نتایج جستجو برای: plasma kinetic theory
تعداد نتایج: 1203725 فیلتر نتایج به سال:
By orbit-limited motion (OLM) theory and the kinetic model, currents carried by electronsand ions on the dust grain are obtained and the effects of temperature and drift velocity of ions on thedust grain electrical potential are considered. The calculations were performed for finding the role of densities of dust grains and ions on the dust grain electrical potential which is the ma...
We argue that the correct definition of the electric current in the chiral kinetic theory for Weyl materials should include the Chern-Simons contribution that makes the theory consistent with the local conservation of the electric charge in electromagnetic and strain-induced pseudoelectromagnetic fields. By making use of such a kinetic theory, we study the plasma frequencies of collective modes...
Relativistic magnetohydrodynamics (RMHD) provides an extremely useful description of the low-energy long-wavelength phenomena in a variety physical systems from quark-gluon plasma heavy-ion collisions to matters supernovas, compact stars, and early universe. We review recent theoretical progresses RMHD, such as formulation RMHD perspective magnetic flux conservation using entropy-current analys...
A standard version of a kinetic instability for the generation of Langmuir waves by a beam of electrons is adapted to describe the analogous instability due to a beam of neutrinos. The interaction between a Langmuir wave and a neutrino is treated in the one-loop approximation to lowest order in an expansion in 1/M W in the standard electroweak model. It is shown that this kinetic instability is...
Symmetrically designed fusion and heat concepts, space propulsion, energy conversion issues with a particular interest in kinetic analysis, plasma power balance, advanced fuels, alternative systems as new trends experiments theory, physics, engineering, very specific related areas such processes, cosmology, turbulence are important fundamental applied science from an engineering physics perspec...
the modeling of kinetic and isotherm curves acquired in adsorption of polycyclic aromatic hydrocarbons (pahs) as a model compound (phenanthrene) on activated carbons in the organic solvent. all the runs were carried out in a batch system at atmospheric pressure, process temperature of 24±2°c, and using the 100 ml phenanthrene in cyclohexan. this experimental work was mainly focused on the study...
The effects of the ion temperature are discussed in a two-ion electron plasma and for a model applicable to the oscillating sheath theory that has recently been much in the focus of research. The differences between the fluid and kinetic models are pointed out, as well as the differences between the approximative kinetic description (which involves the expansion of the plasma dispersion functio...
An application of approximate transformation groups to study dynamics a system with distinct time scales is discussed. The utilization the Krylov-Bogoliubov-Mitropolsky method averaging find solutions Lie equations considered. Physical illustrations from plasma kinetic theory demonstrate potentialities suggested approach. Several examples invariant for Vlasov-Maxwell two-component (electron-ion...
Using the Langevin approach and the multiscale technique, a kinetic theory of the time and space nonlocal fluctuations in the collisional plasma is constructed. In local equilibrium a generalized version of the CallenWelton theorem is derived. It is shown that not only the dissipation but also the time and space derivatives of the dispersion determine the amplitude and the width of the spectrum...
Thermally excited plasma modes are observed in near-thermal-equilibrium pure electron plasmas over a temperature range of 0.05<kT<5 eV. The measured thermal emission spectra together with a plasma-antenna coupling calibration uniquely determine the temperature. This calibration is obtained from the spectra themselves when absorption of the receiver-generated noise is significant, or from kineti...
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