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MAGNETIC HELICITY, SPHEROMAKS, SOLAR CORONA

LOOPS, AND ASTROPHYSICAL JETS


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    Sinopse

    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. Contents: Introduction 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 Dynamics Associated with Relaxation: Kinks, Rayleigh-Taylor, Hard X-Rays Beyond MHD: Whistler Waves and Fast Magnetic Reconnection Zero-? Models for Solar and Space Phenomena: Helicity, Force-Free Equilibria Finite-? Models and Experiments for Solar Phenomena: Collimation, Flows, Expansion Beyond MHD: Extreme Particle Orbits in Helical Magnetic Fields Finite-? Toroidal Magnetic Cloud Model Astrophysical Jets, Accretion, Angular Momentum Removal, and Space Dynamos Appendices: Vector Identities and Operators Bessel Orthogonality Relations Capacitor Banks Transmission Lines, Pulse Forming Networks, and Transformers Selected Formulae Readership: Researchers, graduate students, and advanced undergraduates in plasma physics, solar physics, and astrophysics; mathematicians interested in helicity, topology, and self-organization. Key Features: Unique, no completing titles This new revision contains discussion of dynamics underlying self-organization (Taylor relaxation) This new revision contains updates on spheromak research since 2000

    Detalhes do Produto

      • Ano de Edição: 2018
      • Ano:  2018
      • País de Produção: Canada
      • Código de Barras:  2020103982964
      • ISBN:  9781786345165

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