Electron dynamics at the initial stage of floating-sheath formation
نویسندگان
چکیده
The problem of sheath formation in front of a conductive planar plate inserted into the plasma is formulated. Initially, the plate is assumed to be neutral. It is shown that the charging-up process of the plate is accompanied by the excitation of electron plasma waves.
منابع مشابه
Autolysis of Bacterial Cells Leads to Formation of Empty Sheaths by Leptothrix spp
The aquatic, Fe-oxidizing bacteria Leptothrix spp. produce uniquely shaped extracellular sheaths composed of organic bacterial polymers encrusted with inorganic elements from its aquatic environments. At the initial stage of sheath formation, bacterial cells were aligned in the sheath, but later most sheaths became empty. Here, we studied the mechanism of sheath hollowing by examining an isolat...
متن کاملWater radiolysis by gamma –irradiation for high quality synthesis of Nickel Oxide nano sheet
A simple, time effective and cost effective, methos was reported for synthesis of nickel oxide nanostructure. The NiO nanostructure was synthesized by gamma-irradiation method from NiSO4 precursor. The solution was irradiated by 60Co gamma-ray source at the dose rate of 40 Gy/min for determined time. The synthesized powders are characterized by means of X-ray powder diffraction (XRD), Energy-di...
متن کاملThe Transient Dynamics of a Beam Mounted on Spring Supports and Equipped with the Nonlinear Energy Sink
The transient dynamics of a beam mounted on springer-damper support and equipped with a nonlinear energy sink (NES) is investigated under the effects of shock loads. The equations of motion are derived using the Hamilton’s principle leading to four hybrid ordinary and partial differential equations and descritized using the Galerkin method. An adaptive Newmark method is employed for accurate an...
متن کاملDesigning a Dynamic Macro Econometric Model for the Iranian economy with Emphasizing on dynamics of the National Development Fund
Oil Revenue Management (ORM) has always been one of the key challenges facing the oil rich developing countries. In this regard, the main objective of this paper is to provide a dynamic macroeconometric model adapted to the state of the Iranian economy. Also, the assessment of the dynamics of the National Development Fund (NDF) and its impact on macroeconomic variables are discussed. The result...
متن کاملDissociation and Re-Aggregation of Multicell-Ensheathed Fragments Responsible for Rapid Production of Massive Clumps of Leptothrix Sheaths
Species of the Fe/Mn-oxidizing bacteria Leptothrix produce tremendous amounts of microtubular, Fe/Mn-encrusted sheaths within a few days in outwells of groundwater that can rapidly clog water systems. To understand this mode of rapid sheath production and define the timescales involved, behaviors of sheath-forming Leptothrix sp. strain OUMS1 were examined using time-lapse video at the initial s...
متن کامل