Пылевая плазма в тлеющем разряде гелия в диапазоне температур 5-300 К
Журнал экспериментальной и теоретической физики. 2017. Т. 151. № 3. С. 582-591.
Timofeev A., Николаев В. С., Амиров Р. Х.
Влияние параметров тлеющего разряда на среднее межчастичное расстояние в плазменно-пылевых структурах в диапазоне температур от криогенных до комнатной
, , Журнал экспериментальной и теоретической физики 2019 Т. 155 № 2 С. 356-370
The molecular dynamics method is used for studying the effect of forces acting in a dusty plasma and discharge parameters on the mean interparticle distance in structures in a dc glow discharge in the temperature range 50–300 K. We report on the results of the dependence of the mean interparticle distance on the neutral gas ...
Added: March 10, 2019
Dependence of average inter-particle distance upon the temperature of neutrals in dusty plasma crystals
, , Journal of Physics: Conference Series 2018 Vol. 946 No. 012146 P. 1-8
It is often suggested that inter-particle distance in stable dusty plasma structures decreases with cooling as a square root of neutral gas temperature. Deviations from this dependence (up to the increase at cryogenic temperatures) found in the experimental results for the pressures range 0.1–8.0 mbar and for the currents range 0.1–1.0 mA are given. Inter-particle ...
Added: October 31, 2018
, , Journal of Physics: Conference Series 2016 Vol. 774 No. 012170 P. 1-8
The self-consistency and basic openness of dusty plasma, charge fluctuations, high dissipation and other features of dusty plasma system lead to the appearance of a number of unusual and unique properties of dusty plasma. “Anomalous” heating of dusty particles, anisotropy of temperatures and other features, parametric resonance, charge fluctuations and interaction potential are among these unique properties. Study is ...
Added: February 17, 2017
, , 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
, , Journal of Physics: Conference Series 2016 Vol. 774 No. 012171 P. 1-5
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. Such heating can be explained by the energy transfer between degrees of freedom of a dusty plasma system. One of the mechanisms of such energy transfer ...
Added: February 17, 2017
, , 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
Пылевые звуковые солитоны в запыленной ионосферной плазме, содержащей адиабатически захваченные электроны
, , Письма в Журнал технической физики 2019 Т. 45 № 20 С. 26-29
The possible propagation of localized wave structures such as dust-acoustic solitons in dusty ionospheric plasma containing photoelectrons, electrons and ions of the ionosphere, and charged dust particles is considered. Intervals of the possible soliton velocities and amplitudes are determined. Solitary wave solutions for various dimensions and concentrations of particles in dusty ionospheric plasma are found. ...
Added: November 2, 2019
, , et al., Journal of Physics: Conference Series 2018 Vol. 946 P. 012142-1-012142-9
A possibility of the formation in the lunar exosphere of dust cloud due to meteoroid impacts onto the lunar surface is studied. The main attention is paid to the high altitudes over the lunar surface including the range of the altitudes between 30 and 110 km where the measurements of dust were performed within the ...
Added: May 20, 2018
, Journal of Physics: Conference Series 2015 Vol. 653 No. 012137 P. 1-6
Dust particles in plasma may have different values of average kinetic energy for vertical and horizontal motion. The partial equilibrium of the subsystems and the relaxation processes leading to this asymmetry are under consideration. A method for the relaxation time estimation in nonideal dusty plasma is suggested. The characteristic relaxation times of vertical and horizontal motion of dust particles ...
Added: March 24, 2016
О роли соударений с нейтралами в процессе модуляционного возбуждения пылевых звуковых возмущений в запыленной ионосфере
, , et al., Физика плазмы 2019 Т. 45 № 4 С. 346-352
Проведена оценка роли неупругих столковений электронов и ионов с нейтралами при развитии модуляционной неустойчивости электромагнитных волн с участием пылевых звуковых возмущений в плазме запыленной ионосферы, а также влияния столкновений электронов, ионов и пылевых частиц с нейтралами на проявления модуляционного взаимодействия в запыленной ионосфере. Показано, что влияние столкновений электронов и ионов с нейтралами при этом обычно менее ...
Added: June 2, 2019
, , et al., Physics Letters A 2020 Vol. 384 No. 26 P. 126627
The results are presented of the first investigation of linear and nonlinear processes associated with waves which are related to the presence of magnetic fields in dusty plasmas at the Moon. Excitation of lower-hybrid turbulence in dusty plasmas near the lunar surface is studied. It is shown that the lower-hybrid turbulence can be generated wherever ...
Added: June 12, 2020
, , , Физика плазмы 2019 Т. 45 № 10 С. 913-921
A self-consistent model of the formation and evolution of dusty plasma structures in the ionospheres of the Earth and Mars is presented. The model allows describing the formation of a stratified dust structure as a result of dust cloud evolution in the Earth's ionosphere. The structure forms due to the splitting of the primary cloud ...
Added: October 14, 2019
, , et al., Physics of Plasmas 2021 Vol. 28 No. 3 Article 033703
The development of modulational instability involving dust acoustic perturbations in dusty ionospheric plasma and in dusty plasmas of meteor tails in Earth’s ionosphere was considered. The effect of collisions of electrons, ions, and dust grains with neutrals at different altitudes was estimated. It is shown that, in this case, the influence of collisions of electrons and ions ...
Added: March 11, 2021
, , et al., Planetary and Space Science 2018 Vol. 156 P. 71-84
A renaissance is being observed currently in investigations of the Moon. The Luna-25 and Luna-27 missions are being prepared in Russia. At the same time, in connection with the future lunar missions, theory investigations of dust and dusty plasmas at the Moon are being carried out by scientists of the Space Research Institute of the Russian Academy of ...
Added: May 20, 2018
, , et al., Journal of Physics: Conference Series 2019 Vol. 1147 P. 1-11
Dusty plasmas are shown to be formed in a surface layer over the illuminated part of Martian satellites Phobos and Deimos owing to photoelectric and electrostatic processes. The distribution functions of photoelectrons near surfaces of the satellites, altitude dependences of the density of dust particles, and their charges and sizes, as well as electric fields, have been determined within ...
Added: January 21, 2019
, , et al., Письма в Журнал экспериментальной и теоретической физики 2018 Т. 108 № 6 С. 379-387
The nature of two dusty plasma clouds appearing because of the impact of a meteoroid on the surface of the Moon has been discussed. It has been shown that one of the clouds is formed by particles (or fragments) of regolith ejected into free space by a shock wave induced by the meteoroid impact on the surface ...
Added: November 1, 2018
, , , Физика плазмы 2018 Т. 44 № 8 С. 635-641
The formation of dusty plasma in the near-surface layer above the illuminated part of the Deimos, the satellite of Mars, due to photoelectric and electrostatic processes is analyzed. Using a physicomathematical model self-consistently describing the densities of photoelectrons and dust grains above the illuminated part of Deimos, the distribution function of photoelectrons near its surface is calculated and ...
Added: November 1, 2018
, , Доклады Академии наук 2012 Т. 446 № 4 С. 393-397
The small number of dust particles in the system and their large kinetic energy make it impossible to use the notion of “temperature” to describe the dynamics of dust particles in gas discharge without substantiation. We simulated the isolated and open systems of dust particles based on the molecular dynamics method and suggested the substantiation ...
Added: February 19, 2013
, , , Journal of Physics: Conference Series 2020 Vol. 1556 P. 012072
A self-consistent model for the formation and evolution of dusty plasmas in the Martian ionosphere is developed. The effects of the initial distributions of dust particles, as well as condensation and absorption of carbon dioxide and water molecules by dust particles, are studied. Theory values of characteristic sizes of dust grains and their charges are obtained. The theoretical values ...
Added: July 7, 2020
, , , Физика плазмы 2020 Т. 46 № 5 С. 441-455
A brief review is given of the dusty plasma near the surface of the Moon. Electrostatic processes represent an important factor of formation of such plasma. Problems related to theoretical and numerical modeling of the plasma-dust system near the Moon, its experimental investigation, and interpretation of data on near-lunar dusty plasma are formulated. ...
Added: May 19, 2020
, , Физика плазмы 2017 Т. 43 № 12 С. 1010-1017
Plasma-dust effects in the martian atmosphere are discussed. A specific feature of the martian atmosphere is the presence of dust grains in a wide range of altitudes. Taking into account the presence of the martian ionosphere and the high conductivity of the medium at lower altitudes, the appearance of plasma systems in the martian atmosphere ...
Added: February 6, 2018
, , et al., Odessa Astronomical Publications 2013 No. 26/2 P. 311-315
Now a day the task of comparative analysis of sample sources from different astronomical catalogs is becoming very topical for astronomers. It is useful both for the same spectral range data and for their cross-analysis for different spectral ranges. It is also important, that the real data from astronomical instruments is placed on-line. For the ...
Added: December 11, 2013
, , et al., Scripta Materialia 2014
A theoretical model is suggested to determine the critical conditions for generation of circular prismatic misfit dislocation loops in hollow core-shell nanoparticles. Based on a strict solution of the linear elasticity boundary-value problem for a circular prismatic dislocation loop in a free-surface shell, we examine the loop formation energy in the nanoparticle and show a ...
Added: March 19, 2014
, , Carbon (the Netherlands) 2015 Vol. 87 P. 358-364
The graphite melting temperature remains poorly determined despite the considerable effort accomplished since the work of Bundy (1963). The absence of a consensus on its melting temperature at normal conditions has been considered as a technical problem that motivated more and more sophisticated experiments. The experimental evidences of the maximum on the graphite melting curve ...
Added: March 15, 2017