By Thomas M. York, Haibin Tang
Introduction to Plasmas and Plasma Dynamics presents an obtainable creation to the certainty of extreme temperature, ionized gases essential to behavior study and boost purposes relating to plasmas. whereas general displays of introductory fabric emphasize physics and the theoretical foundation of the subjects, this article acquaints the reader with the context of the elemental info and offers the basic wisdom required for complex paintings or examine.
The e-book relates concept to appropriate units and mechanisms, providing a transparent define of study and mathematical element; it highlights the importance of the options with studies of modern functions and traits in plasma engineering, together with issues of plasma formation and magnetic fusion, plasma thrusters and house propulsion.
- Presents the basic ideas of plasma dynamics wanted for potent study and improvement paintings in plasma applications
- Emphasizes actual realizing and aiding theoretical beginning just about their usage in devices, mechanisms and phenomena
- Covers a number of purposes, together with power conversion, area propulsion, magnetic fusion, and house physics.
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Extra resources for Introduction to plasmas and plasma dynamics: with reviews of applications in space propulsion, magnetic fusion, space physics
Example text
1997; Milligan and Gabriel, 1999, 2009): 1. The internal cathode plasma, which is present inside the hollow cathode. 2. The coupling plasma, which is immediately downstream of the cathode before the main discharge plasma. 3. The discharge plasma, which is mainly located in the discharge chamber. 4. The plume plasma, which is present outside the ion optics system. The ion thruster has been the subject of intensive research efforts over many years, and these devices have been successfully flight tested.
Efforts to understand geometric and power scaling of the MPD were pursued at NASA centers to advance the development of operational thrusters. A study of geometric changes in the thruster configuration for an AF-MPD in a lower power range (20–130 kW) as they relate to acceleration mechanisms through measurement of performance parameters was carried out (Myers, 1995). 18) the dimensions of cathode radius, rc; anode radius, ra; cathode length, Lc; and anode length, La were methodically varied and performance parameters (power, thrust, efficiencies) were evaluated.
This was consistent with earlier reported results by others, which showed a linear variation of Plasma Dynamics and Hydromagnetics: Reviews of Applications 231 thrust with the product (I$BAF). However, power deposition due to sheath and plasma voltage drops in the experimental data did not scale; the relationship to thruster geometry (anode and cathode radii) was also not compatible with available models. This relationship of thrust to discharge current and magnetic field is similar to that in the self-field MPD, except that applied field dominates self-field effects.