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Author : Hans Nordman
Publisher :
ISBN 13 : 9789170324352
Total Pages : 32 pages
Book Rating : 4.3/5 (243 download)
Download or read book Turbulence and Anomalous Transport in Toroidal Plasmas written by Hans Nordman and published by . This book was released on 1989 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Radu Balescu
Publisher : CRC Press
ISBN 13 : 9781420034684
Total Pages : 498 pages
Book Rating : 4.0/5 (346 download)
Download or read book Aspects of Anomalous Transport in Plasmas written by Radu Balescu and published by CRC Press. This book was released on 2005-04-01 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anomalous transport is a ubiquitous phenomenon in astrophysical, geophysical and laboratory plasmas; and is a key topic in controlled nuclear fusion research. Despite its fundamental importance and ongoing research interest, a full understanding of anomalous transport in plasmas is still incomplete, due to the complexity of the nonlinear phenomena involved. Aspects in Anomalous Transport in Plasmas is the first book to systematically consider anomalous plasma transport theory and provides a unification of the many theoretical models by emphasizing interrelations between seemingly different methodologies. It is not intended as a catalogue of the vast number of plasma instabilities leading to anomalous transport; instead it chooses a number of these and emphasizes the aspects specifically due to turbulence. After a brief introduction, the microscopic theory of turbulence is discussed, including quasilinear theory and various aspects of renormalization methods, which leads to an understanding of resonance broadening, mode coupling, trajectory correlation and clumps. The second half of the book is devoted to stochiastic tramsport, using methods based on the Langevin equations and on Random Walk theory. This treatment aims at going beyond the traditional limits of weak turbulence, by introducing the recently developed method of decorrelation trajectories, and its application to electrostatic turbulence, magnetic turbulence and zonal flow generation. The final chapter includes very recent work on the nonlocal transport phenomenon.
Author : H. Sugama
Publisher :
ISBN 13 :
Total Pages : 50 pages
Book Rating : 4.:/5 (258 download)
Download or read book Neoclassical and Anomalous Transport in Axisymmetric Toroidal Plasmas with Electrostatic Turbulence written by H. Sugama and published by . This book was released on 1995 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Anomalous Transport in Toroidal Plasmas. Annual Report, [June 1, 1990--May 31, 1991]. PDF Online Free](https://books.google.com/books/content/images/frontcover/q-TujwEACAAJ?fife=w200-h370)
Author :
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (685 download)
Download or read book Anomalous Transport in Toroidal Plasmas. Annual Report, [June 1, 1990--May 31, 1991]. written by and published by . This book was released on 1991 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have developed a Monte Carlo method to estimate the transport of different groups of particles for plasmas in toroidal geometries. This method can determine the important transport mechanisms driving the anomalous transport by comparing the numerical results with the experimental data. The important groups of particles whose transport can be estimated by this method include runaway electrons, thermal electrons, both passing and trapped diagnostic beam ions etc. The three basic mechanisms driving the anomalous transport are: spatial variation of magnetic field strength, spatial variation of electrostatic potential within the flux surfaces, and the loss of flux surfaces. The equation of motion are obtained from the drift hamiltonian. The equations of motion are developed in the canonical and in the non-canonical, practical co-ordinates as well. The effects of collisions are represented by appropriate stochastic changes in the constants of motion at each time-step. Here we present the results of application of this method to three cases: superathermal alphas in the rippled field of tokamaks, motion in the magnetic turbulence of takapole II, and transport in the stochastic fields of ZT40. This work is supported by DOE OFE and ORAU HBCU program.
Author : A. PUNJABI
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (898 download)
Download or read book ANOMALOUS TRANSPORT IN TOROIDAL PLASMAS. written by A. PUNJABI and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Anomalous Transport in Toroidal Plasmas. Final Progress Report written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Anomalous transport in toroidal plasmas arises from the presence of more complicated magnetic and electric fields than are required by the macroscopic equilibrium of the plasma. If one knew these fields, then the transport coefficients, calculated by classical methods, would be correct except for the direct transport of energy by fields (which is usually considered negligible). The limitation of this procedure is the lack of knowledge of the field perturbations, but there are a number of features that are generally accepted whether the perturbations are due to microinstabilities or due to macroscopic effects such as tearing modes. In particular, the frequencies and the wave numbers of perturbations satisfy[omega]*[approx-lt][omega], k[sub[perpendicular]][rho][sub i][approx-lt] 1, and k[sub[parallel]][rho][sub i][much-lt] 1 which imply that the magnetic moments of both the ions and the electrons are conserved and that the particle trajectories obey drift equations. The drift equations imply that if magnetic surfaces exist, particles can cross a surface only if there is a spatial variation in the field strength or the electric potential in the surface. If surfaces fail to exist, then particles can also cross the toroidal flux surfaces by moving along the field lines. Here the authors develop Monte Carlo codes to study anomalous transport in ZT-40 and TOKAPOLE 2.
Author : B. Coppi
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (253 download)
Download or read book Fluctuations, Anomalous Transport, and Particle Scattering in Toroidal Plasmas written by B. Coppi and published by . This book was released on 1973 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William B. Pardo
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.F/5 ( download)
Download or read book Plasma Instabilities and Anomalous Transport written by William B. Pardo and published by . This book was released on 1966 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : A. I. Smolyakov
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (979 download)
Download or read book Anomalous Transport Equations in Toroidal Plasmas written by A. I. Smolyakov and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduced transport equations for a toroidal plasma with fluctuations are derived. These equations include the effects of both anomalous and standard neoclassical transport, and allow clarification of the structure of convective fluxes caused by electrostatic and magnetic fluctuations. Special attention is paid to the combined effects of fluctuations and toroidicity on the transport. The formulation retains the effects of a magnetic field inhomogeneity on the anomalous transport. It is shown that phase space diffusion caused by the gradient in the equilibrium magnetic field appears as a pinch flux in the real space.
Author : Kimitaka Itoh
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (355 download)
Download or read book Theory of Anomalous Transport in Toroidal Helical Plasmas written by Kimitaka Itoh and published by . This book was released on 1992 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (685 download)
Download or read book Anomalous Transport Equations in Toroidal Plasmas written by and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reduced transport equations for a toroidal plasma with fluctuations are derived. These equations include the effects of both anomalous and standard neoclassical transport, and allow clarification of the structure of convective fluxes caused by electrostatic and magnetic fluctuations. Special attention is paid to the combined effects of fluctuations and toroidicity on the transport. The formulation retains the effects of a magnetic field inhomogeneity on the anomalous transport. It is shown that phase space diffusion caused by the gradient in the equilibrium magnetic field appears as a pinch flux in the real space.
Author : T. E. Stringer
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (593 download)
Download or read book Anomalous Transport in Toroidal Confinement written by T. E. Stringer and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kimitaka Itoh
Publisher :
ISBN 13 :
Total Pages : 10 pages
Book Rating : 4.:/5 (257 download)
Download or read book Anomalous Transport Theory for Toroidal Helical Plasmas written by Kimitaka Itoh and published by . This book was released on 1994 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 11 pages
Book Rating : 4.:/5 (685 download)
Download or read book Nonlinear Phenomena, Turbulence and Anomalous Transport in Fusion Plasmas written by and published by . This book was released on 1995 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The nonlinear nature of the plasma turbulence, as measured by bicoherence analysis, has been studied in stellarator (ATF and W7AS) and tokamak (PBXM) devices. In ATF, little nonlinear interaction is found in the scrape-off layer region whereas the strength of the coupling is enhanced in the edge plasma region where the level of fluctuations is consistent with the theoretical expectations from resistive interchange modes. In W7AS the level of bicoherence is significantly smaller than in ATF. The comparison ATF/W7AS/PBXM suggest the important role of the magnetic shear to determine nonlinear behavior of the turbulence. The level of bicoherence also depends on the plasma conditions: in particular, it increases at the H-mode transition. The comparison between the nonlinear behavior of the turbulence in tokamaks and stellarators allows experimental verification of theoretical turbulence models.
Author : Walter Allen Guttenfelder
Publisher :
ISBN 13 :
Total Pages : 224 pages
Book Rating : 4.:/5 (89 download)
Download or read book Measurements and Modeling of Turbulent Transport in the HSX Stellarator written by Walter Allen Guttenfelder and published by . This book was released on 2008 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : C Wendell Horton, Jr
Publisher : #N/A
ISBN 13 : 9813225904
Total Pages : 522 pages
Book Rating : 4.8/5 (132 download)
Download or read book Turbulent Transport In Magnetized Plasmas (Second Edition) written by C Wendell Horton, Jr and published by #N/A. This book was released on 2017-07-21 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a few seconds with large machines, scientists and engineers have now created the fusion power of the stars in the laboratory and at the same time find the rich range of complex turbulent electromagnetic waves that transport the plasma confinement systems. The turbulent transport mechanisms created in the laboratory are explained in detail in the second edition of 'Turbulent Transport in Magnetized Plasmas' by Professor Horton.The principles and properties of the major plasma confinement machines are explored with basic physics to the extent currently understood. For the observational laws that are not understood — the empirical confinement laws — offering challenges to the next generation of plasma students and researchers — are explained in detail. An example, is the confinement regime — called the 'I-mode' — currently a hot topic — is explored.Numerous important problems and puzzles for the next generation of plasma scientists are explained. There is growing demand for new simulation codes utilizing the massively parallel computers with MPI and GPU methods. When the 20 billion dollar ITER machine is tested in the 2020ies, new theories and faster/smarter computer simulations running in near real-time control systems will be used to control the burning hydrogen plasmas.
Author :
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (227 download)
Download or read book Theoretical and Numerical Study of Anomalous Turbulent Transport in Plasmas written by and published by . This book was released on 1991 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical and computational analysis of particle transport in a plasma turbulence was carried out. Particle behavior was investigated by test particle simulations in different types of plasma turbulence, including drift wave turbulence, ion acoustic turbulence and Langmuir turbulence. Resonance broadening in real space around mode rational surface was confirmed in drift wave turbulence. Nonresonant interaction of waves and particles were studied in ion acoustic turbulence. Resonance broadening in velocity space was found as a result of non-Markovian process in Langmuir turbulence. A semiclassical quantum plasma approach was also applied to plasma turbulence. Some instabilities in toroidal geometry were studied as eigen value problems.
