Theory of anomalous transport in H-mode plasmas
Author | : Sanae Inoue Itoh |
Publisher | : |
Total Pages | : 16 |
Release | : 1993 |
Genre | : |
ISBN | : |
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Author | : Sanae Inoue Itoh |
Publisher | : |
Total Pages | : 16 |
Release | : 1993 |
Genre | : |
ISBN | : |
Author | : Radu Balescu |
Publisher | : CRC Press |
Total Pages | : 498 |
Release | : 2005-04-01 |
Genre | : Science |
ISBN | : 9781420034684 |
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 | : William B. Pardo |
Publisher | : |
Total Pages | : 360 |
Release | : 1966 |
Genre | : Science |
ISBN | : |
Author | : T. Stringer |
Publisher | : Elsevier |
Total Pages | : 441 |
Release | : 2013-10-22 |
Genre | : Science |
ISBN | : 1483139433 |
Plasma Transport, Heating and MHD Theory provides information pertinent to the theory of plasma transport, heating, and MHD. This book describes the resistive steady states of elliptical cross-section plasmas. Organized into five parts encompassing 28 chapters, this book begins with an overview of the effects due to instabilities excited in the low-density regime of tokamaks by runaway electrons via the cyclotron resonance. This text then examines the formulation of transport theory, which is applied to transport in tokamak due to trapped-particle instabilities in the quasi-linear stage. Other chapters consider the stability of the boundary regions of gas insulated plasmas. This book discusses as well the zero-dimensional or point model of the Elmo Bumpy Torus (EBT) experiment in which spatial dependences are eliminated by replacing all plasma gradients by characteristic scale lengths equal to the plasma minor radius. The final chapter deals with anomalous transport theory. This book is a valuable resource for plasma physicists.
Author | : |
Publisher | : |
Total Pages | : 23 |
Release | : 1992 |
Genre | : |
ISBN | : |
Theory based transport simulations of DIII-D, JET, ITER are compared to experimental data using a combination of anamolous transport models. The Multiple-mode Transport Model is calibrated to a give set of L-mode and H-mode discharges with an emphasis on testing the adequacy of anomalous flux contributions from drift/[eta][sub i] and resistive ballooning mode theories. A survey of possible additions and/or alternatives to the model from recent theories on neoclassical MHD effects, hot ion modes, circulating electron modes, and high-m tearing modes is also included.
Author | : Kimitaka Itoh |
Publisher | : |
Total Pages | : 13 |
Release | : 1992 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 704 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Author | : Kimitaka Itoh |
Publisher | : |
Total Pages | : 10 |
Release | : 1994 |
Genre | : |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 11 |
Release | : 1995 |
Genre | : |
ISBN | : |
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 | : G. Becker |
Publisher | : |
Total Pages | : 8 |
Release | : 1985 |
Genre | : |
ISBN | : |