Causes of Magnetic-field Nonuniformity and Its Effect of Stability of Theta-pinch Plasma [with List of References] PDF Download
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Author:
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ISBN:
Category : Pinch effect (Physics)
Languages : en
Pages : 63
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Book Description
Author: Joseph Norwood
Publisher:
ISBN:
Category : Pinch effect (Physics)
Languages : en
Pages : 76
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Book Description
The various instabilities which beset the theta-pinch plasma are described in some detail, and the importance of the role of magnetic-field uniformity is demonstrated. Sources of the field nonuniformity are delineated and discussed. These included the collector-plate geometry, the nonlinear effect of the plasma, and effects in the coil, discontinuity in gap spacing as the current flows into the coil, and effects of the alteration in axial current distribution due to skin effect.
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ISBN:
Category : Pinch effect (Physics)
Languages : en
Pages : 63
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Author:
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ISBN:
Category : Government publications
Languages : en
Pages :
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Author: Alan Wootton
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Category :
Languages : en
Pages :
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Author: Abdulgader Feturi Almagri
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ISBN:
Category :
Languages : en
Pages : 260
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Author: I. F. Kvartskava
Publisher:
ISBN:
Category : Pinch effect (Physics)
Languages : en
Pages : 24
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Author: Howard M. Stainer
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ISBN:
Category :
Languages : en
Pages : 71
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Book Description
A theoretical study was made of the characteristics of structured plasma puffs produced in a two-coil theta-pinch gun. The puffs are fired into a drift tube containing a longitudinal magnetic field, and their subsequent behavior is analyzed. Electron-electron and ion-ion collision times are short enough so that scalar pressures (P = nkT) can be used. Ion-electron collision times, however, are of the duration of the experiment or longer, allowing the use of two-fluid moment equations. An idealized model for the plasma puffs is proposed in which the ion fluid rotates as a rigid body in one direction about the longitudinal axis, and the electron fluid rotates in the opposite direction. This high-Beta model yields self-consistent equilibrium density and magnetic field profiles, stemming from a balance among thermal, magnetic, centrifugal, and electrostatic forces, that are compatible with observation. It is shown that double magnetic pick-up loop signals can be analyzed to ascertain the temperature, peak density, angular momentum, etc., of the plasma as it travels down the tube, and a sample calculation is presented to indicate the probable evolution of a typical puff. Thus, the model provides a self-consistent high-Beta approach to the problem of plasma and magnetic-field interaction. (Author).
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Category : Union catalogs
Languages : en
Pages : 648
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Includes entries for maps and atlases.
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Category : Controlled fusion
Languages : en
Pages : 120
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Book Description
Author: A. Hasegawa
Publisher: Springer Science & Business Media
ISBN: 3642659802
Category : Science
Languages : en
Pages : 229
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Book Description
In recent years the significant progress in satellite-based observations of plasma states and associated electromagnetic phenomena in space has resulted in the accumulation of much evidence of various plasma instabilities. Today plasma instabilities are believed to be responsible for electromagnetic radiation as well as for many of the macroscopic dynamics of plasmas in space. Most students who begin to study plasma physics are intrigued by the unstable nature of plasmas compared with other states of matter; however, they often become frustrated because there are so many in stabilities. Such frustration explains in part why there is no textbook which treats this subject exclusively. A description of plasma instabilities in a systematic way is nontrivial and takes a pertinacious effort. This book is an attempt to provide a basic introduction on the subject and covers most of the important instabilities. However, the author must apologize for any omission of references to contributions of individuals who deserve more credit. The reader is assumed to have a general knowledge of plasma physics obtainable in an undergraduate course. The book is intended to be used as a reference text on the subject of plasma instabilities at the under graduate level as well as for a text in a special course in graduate school. Because the book is part of a series on physics and chemistry in space, emphasis is placed on plasma instabilities relevant in space plasmas.
