Download or read book Electromagnetic Fluctuations During Fast Reconnection in a Laboratory Plasma written by Hantao Ji and published by . This book was released on 2003 with total page 115001 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electromagnetic Fluctuations During Fast Reconnection in a Laboratory Plasma written by Hantao Ji and published by . This book was released on 2003 with total page 115001 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three dimensional Impulsive Magnetic Reconnection in a Laboratory Plasma written by and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Impulsive, local, 3-D reconnection is identified for the first time in a laboratory current sheet. The events observed in the Magnetic Reconnection Experiment (MRX) are characterized by large local gradients in the third direction and cannot be explained by 2-D models. Detailed measurements show that the ejection of flux rope structures from the current sheet plays a key role in these events. By contrast, even though electromagnetic fluctuations in the lower hybrid frequency range are also observed concurrently with the impulsive behavior, they are not the key physics responsible. A qualitative, 3-D, two-fluid model is proposed to explain the observations. The experimental results may be particularly applicable to space and astrophysical plasmas where impulsive reconnection occurs.
Download or read book Study of Local Reconnection Physics in a Laboratory Plasma written by Hantao Ji and published by . This book was released on 2001 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Magnetic Reconnection written by Walter Gonzalez and published by Springer. This book was released on 2016-02-22 with total page 549 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book provides an overview of recent research highlights in the main areas of application of magnetic reconnection (MR), including planetary, solar and magnetospheric physics and astrophysics. It describes how research on magnetic reconnection, especially concerning the Earth's magnetosphere, has grown extensively due to dedicated observations from major satellite missions such as Cluster, Double Star and Themis. The accumulated observations from these missions are being supplemented by many theoretical and modelling efforts, for which large scale computer facilities are successfully being used, and the theoretical advances are also covered in detail. Opening with an introductory discussion of some fundamental issues related to magnetic reconnection, subsequent chapters address topics including collisionless magnetic reconnection, MHD structures in 3D reconnection, energy conversion processes, fast reconnection mediated by plasmoids, rapid reconnection and magnetic field topology. Further chapters consider specific areas of application such as magnetospheric dayside and tail reconnection, comparative reconnection in planetary systems and reconnection in astrophysical systems. The book offers insight into discussions about fundamental concepts and key aspects of MR, access to the full set of applications of MR as presently known in space physics and in astrophysics, and an introduction to a new related area of study dealing with the annihilation of quantum magnetic fluxes and its implications in the study on neutron star activity. The book is aimed primarily at students entering the field, but will also serve as a useful reference text for established scientists and senior researchers.
Download or read book Fast Magnetic Reconnection written by and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent developments in experimental and theoretical studies of magnetic reconnection hold promise for providing solutions to outstanding problems in laboratory and space plasma physics. Examples include sawtooth crashes in tokamaks, substorms in the Earth's Magnetosphere, eruptive solar flares, and more recently, fast reconnection in laser-produced high energy density plasmas. In each of these examples, a common and long-standing challenge has been to explain why fast reconnection proceeds rapidly from a relatively quiescent state. In this talk, we demonstrate the advantages of viewing these problems and their solutions from a common perspective. We focus on some recent, surprising discoveries regarding the role of secondary plasmoid instabilities of thin current sheets. Nonlinearly, these instabilities lead to fast reconnection rates that are very weakly dependent on the Lundquist number of the plasma.
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 Microphysics of Cosmic Plasmas written by André Balogh and published by Springer Science & Business Media. This book was released on 2014-01-15 with total page 631 pages. Available in PDF, EPUB and Kindle. Book excerpt: Presents a comprehensive review of physical processes in astrophysical plasmas. This title presents a review of the detailed aspects of the physical processes that underlie the observed properties, structures and dynamics of cosmic plasmas. An assessment of the status of understanding of microscale processes in all astrophysical collisionless plasmas is provided. The topics discussed include turbulence in astrophysical and solar system plasmas as a phenomenological description of their dynamic properties on all scales; observational, theoretical and modelling aspects of collisionless magnetic reconnection; the formation and dynamics of shock waves; and a review and assessment of microprocesses, such as the hierarchy of plasma instabilities, non-local and non-diffusive transport processes and ionisation and radiation processes. In addition, some of the lessons that have been learned from the extensive existing knowledge of laboratory plasmas as applied to astrophysical problems are also covered. This volume is aimed at graduate students and researchers active in the areas of cosmic plasmas and space science. Originally published in Space Science Reviews journal, Vol. 278/2-4, 2013.
Download or read book Study of Driven Magnetic Reconnection in a Laboratory Plasma written by Masaaki Yamada and published by . This book was released on 1997 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reconnection of Magnetic Fields written by J. Birn and published by Cambridge University Press. This book was released on 2007-01-04 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The reconnection of magnetic fields is one of the most fascinating processes in plasma physics, responsible for phenomena such as solar flares and magnetospheric substorms. The concept of reconnection has developed through recent advances in exploring the magnetospheres of the Sun and Earth through theory, computer simulations and spacecraft observations. The great challenge in understanding it stems from balancing the large volumes of plasma and magnetic fields involved with the energy release with the physical mechanism which relies on the strongly localized behavior of charged particles. This book, edited by and with contributions from leading scientists in the field, provides a comprehensive overview of recent theoretical and observational findings concerning the physics of reconnection and the complex structures that may give rise to, or develop from, reconnection. It is intended for researchers and graduate students interested in the dynamics of plasmas.
Download or read book Experimental Verification of the Hall Efect During Magnetic Reconnection in a Laboratory Plasma written by Yang Ren and published by . This book was released on 2005 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies of Non MHD Effects During Magnetic Reconnection in a Laboratory Plasma written by Yang Ren and published by . This book was released on 2007 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation we present studies of non-MHD effects, the Hall effect and magnetic fluctuations, during magnetic reconnection in the laboratory plasma of the Magnetic Reconnection Experiment (MRX). The Hall effect is studied by measuring its key signature, an out-of-plane quadrupole magnetic field, with magnetic probe arrays whose spatial resolution is on the order of the electron skin depth. The in-plane electron flow is calculated from out-of-plane magnetic field measurements. The measured in-plane electron flow and predictions from numerical simulations are in good agreement. The electron diffusion region is identified by measuring the electron outflow channel. The width of the electron diffusion region scales with the electron skin depth, and the electron outflow velocity scales with the electron Alfven velocity. In contrast to simulations, the presence of classical and anomalous dissipation broadens the electron diffusion region and slows the electron outflow. The electron outflow flux is independent of the width of the electron diffusion region. The ions, as measured by a Mach probe, have a much wider outflow channel than the electrons, and their outflow is much slower than the electron outflow everywhere in the electron diffusion region. The separatrices are identified by tracing the ridges of the measured quadrupole field. The angle between the two separatrices defines the aspect ratio of the ion diffusion region, which shows a positive correlation with the aspect ratio of the electron diffusion region. Further measurements show that, in the collisionless regime, the Hall effect balances the reconnecting electric field at the electron diffusion region edge and correlates with the measured effective resistivity. Magnetic fluctuations and the quadrupole field are simultaneously measured in the diffusion region during collisionless magnetic reconnection. The presence of both non-MHD effects shows that the development of plasma turbulence, a three-dimensional feature, does not disrupt the generation of the quadrupole field, a two-dimensional feature. Time-frequency analysis shows that these magnetic fluctuations have spectral peaks around the lower-hybrid frequency. The time characteristics of the fluctuations reveal their impulsive nature. The location of peak fluctuations is found to be at the current sheet center at three different positions along the outflow direction.
Download or read book Geospace Electromagnetic Waves and Radiation written by James W. LaBelle and published by Springer Science & Business Media. This book was released on 2006-02-21 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: The contributions gathered in this volume provide introductions to current problems in geospace electromagnetic radiation, guides to the associated literature and tutorial reviews of the relevant space physics. Students and scientists working on various aspects of the terrestrial aurora or magnetospheric and near-Earth heliospheric high-frequency waves will find this volume an indispensable companion for their studies.
Download or read book Electromagnetic Fluctuations in Plasma written by Alekseĭ Grigorʹevich Sitenko and published by . This book was released on 1967 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Plasmas in the Laboratory and in the Universe written by Giuseppe Bertin and published by American Institute of Physics. This book was released on 2004-03-26 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: The volume illustrates the State of the art and new directions in plasma physics, space physics, and astrophysics. It covers several hot topics of interdisciplinary interest where progress is made by the use of joint expertise. It summarizes an unusually lively symposium that has gathered world experts with a broad spectrum of research interests. Interdisciplinary meetings at the border between plasma physics and astrophysics are becoming increasingly important. In the recent past, several proceedings volumes have been devoted to astrophysical plasmas. This volume has the unique feature of being professional but not specialized, because it covers an unusually broad spectrum of topics under the common theme of the study of complex and collective phenomena in macroscopic systems, from the scale of laboratory plasma experiments to the scale of the universe. Included are: - basic plasma processes - space plasmas, planetary plasmas, and the heliosphere - solar and stellar plasmas - plasmas around compact objects - plasmas in galaxies - plasmas in clusters of galaxies - cosmological plasmas - testing plasma astrophysics in the laboratory
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 403 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.
Download or read book Low Frequency Waves in Space Plasmas written by Andreas Keiling and published by John Wiley & Sons. This book was released on 2016-04-04 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt: Low-frequency waves in space plasmas have been studied for several decades, and our knowledge gain has been incremental with several paradigm-changing leaps forward. In our solar system, such waves occur in the ionospheres and magnetospheres of planets, and around our Moon. They occur in the solar wind, and more recently, they have been confirmed in the Sun’s atmosphere as well. The goal of wave research is to understand their generation, their propagation, and their interaction with the surrounding plasma. Low-frequency Waves in Space Plasmas presents a concise and authoritative up-to-date look on where wave research stands: What have we learned in the last decade? What are unanswered questions? While in the past waves in different astrophysical plasmas have been largely treated in separate books, the unique feature of this monograph is that it covers waves in many plasma regions, including: Waves in geospace, including ionosphere and magnetosphere Waves in planetary magnetospheres Waves at the Moon Waves in the solar wind Waves in the solar atmosphere Because of the breadth of topics covered, this volume should appeal to a broad community of space scientists and students, and it should also be of interest to astronomers/astrophysicists who are studying space plasmas beyond our Solar System.
