Download or read book Particle Simulation Study of Driven Magnetic Reconnection in a Collisionless Plasma written by Ritoku Horiuchi and published by . This book was released on 1994 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 0 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.
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 Study of Driven Magnetic Reconnection in a Laboratory Plasma written by and published by . This book was released on 1998 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Magnetic Reconnection Experiment (MRX) has been constructed to investigate the fundamental physics of magnetic reconnection in a well controlled laboratory setting. This device creates an environment satisfying the criteria for a magnetohydrodynamic (MHD) plasma (S ≫ 1, ?{sub i} ≪ L). The boundary conditions can be controlled externally, and experiments with fully three-dimensional reconnection are now possible. In the initial experiments, the effects of the third vector component of reconnecting fields have been studied. Two distinctively different shapes of neutral sheet current layers, depending on the third component, are identified during driven magnetic reconnection. Without the third component (anti-parallel or null-helicity reconnection), a thin double-Y shaped diffusion region is identified. A neutral sheet current profile is measured accurately to be as narrow as order ion gyro-radius. In the presence of an appreciable third component (co-helicity reconnection), an O-shaped diffusion region appears and grows into a spheromak configuration.
Download or read book High Performance Computing written by Jesus Labarta and published by Springer. This book was released on 2008-01-19 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed joint post-conference proceedings of the 6th International Symposium on High-Performance Computing, ISHPC 2005, held in, Japan, in 2005. It also includes the refereed post-proceedings of the First International Workshop on Advanced Low Power Systems 2006, ALPS2006, and some from the Workshop on Applications for PetaFLOPS Computing, APC 2005. A total of 42 papers were carefully selected from 76 submissions, covering a huge range of topics.
Download or read book Plasma Astrophysics Part II written by Boris V. Somov and published by Springer Science & Business Media. This book was released on 2007-12-31 with total page 861 pages. Available in PDF, EPUB and Kindle. Book excerpt: This illustrated monograph explores the fundamentals, current practice, and theoretical perspectives of modern plasma astrophysics. The opening part covers basic principles and practical tools for understanding and working with plasma astrophysics. The second section examines the physics of magnetic reconnection and flares of electromagnetic origin in space plasmas in the solar system, and more. Designed mainly for professional researchers, it will be useful to graduate students in space sciences and geophysics.
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 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 Energy Research Abstracts written by and published by . This book was released on 1994-12 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Plasma Astrophysics Part I written by Boris V. Somov and published by Springer Science & Business Media. This book was released on 2012-08-31 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: This two-part book is devoted to classic fundamentals and current practices and perspectives of modern plasma astrophysics. This first part uniquely covers all the basic principles and practical tools required for understanding and work in plasma astrophysics. More than 25% of the text is updated from the first edition, including new figures, equations and entire sections on topics such as magnetic reconnection and the Grad-Shafranov equation. The book is aimed at professional researchers in astrophysics, but it will also be useful to graduate students in space sciences, geophysics, applied physics and mathematics, especially those seeking a unified view of plasma physics and fluid mechanics.
Download or read book New Frontiers in Collisionless Reconnection written by Samuel Greess and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Magnetic reconnection is a ubiquitous phenomenon throughout the universe, but in terms of proximity, its occurrences at the day-side magnetopause and in the magnetotail are the instances that are closest to Earth both spatially and in importance to human life. At the day-side magnetopause, the solar magnetic field reconnects with the magnetic field of the Earth; these reconnected field lines move to the magnetotail, bringing solar wind plasma with them. Further reconnection at the magnetotail leads to the transfer of these energized particles into the Earth's upper atmosphere. Usually, the result of these incursions is only the ethereal beauty of the auroras (borealis and australis); however, larger quantities of incident plasma can and have had devastating effects on terrestrial and space-based electronic systems. Predicting these geomagnetic storm events depends on an understanding of both how and when large quantities of plasma and magnetic flux are emitted from the Sun (also a reconnection-based event) and how long it will take for these particles to enter the Earth's atmosphere via the magnetopause and magnetotail reconnection processes. To that end, in addition to satellite missions created to measure in situ activity, experiments and simulations here on Earth are studying reconnection in the relevant parameter regimes, particularly in plasmas whose collisionality is low enough to mimic the space environment. One such experiment is the Terrestrial Reconnection EXperiment (TREX), which is based at the University of Wisconsin-Madison as a partner of the Wisconsin Plasma Physics Laboratory (WiPPL) collaborative research facility. TREX is designed to access the kinetic regime, which is typified by thin current layers, anisotropic pressure distributions, and fast reconnection. In conjunction with TREX, the newly developed Cylindrical VPIC (Vectorized Particle-in-Cell) code from Los Alamos National Laboratory has been used to simulate TREX in manner that preserves the experiment's cylindrical symmetry while optimizing computational efficiency. Different modified versions of the basic TREX VPIC setup have been successfully used to confirm and complement experimental findings, as well as to investigate plasma regimes the experiment cannot (presently) reach and to model different proposed TREX drive coil geometries. This thesis will present work from both the TREX laboratory and TREX VPIC simulations, with an emphasis on comparing the measured properties of reconnection in both scenarios and demonstrating how these data align with theoretical predictions about the kinetic reconnection parameter regime. Significant background to the construction and operation of TREX, Cylindrical VPIC, and relevant portions of the WiPPL facility will also be included.
Download or read book Comparative Reconnection Studies at the Sun and in Planetary Magnetospheres written by COSPAR. Scientific Assembly and published by . This book was released on 2002 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Cosmic Plasma Physics written by B.V. Somov and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: This unusual book considers physical principles, starting from the most general ones, and simplifies assumptions, helping students answer two key questions: what approximation is the simplest, but still sufficient for the description of a phenomenon in cosmic plasmas, and how to build an adequate model.
Download or read book ICPP 96 Contributed Papers written by Hideo Sugai and published by . This book was released on 1997 with total page 1154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
