Magnetic helicity, spheromaks, solar corona loops, and astrophysical jets:

"Pedagogical in style, this book provides insights into plasma behavior valid over twenty orders of magnitude in both time and space. The book assumes that the reader has a basic knowledge of magnetohydrodynamics and explains topics using detailed theoretical analysis supported by discussion of...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: Bellan, Paul Murray 1948- (VerfasserIn)
Format: Elektronisch E-Book
Sprache:English
Veröffentlicht: London World Scientific Publishing Europe Limited 2018
Schlagworte:
Online-Zugang:UBY01
URL des Erstveröffentlichers
Zusammenfassung:"Pedagogical in style, this book provides insights into plasma behavior valid over twenty orders of magnitude in both time and space. The book assumes that the reader has a basic knowledge of magnetohydrodynamics and explains topics using detailed theoretical analysis supported by discussion of relevant experiments. This comprehensive approach gives the reader an understanding of the essential theoretical ideas and their application to real situations. The book starts by explaining the topological concept of magnetic helicity and then develops a helicity-based model that predicts the ultimate state towards which magnetically-dominated plasmas evolve. The model predicts that no matter how messy or complicated the dynamics, a great range of plasma configurations always self-organize to a unique, simple final state. This self-organization, called relaxation, is a fundamental concept that unifies understanding of spheromaks, solar corona loops, interplanetary magnetic clouds, and astrophysical jets. After establishing why relaxation occurs, the book then examines how relaxation occurs. It shows that relaxation involves a sequence of complex non-equilibrium dynamics including fast self-collimated plasma jets, kink instabilities, magnetic reconnection, and phenomena outside the realm of magnetohydrodynamics."--
Beschreibung:Revision of: Spheromaks: a practical application of magnetohydrodynamic dynamos and plasma self-organization, 2000. - Includes bibliographical references (pages 599-622) and index
Basic Concepts -- Magnetic Helicity -- Relaxation of an Isolated Configuration to the Taylor State -- Relaxation in Driven Configurations -- The MHD Energy Principle, Helicity, and Taylor States -- Survey of Spheromak Formation Schemes -- Classification of Regimes: An Imperfect Analogy to Thermodynamics -- Analysis of Isolated Cylindrical Spheromaks -- The Role of the Wall -- Analysis of Driven Spheromaks: Strong Coupling -- Helicity Flow and Dynamos -- Confinement and Transport in Spheromaks -- Some Important Practical Issues -- Basic Diagnostics for Spheromaks -- Applications of Spheromaks -- Initial Dynamics Leading to Relaxation: MHD Jets -- Later Dynamics Leading to Relaxation: Kinks and Rayleigh-Taylor -- Beyond MHD: Whistler Waves and Fast Magnetic Reconnection -- Beyond MHD: Extreme Particle Orbits in Helical Magnetic Fields -- Zero Beta Models for Solar and Space Phenomena: Helicity, Force-Free Equilibria -- Finite Beta Models and Experiments for Solar Phenomena: Collimation, Flows, Expansion -- Finite Beta Toroidal Magnetic Cloud Model -- Astrophysical Jets, Accretion, Angular Momentum Removal, and Space Dynamos
Beschreibung:1 online resource (653 pages) illustrations (some color)
ISBN:9781786345158

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