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Download or read book Particle Acceleration During Magnetic Reconnection in Highly Magnetized Plasmas written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. Biskamp
Publisher : Cambridge University Press
ISBN 13 : 9780521582889
Total Pages : 154 pages
Book Rating : 4.5/5 (828 download)
Download or read book Magnetic Reconnection in Plasmas written by D. Biskamp and published by Cambridge University Press. This book was released on 2000-09-14 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, first published in 2000, is a comprehensive introduction to this major topic in plasma physics; for graduates and researchers.
Author : C Wendell Horton, Jr
Publisher : World Scientific
ISBN 13 : 9814483885
Total Pages : 518 pages
Book Rating : 4.8/5 (144 download)
Download or read book Turbulent Transport In Magnetized Plasmas written by C Wendell Horton, Jr and published by World Scientific. This book was released on 2012-08-22 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book explains how magnetized plasmas self-organize in states of electromagnetic turbulence that transports particles and energy out of the core plasma faster than anticipated by the fusion scientists designing magnetic confinement systems in the 20th century. It describes theory, experiments and simulations in a unified and up-to-date presentation of the issues of achieving nuclear fusion power.
Download or read book Particle Acceleration During Magnetic Reconnection in a Low-beta Pair Plasma written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasma energization through magnetic reconnection in the magnetically dominated regime featured by low plasma beta ([beta]=8[pi]nkT0/B2 “1) and/or high magnetization ([sigma]=B2/(4[pi]nmc2)”1) is important in a series of astrophysical systems such as solar flares, pulsar wind nebula, and relativistic jets from black holes. In this paper, we review the recent progress on kinetic simulations of this process and further discuss plasma dynamics and particle acceleration in a low-[beta] reconnection layer that consists of electron-positron pairs. We also examine the effect of different initial thermal temperatures on the resulting particle energy spectra. While earlier papers have concluded that the spectral index is smaller for higher [sigma], our simulations show that the spectral index approaches p = 1 for sufficiently low plasma [beta], even if [sigma]~1. Since this predicted spectral index in the idealized limit is harder than most observations, it is important to consider effects that can lead to a softer spectrum such as open boundary simulations. Here, we also remark that the effects of three-dimensional reconnection physics and turbulence on reconnection need to be addressed in the future.
Author : Adam Stanier
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (89 download)
Download or read book Magnetic Reconnection and Particle Acceleration in Semi-collisional Plasmas written by Adam Stanier and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 030916608X
Total Pages : 96 pages
Book Rating : 4.3/5 (91 download)
Download or read book Plasma Physics of the Local Cosmos written by National Research Council and published by National Academies Press. This book was released on 2004-05-06 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Solar and space physics is the study of solar system phenomena that occur in the plasma state. Examples include sunspots, the solar wind, planetary magnetospheres, radiation belts, and the aurora. While each is a distinct phenomenon, there are commonalities among them. To help define and systematize these universal aspects of the field of space physics, the National Research Council was asked by NASA's Office of Space Science to provide a scientific assessment and strategy for the study of magnetized plasmas in the solar system. This report presents that assessment. It covers a number of important research goals for solar and space physics. The report is complementary to the NRC report, The Sun to the Earthâ€"and Beyond: A Decadal Research Strategy for Solar and Space Physics, which presents priorities and strategies for future program activities.
Author : Dieter Biskamp
Publisher : Cambridge University Press
ISBN 13 : 9780521020367
Total Pages : 404 pages
Book Rating : 4.0/5 (23 download)
Download or read book Magnetic Reconnection in Plasmas written by Dieter Biskamp and published by Cambridge University Press. This book was released on 2005-09-29 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides a comprehensive introduction to the theory of magnetic field line reconnection, now a major subject in plasma physics. Biskamp focuses on the various reconnection mechanisms dominating magnetic processes under the different plasma conditions encountered in astrophysical systems and in laboratory fusion devices. The book consists of two major parts: the first deals with the classical resistive approach, while the second presents an overview of weakly collisional or collisionless plasmas. Applications primarily concern astrophysical phenomena and dynamo theory, with emphasis on the solar and geodynamo, as well as magnetospheric substorms--the most spectacular reconnection events in the magnetospheric plasma. The theoretical procedures and results also apply directly to reconnection processes in laboratory plasmas, in particular the sawtooth phenomenon in tokamaks. The book will be of value to graduate students and researchers interested in magnetic processes both in astrophysical and laboratory plasma physics.
Download or read book Particle Acceleration and Plasma Dynamics During Magnetic Reconnection in the Magnetically Dominated Regime written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Masaaki Yamada
Publisher : Princeton University Press
ISBN 13 : 069118013X
Total Pages : 312 pages
Book Rating : 4.6/5 (911 download)
Download or read book Magnetic Reconnection written by Masaaki Yamada and published by Princeton University Press. This book was released on 2022-04-19 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: The essential introduction to magnetic reconnection—written by a leading pioneer of the field Plasmas comprise more than 99 percent of the visible universe; and, wherever plasmas are, magnetic reconnection occurs. In this common yet incompletely understood physical process, oppositely directed magnetic fields in a plasma meet, break, and then reconnect, converting the huge amounts of energy stored in magnetic fields into kinetic and thermal energy. In Magnetic Reconnection, Masaaki Yamada offers an illuminating synthesis of modern research and advances on this important topic. Magnetic reconnection produces such phenomena as solar flares and the northern lights, and occurs in nuclear fusion devices. A better understanding of this crucial cosmic activity is essential to comprehending the universe and varied technological applications, such as satellite communications. Most of our knowledge of magnetic reconnection comes from theoretical and computational models and laboratory experiments, but space missions launched in recent years have added up-close observation and measurements to researchers’ tools. Describing the fundamental physics of magnetic reconnection, Yamada links the theory with the latest results from laboratory experiments and space-based observations, including the Magnetic Reconnection Experiment (MRX) and the Magnetospheric Multiscale (MMS) Mission. He concludes by considering outstanding problems and laying out a road map for future research. Aimed at advanced graduate students and researchers in plasma astrophysics, solar physics, and space physics, Magnetic Reconnection provides cutting-edge information on a vital area of scientific investigation.
Author :
Publisher :
ISBN 13 :
Total Pages : 189 pages
Book Rating : 4.:/5 (935 download)
Download or read book Current Sheet Dynamics During Driven Magnetic Reconnection written by and published by . This book was released on 2015 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acceleration During Magnetic Reconnection written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The presentation begins with colorful depictions of solar x-ray flares and references to pulsar phenomena. Plasma reconnection is complex, could be x-point dominated or turbulent, field lines could break due to either resistivity or non-ideal effects, such as electron pressure anisotropy. Electron acceleration is sometimes observed, and sometimes not. One way to study this complex problem is to have many examples of the process (reconnection) and compare them; the other way is to simplify and come to something robust. Ideal MHD (E=0) turbulence driven by magnetic energy is assumed, and the first-order acceleration is sought. It is found that dissipation in big (length>100 ion skin depths) current sheets is universal and independent on microscopic resistivity and the mean imposed field; particles are regularly accelerated while experiencing curvature drift in flows driven by magnetic tension. One example of such flow is spontaneous reconnection. This explains hot electrons with a power-law tail in solar flares, as well as ultrashort time variability in some astrophysical sources.
Author : Joseph Olson
Publisher :
ISBN 13 :
Total Pages : 135 pages
Book Rating : 4.:/5 (117 download)
Download or read book Exploring Driven, High Lundquist Number Magnetic Reconnection in the Laboratory written by Joseph Olson and published by . This book was released on 2020 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new experiment for studying magnetic reconnection, the process in a magnetized plasma which allows for the magnetic topology to change rapidly, has been constructed and is currently in operation. Magnetic reconnection is of great interest because while it occurs in localized regions, it influences the macroscopic behavior of many plasmas systems including space and astrophysical plasmas as well as laboratory experiments. An emerging frontier of reconnection research has been the study of collisionless magnetic reconnection in Earth's magnetosphere. Extensive studies in theory, simulation, and spacecraft observations have been successful in developing our understanding of these systems while there are few laboratory experiments capable of exploring similar parameters. The Terrestrial Reconnection Experiment (TREX) marks the first experiment dedicated to the study of these kinetic effects in low collisional plasmas. In operation at the Wisconsin Plasma Physics Laboratory (WiPPL), TREX has undergone multiple hardware upgrades in order to access new regimes of reconnection. The experiment consists of a large spherical vacuum vessel housing internal reconnection drive coils that force magnetic reconnection with a background plasma. This generates a strong toroidal current layer near the coils that is driven inward to the central axis as reconnection proceeds. An extensive suite of magnetic and electrostatic diagnostics allow for fine measurement of the local and global dynamics of the system. Two important results are reported in this thesis. The first is the direct observation of the spontaneous formation of plasmoids, or magnetic islands, which occur at the electron scale inside the ion diffusion region. The experiments show that the plasmoid instability, a fundamental ingredient in models for electron energization and increased reconnection dynamics, is active at a smaller system size than predicted by theory. The second investigation examines the dynamics of strongly driven magnetic reconnection in which a shock interface between the supersonically driven plasma inflow and a region of magnetic flux pileup develops. The observations elucidate the role of shock formation in permitting the normalized reconnection rate to self regulate to a fixed value.
Author : Toshi Tajima
Publisher : CRC Press
ISBN 13 : 0429981104
Total Pages : 428 pages
Book Rating : 4.4/5 (299 download)
Download or read book Computational Plasma Physics written by Toshi Tajima and published by CRC Press. This book was released on 2018-03-14 with total page 428 pages. Available in PDF, EPUB and Kindle. Book excerpt: The physics of plasmas is an extremely rich and complex subject as the variety of topics addressed in this book demonstrates. This richness and complexity demands new and powerful techniques for investigating plasma physics. An outgrowth from his graduate course teaching, now with corrections, Tajima's text provides not only a lucid introduction to computational plasma physics, but also offers the reader many examples of the way numerical modeling, properly handled, can provide valuable physical understanding of the nonlinear aspects so often encountered in both laboratory and astrophysical plasmas. Included here are computational methods for modern nonlinear physics as applied to hydrodynamic turbulence, solitons, fast reconnection of magnetic fields, anomalous transports, dynamics of the sun, and more. The text contains examples of problems now solved using computational techniques including those concerning finite-size particles, spectral techniques, implicit differencing, gyrokinetic approaches, and particle simulation.
Author : Sergio Ortolani
Publisher : World Scientific
ISBN 13 : 9814505838
Total Pages : 201 pages
Book Rating : 4.8/5 (145 download)
Download or read book The Magnetohydrodynamics Of Plasma Relaxation written by Sergio Ortolani and published by World Scientific. This book was released on 1993-03-16 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gives a concise description of the phenomenon of plasma relaxation from the point of view of resistive magnetohydrodynamic (MHD) theory. Magnetized plasmas relax when they seek their natural state of lowest energy subject to certain topological constraints imposed by the magnetic field. Relaxation may be fast and dynamic or slow and gradual depending on the external environment in which the magnetoplasma system evolves. Relaxation occurs throughout the universe and may describe such diverse phenomena as dynamos, solar flares, and the operation of magnetic fusion energy experiments. This book concentrates on the dynamic, rather than variational aspects of relaxation. While the processes described are general, the book focuses on the reversed-field pinch experiment as a paradigm for plasma relaxation and dynamo action. Examples from other branches of plasma physics are also discussed. The authors draw upon their extensive experience in numerical and experimental studies of relaxation.
Author : William Lewis
Publisher : Springer
ISBN 13 : 9781461430469
Total Pages : 0 pages
Book Rating : 4.4/5 (34 download)
Download or read book Magnetic Reconnection written by William Lewis and published by Springer. This book was released on 2012-03-18 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume covers different aspects of recent theoretical and observational work on magnetic reconnection, a fundamental plasma-physical process by which energy stored in magnetic field is converted, often explosively, into heat and kinetic energy. This collection of papers from the fields of solar and space physics, astrophysics, and laboratory plasma physics is especially timely in view of NASA's upcoming Magnetospheric Multiscale mission, which will use Earth's magetosphere as a laboratory to test, through in-situ measurement of the plasma, energetic particles, and electric and magnetic fields, the various and sometimes competing models and theories of magnetic reconnection. This volume is aimed at researchers in solar physics, magnetospheric physics and plasma physics. Previously published in Space Science Reviews journal, Vol. 160/1-4, 2011.
Author : May-Britt Kallenrode
Publisher : Springer Science & Business Media
ISBN 13 : 3662036533
Total Pages : 369 pages
Book Rating : 4.6/5 (62 download)
Download or read book Space Physics written by May-Britt Kallenrode and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Observations and physical concepts are interwoven to give basic explanations of phenomena and also show the limitations in these explanations and identify some fundamental questions. Compared to conventional plasma physics textbooks this book focuses on the concepts relevant in the large-scale space plasmas. It combines basic concepts with current research and new observations in interplanetary space and in the magnetospheres. Graduate students and young researchers starting to work in this special field of science, will find the numerous references to review articles as well as important original papers helpful to orientate themselves in the literature. Emphasis is on energetic particles and their interaction with the plasma as examples for non-thermal phenomena, shocks and their role in particle acceleration as examples for non-linear phenomena. This second edition has been updated and extended. Improvements include: the use of SI units; addition of recent results from SOHO and Ulysses; improved treatment of the magnetosphere as a dynamic phenomenon; text restructured to provide a closer coupling between basic physical concepts and observed complex phenomena.
Author : Francesco Porcelli
Publisher : Elsevier
ISBN 13 : 9780080931913
Total Pages : 0 pages
Book Rating : 4.9/5 (319 download)
Download or read book Introduction to Magnetic Reconnection in Plasmas written by Francesco Porcelli and published by Elsevier. This book was released on 2019-03-01 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plasmas are ionized gases, composed of free electrons and positively charged atomic nuclei, whose collective behaviour is strongly influenced by the presence of magnetic fields. Plasmas make up more than 99% of the matter in the Universe. Familiar examples are stars, flames, lightning, and auroras borealis. One practical plasma application is the search for controlled thermonuclear fusion to be used as a new and virtually inexhaustible energy source. Magnetic reconnection is a process whereby the plasma changes its spatial configuration by relaxing the magnetic field that confines it. Relaxation often occurs spontaneously and in explosive ways. A notable example is solar flares, which release streams of charged particles in Space, causing electro-magnetic storms and black out of satellite communications in the Earth magnetosphere. The physics of magnetic reconnection shares many common aspects with phenomena in ordinary fluids, such as vortex cell formation and merging and the path to turbulent behavior. An Introduction to magnetic Reconnection in Plasmas provides an introduction to the theory of magnetic reconnection while emphasizing basic mathematical tools and concepts. It is addressed to senior undergraduate and graduate students, with starred sections for the advanced reader. Plasma specialists who are not already acquainted with the mathematical formalism of magnetic reconnection as well as scientists who have an interest in Astrophysics, Fluid-Dynamics and Nonlinear Physics will also find the book valuable and informative. Reading the book will enable both students and specialists to tackle the vast body of scientific literature on the subject. Provides in-depth coverage of plasma physics and magnetic reconnection Includes starred sections for the advanced reader, and exercises for students Clear and pedagogical writing style with many helpful bibliographical references Mathematics of magnetic reconnection clearly explained
