Parametric Excitation Of Plasma Instabilities With A Density Modulated Relativistic Electron Beam PDF Download
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Author | : Bamandas Basu |
Publisher | : |
Total Pages | : 117 |
Release | : 1974 |
Genre | : Electron beams |
ISBN | : |
Download Parametric Excitation of Plasma Instabilities with a Density Modulated Relativistic Electron Beam Book in PDF, ePub and Kindle
Parametric electrostatic instabilities in a non-relativistic, stationary plasma excited by a monoenergetic, relativistic electron beam with density sinusoidally modulated along the direction of the beam flow have been theoretically investigated using multiple-time-scale perturbation expansion method. The instability occurs due to resonant energy transfer from the negative energy carrying beam-synchronous mode into the positive energy plasma oscillation mode of a uniform beam-plasma system. The resonant coupling occurs in the presence of the density modulation. The linear growth rate and the width of of the unstable spectrum have been determined. It has been found that, for a given beam to plasma density ratio, there exists an upper limit to the initial beam energy for which the instabilities can be excited.
Author | : Valery B. Krasovitskii |
Publisher | : Nova Publishers |
Total Pages | : 234 |
Release | : 2008 |
Genre | : Science |
ISBN | : 9781600215155 |
Download Instabilities of Relativistic Electron Beam in Plasma Book in PDF, ePub and Kindle
This book is devoted to the non-linear theory of the collective interaction between a modulated beam of relativistic charged particles and narrow electromagnetic and Langmuir wave packets in plasma or gas slow-wave systems. Regular oscillations excited by a relativistic beam under the conditions of Cherenkov resonance and the anomalous Doppler effect can be used to generate coherent microwave radiation and accelerate charged particles in plasma.
Author | : Ferdinand F. Cap |
Publisher | : Academic Press |
Total Pages | : 575 |
Release | : 2013-09-11 |
Genre | : Science |
ISBN | : 148327098X |
Download Handbook on Plasma Instabilities Book in PDF, ePub and Kindle
Handbook on Plasma Instabilities, Volume 2 consists of four chapters on plasma instabilities. Chapter 14 discusses the various aspects of microinstabilities. Beam-plasma systems are covered in Chapter 15, while the various stabilization methods are presented in Chapter 16. This book concludes with deliberations on parametric effects in Chapter 17. Other topics discussed include the microinstabilities of a homogeneous unmagnetized plasma; kinetic theory of macroscopic instabilities; basic beam physics; and beam-plasma instabilities. The magnetic field configuration stabilization; macroscopic nonmagnetic stabilization methods; parametric instabilities in homogeneous unmagnetized plasmas; and parametric effects in bounded and inhomogeneous plasmas are also elaborated in this text. This publication is beneficial to students and researchers conducting work on unstable plasma.
Author | : |
Publisher | : |
Total Pages | : |
Release | : 1978 |
Genre | : |
ISBN | : |
Download Parametric Lower-hybrid Instability Driven by Modulated Electron Beam Injection Book in PDF, ePub and Kindle
A modulated electron beam is injected into a low .beta. plasma parallel to the confining field to investigate the energy-transfer-rate from the electron beam to the plasma. Parametric excitation of electrostatic lower-hybrid waves and ion cyclotron quasimodes is experimentally identified. The temperature of both ions and electrons is observed to increase significantly concomitant with the growth of the instability.
Author | : H. Schamel |
Publisher | : |
Total Pages | : 42 |
Release | : 1976 |
Genre | : |
ISBN | : |
Download Parametric Excitation of Ion Density Fluctuations in the Relativistic Beam-Plasma Interaction Book in PDF, ePub and Kindle
When a weak and cold relativistic electron beam interacts with a dense plasma it generates a nearly monochromatic wave of high intensity which triggers the growth of parametric instabilities. The present work investigates this process by using a hybrid technique in which the fully relativistic motion of the beam particles is treated numerically, while the behavior of the background plasma and the parametrically excited waves is treated analytically through appropriate linear dielectric functions. It is found that the self-consistent excitation of large ion density fluctuations leads to the decoupling of the beam from the background plasma, hence limiting the amount of energy that can be extracted from the beam. By adjusting the various parameters of the problem it is found that up to 23% of the initial beam energy can be transferred to the electrostatic waves. The large ion fluctuations responsible for decoupling the beam correspond to purely growing modes which exhibit secular growth in time.
Author | : |
Publisher | : |
Total Pages | : 680 |
Release | : 1976 |
Genre | : Nuclear energy |
ISBN | : |
Download Nuclear Science Abstracts Book in PDF, ePub and Kindle
Author | : United States. Energy Research and Development Administration |
Publisher | : |
Total Pages | : |
Release | : 1976-05 |
Genre | : Medicine |
ISBN | : |
Download ERDA Energy Research Abstracts Book in PDF, ePub and Kindle
Author | : United States. Energy Research and Development Administration. Technical Information Center |
Publisher | : |
Total Pages | : 724 |
Release | : 1976 |
Genre | : Force and energy |
ISBN | : |
Download ERDA Energy Research Abstracts Book in PDF, ePub and Kindle
Author | : United States. Energy Research and Development Administration |
Publisher | : |
Total Pages | : 716 |
Release | : 1976 |
Genre | : Power resources |
ISBN | : |
Download ERDA Research Abstracts Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 996 |
Release | : 1975 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle