Annual Progress Report. [Linear and Nonlinear Instability Theory]. PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A number of topics in nonlinear and linear instability theory are covered in this report. The nonlinear saturation of the dissipative trapped electron instability is evaluated and its amplitude compares well with existing experimental observations. The nonlinear saturation of the drift cyclotron loss-cone mode is carried out for a variety of empty loss-cone distributions. The saturation amplitude is predicted to be small and stable. An improved linear theory of the collisionless drift instability in sheared magnetic fields yields the surprising result that no instability occurs for a wide range of parameters. Finally, the bump-on-tail calculation is shown to be unchanged by some recent results of Case and Siewart, and a rough time scale is established for the transition from the O'Neil trapping regime to the final time-asymptotic result.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
A number of topics in nonlinear and linear instability theory are covered in this report. The nonlinear saturation of the dissipative trapped electron instability is evaluated and its amplitude compares well with existing experimental observations. The nonlinear saturation of the drift cyclotron loss-cone mode is carried out for a variety of empty loss-cone distributions. The saturation amplitude is predicted to be small and stable. An improved linear theory of the collisionless drift instability in sheared magnetic fields yields the surprising result that no instability occurs for a wide range of parameters. Finally, the bump-on-tail calculation is shown to be unchanged by some recent results of Case and Siewart, and a rough time scale is established for the transition from the O'Neil trapping regime to the final time-asymptotic result.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Research has been carried out in two broad areas, nonlinear saturation of instabilities in collisionless plasma and incorporation of important physical phenomena into linear stability theories appropriate to Tokamaks. The nonlinear work has established a general technique for dealing with the singular functions which arise and is now applied to the collisionless drift, the dissipative trapped electron in linear geometry and the drift cyclotron loss cone. Multimode problems are under study. The linear theory includes the influence of resonant electrons on the trapped electron instability in sheared magnetic fields. A further calculation includes the collisional broading of the untrapped electron response. Finally a general technique is developed for calculations when there are collisions and the product of the poloidal wave number and ion gyroradium is not necessarily small.
Author: Publisher: ISBN: Category : Aeronautics Languages : en Pages : 724
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: Publisher: ISBN: Category : Power resources Languages : en Pages : 1474
Book Description
Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Author: United States. Energy Research and Development Administration. Technical Information Center Publisher: ISBN: Category : Force and energy Languages : en Pages : 588
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Author: United States. Energy Research and Development Administration. Technical Information Center
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