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The Linear And Self Consistent Nonlinear Theory Of The Electron Cyclotron Maser Instability
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Book Synopsis The Linear and Self Consistent Nonlinear Theory of the Electron Cyclotron Maser Instability by : P. Sprangle
Download or read book The Linear and Self Consistent Nonlinear Theory of the Electron Cyclotron Maser Instability written by P. Sprangle and published by . This book was released on 1977 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper the linear and nonlinear theory of the electron cyclotron maser instability is considered. The configuration used to study the laser instability consists of relativistic electrons gyrating about and drifting along a uniform magnetic field within a parallel plate waveguide. Relativistic effects associated with the gyrating electrons are responsible for excitation of the transverse electric mode in the waveguide. Linear theory shows that the growth rate maximizes when the actual beam velocity coincides with the axial wave group velocity of the excited electromagnetic wave. This allows the performance of nonlinear analysis in a frame where both the axial wave number and axial beam velocity vanish. The nonlinear analysis shows that there are two possible mechanisms for the saturation of the unstable wave: i. depletion of the available free energy associated with the rotating particles. ii. phase trapping of the gyrating electrons in the wave. The initial beam parameters determine which of the two mechanisms is responsible for saturation. Competition between the two saturation mechanisms leads to a peaking in the energy conversion efficiency as a function of beam energy. Numerical results of the nonlinear formalism show that energy conversion efficiencies from the particles to the wave can be as high as 60 percent in the beam frame.
Book Synopsis Report of NRL Progress by : Naval Research Laboratory (U.S.)
Download or read book Report of NRL Progress written by Naval Research Laboratory (U.S.) and published by . This book was released on 1977 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Self-Consistent Theory of Cyclotron Maser Instability for Intense Hollow Electron Beams by : Hwan-sup Uhm
Download or read book Self-Consistent Theory of Cyclotron Maser Instability for Intense Hollow Electron Beams written by Hwan-sup Uhm and published by . This book was released on 1978 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper develops a self-consistent theory of the cyclotron maser instability, assuming azimuthally symmetric perturbations about a slowly rotating hollow electron beam propagating parallel to a uniform axial magnetic field (B sub 0) (e sub z). The stability analysis is carried out within the framework of the linearized Vlasov-Maxwell equations. The analysis is carried out for the specific choice of equilibrium electron distribution function in which all electrons have the same value of canonical angular momentum and the same value of energy in a frame of reference moving with axial velocity c(beta sub b). Stability properties are investigated including the important influence of finite radial geometry, finite beam temperature, and transverse magnetic perturbations.
Book Synopsis Physics of Nonneutral Plasmas by : Davidson
Download or read book Physics of Nonneutral Plasmas written by Davidson and published by Allied Publishers. This book was released on 1990 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Review written by and published by . This book was released on 1974 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Introduction to the Physics of Gyrotrons by : Gregory S. Nusinovich
Download or read book Introduction to the Physics of Gyrotrons written by Gregory S. Nusinovich and published by JHU Press. This book was released on 2020-03-03 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: As unique sources of coherent high-power, microwave, and millimeter-wave radiation, gyrotrons are an essential part of the hunt for controlled fusion. Presently, gyrotrons are actively used for electron cyclotron resonance plasma heating and current drive in various controlled fusion reactors. These sources have been under development in many countries for more than forty years. In spite of their widespread use, however, there is as yet no single book to introduce non-specialists to this vital field. Now Gregory S. Nusinovich, an early pioneer of the gyrotron and widely regarded today as the world's leading authority on the subject, explains the fundamental physical principles upon which gyrotrons and related devices operate. Nusinovich first sets forth some "rules of thumb" that allow readers to understand gyrotron operation in simple terms. He then explores the fundamentals of the general theory of gyrotrons and offers an overview of the various types of gyro-devices, including gyromonotrons, gyroklystrons, gyro-traveling-wave tubes, and gyrotwystrons. He explains not only the theory, linear and nonlinear, but also the practical challenges that users of such devices face. This book will be of interest to undergraduate and graduate students as well as to those who develop gyrotrons or who use them in various applications. It should also appeal to plasma physicists interested in charged-particle dynamics, as well as to applied physicists needing to know more about micro- and millimeter-wave technologies.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Millimeter Wave Engineering and Applications by : Prakash Bhartia
Download or read book Millimeter Wave Engineering and Applications written by Prakash Bhartia and published by Wiley-Interscience. This book was released on 1984-01-20 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art presentation of millimeter wave technology. Contains a comprehensive, yet broad spectrum of topics on generation, propagation, components, circuits, antennas and applications. Discusses the importance of this new communications technology in military, aerospace, governmental, and civil communications systems.
Author :Machavaram V. Kartikeyan Publisher :Springer Science & Business Media ISBN 13 :3662076373 Total Pages :234 pages Book Rating :4.6/5 (62 download)
Book Synopsis Gyrotrons by : Machavaram V. Kartikeyan
Download or read book Gyrotrons written by Machavaram V. Kartikeyan and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: Drawing on the author's wide experience, this book gives a comprehensive review of the state of the art in gyrotron technology, covering the theory, design and applications. The book includes an extensive references list which provides an excellent guide to the related literature.
Book Synopsis High Power Microwaves by : James Benford
Download or read book High Power Microwaves written by James Benford and published by CRC Press. This book was released on 2007-02-05 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first edition of High Power Microwaves was considered to be the defining book for this field. Not merely updated but completely revised and rewritten, the second edition continues this tradition. Written from a systems perspective, the book provides a unified, coherent presentation of the fundamentals in this rapidly changing field. The p
Book Synopsis International Journal of Infrared and Millimeter Waves by :
Download or read book International Journal of Infrared and Millimeter Waves written by and published by . This book was released on 2003 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Non-Linear Theory of Efficiency Enhancement in the Electron Cyclotron Maser by : P. Sprangle
Download or read book The Non-Linear Theory of Efficiency Enhancement in the Electron Cyclotron Maser written by P. Sprangle and published by . This book was released on 1979 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: We present a nonlinear analysis of the single particle dynamics in an electron cyclotron maser oscillator and show that the efficiency can be dramatically enhanced by appropriately contouring the system parameters. The beam electrons can be prebunched in phase to form a macro-particle in phase space such that beam kinetic energy is not extracted. After forming a phase bunched electron beam, either the applied magnetic field or the cavity electromagnetic field can be spatially varied in such a way as to extract virtually all the electron transverse kinetic energy. Without such contouring, the transverse efficiency is typically
Book Synopsis Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers by : Chao-Hai Du
Download or read book Millimeter-Wave Gyrotron Traveling-Wave Tube Amplifiers written by Chao-Hai Du and published by Springer. This book was released on 2014-05-29 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: A gyrotron traveling-wave amplifier (gyro-TWT) with the high-power and broad-band capabilities is considered as a turn-on key for next generation high-resolution radar. The book presents the most advanced theory, methods and physics in a gyro-TWT. The most challenging problem of instability competition has been for the first time addressed in a focused and systematic way and reported via concise states and vivid pictures. The book is likely to meet the interest of researchers and engineers in radar and microwave technology, who would like to study the gyro-TWTs and to promote its application in millimeter-wave radars. Chao-Hai Du and Pu-Kun Liu are both professors at Peking University.
Book Synopsis Linear and Nonlinear Theory of the Doppler-Shifted Cyclotron Resonance Maser Based on TE and TM Waveguide Modes by : Arne W. Fliflet
Download or read book Linear and Nonlinear Theory of the Doppler-Shifted Cyclotron Resonance Maser Based on TE and TM Waveguide Modes written by Arne W. Fliflet and published by . This book was released on 1986 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: This paper presents a comprehensive theory of the Cyclotron Resonance Maser (CRM) interaction in a circular waveguide. The kinetic theory is used to drive the dispersion relationships for both TE and TM modes. The TE mode case has been investigated by several authors, but there has been comparatively little work on the Tm mode case. However, the TM mode interaction competes effectively with the TE mode interaction at relitavistic electron energies. The conditions for maximum temporal and spatial growth rates are shown. The TM mode growth rates are found to vanish when the RF wave group velocity equals the beam axial velocity (grazing incidence). The single particle theory is used to derive a compact set of self consistent nonlinear equations for the TE and TM mode interactions. These equations are particularly appropriate for the Cyclotron Auto Resonance Maser (CARM) regime but applicability extends to other regimes as well. The conditions for optimum efficiency are investigated for oscillator and amplifier configurations at the fundamental and low order harmonic interactions. In the case of a beam with delta function distributions in position and momentum the single particle results in the small signal limit are shown to be equivalent to the kinetic theory results. Design parameters are given for high power amplifier and oscillator configurations. Keywords: Cyclotron resonance maser; Kinetic theory; Circular waveguide; Relativistic electron energy; Temporal and spatial growth rate; Beam axial velocity; Amplifier; RF wave group velocity; Oscillator.
Book Synopsis Infrared and Millimeter Waves by : Kenneth J. Button
Download or read book Infrared and Millimeter Waves written by Kenneth J. Button and published by . This book was released on 1979 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Tapering on High Current, Long Pulse Gyrotron Backward Wave Oscillator Experiments by : Mark Thomas Walter
Download or read book Effects of Tapering on High Current, Long Pulse Gyrotron Backward Wave Oscillator Experiments written by Mark Thomas Walter and published by . This book was released on 1995 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the International Conference on Lasers '78 by : Vincent J. Corcoran
Download or read book Proceedings of the International Conference on Lasers '78 written by Vincent J. Corcoran and published by . This book was released on 1979 with total page 872 pages. Available in PDF, EPUB and Kindle. Book excerpt:
