...
Added: October 29, 2019
Голубь А. П., Popel S., Письма в Журнал экспериментальной и теоретической физики 2021 Т. 113 № 7 С. 440-445
The formation of a dusty plasma in photoelectric and electrostatic processes in the near-surface layer over the illuminated part of the moon of Mars Phobos is discussed. The parameters characterizing trajectories of dust particles have been determined within a physicomathematical model for the self-consistent description of densities of photoelectrons and dust particles over the illuminated part of the ...
Added: June 12, 2021
Izvekova Y. N., Morozova T. I., Popel S.I., IEEE Transactions on Plasma Science 2018 Vol. 46 No. 4 P. 731-736
Wave processes occurring under the interaction of the Earth's magnetosphere with dusty plasma near the lunar surface are studied. Ion-acoustic waves are shown to be excited in some regions of the magnetosphere due to the development of a linear hydrodynamic instability. This results in the excitation of ion-acoustic turbulence in these regions. Dust-acoustic waves are ...
Added: January 31, 2018
Timofeev A., Journal of Physics: Conference Series 2019 Vol. 1147 No. 012100 P. 1-6
The description of the properties of the plasma–dust system can be improved by using elements of thermodynamics. Divergence of the dusty particles trajectories allows us to estimate Krylov–Kolmogorov–Sinai entropy for a system of dust particles in plasma. In this way, we can verify if the behavior of the K-entropy of the dusty plasma subsystem in ...
Added: October 29, 2019
Popel S., Голубь А. П., Захаров А. В. et al., Физика плазмы 2020 Т. 46 № 3 С. 219-226
The possibility of the formation of microspherules in plasma-dust processes initiated by meteoroids impacting the lunar surface is discussed. It is demonstrated that spherules are formed from the material of the melt zone created by a high-speed meteoroid impacting the lunar surface. Initially, they rise above the surface of the Moon and then fall back. ...
Added: April 7, 2020
Дубинский А. Ю., Попель С.И., Космические исследования 2019 Т. 57 № 2 С. 93-98
Показана возможность высвобождения из кристаллической решетки диоксида кремния в лунном реголите атомов кислорода как частей молекул гидроксида серебра. Гидроксид серебра, в свою очередь, может относительно легко вступать в реакцию с водородом, что приводит к образованию воды и серебра. Тем самым показана возможность образования молекул воды, включенных в приповерхностный лунный грунт. Присутствие молекул воды в лунном грунте может ...
Added: February 2, 2019
Semyonov V., Timofeev A., IEEE Transactions on Plasma Science 2018 Vol. 46 No. 5 P. 1855-1858
Dust particles under certain conditions can acquire kinetic energy of the order of 10 eV and higher, far above the temperature of gas and temperatures of ions and electrons in the discharge. Furthermore, significant difference of mean horizontal and vertical energy is observed. Such difference can be explained by the energy transfer between degrees of ...
Added: October 30, 2018
Извекова Ю. Н., Popel S., Извеков О. Я., Физика плазмы 2020 Т. 46 № 1 С. 72-77
The possibility of excitation of oscillations in a Schumann resonator in the atmosphere of Mars is discussed. On Earth, the main source of energy in the resonator cavity are thunderstorms at tropical latitudes. On Mars, electric phenomena are possible during dust events such as dust columns and dust storms. The charging of dust grains in a dust column ...
Added: April 3, 2020
Samoilov I. S., Baev V. P., Timofeev A. et al., Journal of Experimental and Theoretical Physics 2017 Vol. 124 No. 3 P. 496-504
Dusty plasma structures in glow discharge in helium in the temperature range of 5–300 K are investigated experimentally. We have described the experimental setup that makes it possible to continuously vary the temperature regime. The method for experimental data processing has been described. We have measured interparticle distances in the temperature range of 9–295 K ...
Added: June 7, 2017
Timofeev Alexey Vladimirovich, Николаев В. С., Journal of Physics: Conference Series 2016 Vol. 774 No. 012172 P. 1-6
Particles interaction and value of the screening length in dusty plasma systems
are of great interest in dusty plasma area. Three inter-particle potentials (Debye potential,
Gurevich potential and interaction potential in the weakly collisional regime) are used to solve
equilibrium equations for two dusty particles suspended in a parabolic trap. The inter-particle
distance dependence on screening length, trap parameter ...
Added: February 17, 2017
Timofeev A., Nikolaev V., Journal of Physics: Conference Series 2020 Vol. 1556 P. 012077
A system of like charges interacting with a weak repulsive Yukawa potential and confined in a one-dimensional parabolic electrostatic trap is under consideration. It is shown that inter-particle distance in this system grows from the center of the structure to its periphery. The same effect takes place for the mean square displacement of particles from ...
Added: October 23, 2020
Kopnin S.I., Morozova T. I., Popel S.I., IEEE Transactions on Plasma Science 2018 Vol. 46 No. 4 P. 701-703
A theory is developed which describes the processes of dust particle charging in the situation when dust particles are subjected to the action of a beam of electrons. It is shown that in this situation it is necessary to consider the electron field emission in addition to the influence of the electron beam on the ...
Added: January 31, 2018
Копнин С.И., Морозова Т. И., Попель С.И., Физика плазмы 2019 Т. 45 № 9 С. 831-838
Linear and nonlinear waves in the near-surface plasma at Phobos and Deimos are considered. It is shown that the motion of the solar wind relative to photoelectrons and charged dust grains violates the isotropy of the electron distribution function in the near-surface plasma at the Martian satellites, which leads to the development of instability and excitation of high-frequency ...
Added: September 22, 2019
Попель С.И., Голубь А. П., Зеленый Л.М. et al., Письма в Журнал экспериментальной и теоретической физики 2017 Т. 105 № 10 С. 594-599
The possibility of the formation of a plasma-dust cloud in the exosphere of the Moon owing to impacts of meteoroids on the lunar surface is discussed. Attention is focused on dust particles at large altitudes of the order of 10-100 km at which measurements were performed within the NASA LADEE mission. It has been shown ...
Added: January 12, 2018
Semyonov V., Timofeev A., Математическое моделирование 2018 Т. 30 № 2 С. 3-17
Model allowing analytical and numerical studying of dusty plasma system is used to describe dynamics of monolayer of dusty particles. Mechanism of energy transfer between horizontal and vertical particles motion based on parametric resonance is described by an extended Mathieu equation. Resonance regions and growth rates of dust particles energy are obtained. Conditions of resonance ...
Added: May 24, 2018
Timofeev A., Nikolaev V. S., Journal of Physics: Conference Series 2019 Vol. 1147 No. 012109 P. 1-7
Average distance between particles of dust in dusty plasma crystals is sensitive to the temperature of neutral atoms in a glow discharge plasma. In some experiments a significant decrease of average inter-particle distance after cooling to low temperatures is observed: the distance at 100 K is up to 4 times less than at 300 K. ...
Added: October 31, 2019
Antipov A., Seleznev V., Vakhtomin Y. et al., IOP Conference Series: Materials Science and Engineering (MSE) 2020 Vol. 781 No. 1 P. 012011-1-012011-5
Spectral characteristics of WSi and NbN superconducting single-photon detectors with different surface resistance and width of nanowire strips have been investigated in the wavelength range of 1.3-2.5 µm. WSi structures with narrower strips demonstrated better performance for detection of single photons in longer wavelength range. The difference in normalized photon count rate for such structures ...
Added: December 10, 2020
Budkov Y., Kolesnikov A. L., Polymer Science - Series C 2018 Vol. 60 No. Supplement 1 P. 148-159
Theoretical models of the conformational behavior of flexible polymer chains in mixed solvents enunciated in the world literature during the last decade are critically reviewed. Models describing different mechanisms of coil-to-globule transitions in a good solvent induced by cosolvent addition are highlighted. Special attention is given to the analysis of theoretical approaches to describing the ...
Added: November 30, 2018
Kalmykov A., Melentiev P., Balykin V., Laser Physics Letters 2020 Vol. 17 No. 4 P. 045901
In this paper we present measurements and comparison of SPP propagation length at the practically important telecom wavelength (1560 nm) as well as in the near-infrared and visible spectral ranges. The measurements were carried out for plane SPP waves excited on Ag film surface using optical microscopy of SPP waves in the far field. We ...
Added: January 15, 2021
M. : Faculty of Physics, MSU, 2017
The Low Temperature Physics Conference is an international event held every three years, under the auspices of the IUPAP through its Commission C5 on Low Temperature Physics. The aim of these conferences is to exchange information and views among the members of the international scientific community in the general field of Low Temperature Physics. It ...
Added: October 1, 2017
Kuzmichev S. A., Kuzmicheva T. E., Tchesnokov S. N. et al., Journal of Superconductivity and Novel Magnetism 2016 Vol. 29 No. 4 P. 1111-1116
We present temperature dependences of the large and the small superconducting gaps measured directly by SnS-Andreev spectroscopy in various Fe-based superconductors and MgB2. The experimental L,S(T ) are wellfitted with a two-gap model based on Moskalenko and Suhl system of equations (supplemented with a BCS integral renormalization). From the fitting procedure, we estimate the key ...
Added: March 19, 2016
Boldyrev K., Романов А., Хаула Е. et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019