Download or read book Application of an Intense Relativistic Electron Beam to Microwave Generation written by Yuval Carmel and published by . This book was released on 1975 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory of Microwave Generation by an Intense Relativistic Electron Beam in a Rippled Magnetic Field written by Wallace M. Manheimer and published by . This book was released on 1973 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: Motivated by the recent results of Friedman and Herndon the authors have investigated theoretically the stability of a waveguide enclosed relativistic electron beam in a rippled magnetic field. The presence of the ripple can couple negative energy beam modes to positive energy waveguide modes to produce instability and thereby generate microwaves. In the experiment the thickness of the beam is small compared to all other relevant lengths. The nonlinear dynamics of an infinitessimally thin sheet beam is analyzed. The system is described by the orbit equations for the particles, Maxwell's equations, a set of nonlinear boundary conditions across the moving surface and a continuity equation for the moving surface. (Author).
Download or read book Relativistic Electron Beam Interactions for Generation of High Power at Microwave Frequencies written by and published by . This book was released on 1978 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last few years, the application of intense, relativistic- electron beams to the generation of electromagnetic radiation at wavelengths ranging from 10 cm down to fraction of a millimeter has enabled significant advances to be made in peak power capabilities. The purpose of this review is to summarize the status of these advances and to describe briefly the nature of the several mechanisms involved.
Download or read book The Generation of High Power Microwave Radiation from Intense Relativistic Electron Beams written by and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides a basis for evaluating the current and near- future development of relativistic-electron-beam (REB) technology for the generation of microwave radiation. Magnetrons, gyrotrons, and Raman scattering are examined in some detail and references are cited for several other conversion schemes. The status of repetitively pulsed REB generation is then reviewed and two hypothetical systems are constructed from the conversion schemes and generators that were considered earlier. Finally, some of the advantages (such as high power and compact size) and disadvantages (such as unproven technology) are summarized. (Author).
Download or read book Microwave Generation Through a Relativistic Electron Beam Interaction with a Hydrogen Plasma written by Miles Hunt Baron and published by . This book was released on 1987 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gigawatt Microwave Emission from an Intense Relativistic Electron Beam written by V. L. Granatstein and published by . This book was released on 1974 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Microwave generation experiments were carried out on a multimegavolt electron accelerator (3.3 MV, 80 kA). X-band microwave power as high as about 1 GW was measured. Results are compared with a non-linear theory of unstable resonant interaction between a TE waveguide mode of the electron drift tube and an electron cyclotron wave on the beam.
Download or read book Simulations of Intense Relativistic Electron Beam Generation by Foilless Diodes written by and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Foilless diodes used to produce intense annular relativistic electron beams have been simulated using the time-dependent, two-dimensional particle-in-cell code CCUBE. Current densities exceeding 200 kA/cm2 have been obtained in the simulations for a 5 MeV, 35 .cap omega. diode. Many applications, including microwave generation, collective ion acceleration and high-density plasma heating require a laminar electron flow in the beams. The simulation results indicate that foilless diodes immersed in a strong external magnetic field can achieve such a flow. Diodes using technologically achievable magnetic field strengths (approx. 100 kG) and proper electrode shaping appear to be able to produce beams with an angular scatter of less than 35 mrad at the current densities and energies mentioned above. Scaling of the impedance and temperature of the beam as a function of geometry, magnetic field strength and voltage is presented.
Download or read book Study of Intense Relativistic Electron Beam Modulation by Wakefield Effects written by J. Miller and published by . This book was released on 1991 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study has been undertaken in order to investigate plasma wakefield effects produced in intense electron beam propagation in a background plasma. A 2 MeV, 1 kA, electron beam is used for this experiment. A 50 cm diam., 3.6 m long drift tube is filled with a background gas, typically trimethylamine (TMA). This gas is ionized by electrons emitted from heated tungsten filaments which are biased at approximately -100 Volts. The resultant plasma density is fairly uniform and is adjustable in the range 10 to the 8th power to 5 x 10 to the 9th power per cubic cm. A higher density Ion Focused Regime (IFR) channel for electron beam propagation is generated by KrF-laser (248 nm) ionization of the background TMA gas. The intense electron beam propagating on an IFR channel in this background plasma experiences wakefield effects due to the natural oscillations of the background plasma which are excited by the beam current risetime. The Ez component of the induced field is responsible for producing beam current modulation near the background plasma frequency. The results scale with plasma density as expected and current modulation is nearly complete for a certain parameter range. This technique may be amenable to a high power microwave generation technique analogous to the relativistic klystron. Detailed experimental results of beam modulation will be presented.
Download or read book Generation of Intense Microwave Radiation by the Relativistic E beam Magnetron experiment and Numerical Simulation written by Alan Palevsky and published by . This book was released on 1980 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Theory of Microwave Emission by Velocity Space Instabilities of an Intense Relativistic Electron Beam written by Edward Ott and published by . This book was released on 1973 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: The stability of waveguide modes in a waveguide along which is propagated an unneutralized, intense beam of relativistic electrons guided by an applied axial magnetic field is considered. It is found that the waveguide mode can interact unstably with the beam by resonating with the Doppler shifted cyclotron frequency of the beam. This instability appears to be the mechanism by which microwaves are produced in some recent experiments which are discussed. (Author).
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Intense Microwave and Particle Beams III written by Howard E. Brandt and published by . This book was released on 1992 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High Power Microwave Generation and Applications written by D. K. Akulina and published by . This book was released on 1992 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microwave Generators written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Simulation of the generation of a relativistic electron beam in a foil diode configuration and of the subsequent intense microwave generation resulting from the formation of the virtual cathode is presented. The oscillating virtual cathode and the trapped beam electrons between the real and the virtual cathodes were found to generate microwaves. Generation of high-power microwaves with about 10% efficiency might be reasonably expected from such a virtual-cathode configuration.
Download or read book Contemporary Science and Technology of Plasma Plasma 96 written by and published by Allied Publishers. This book was released on 1998 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book High power Particle Beams Beams 90 Proceedings Of The 8th International Conference In 2 Volumes written by B N Breizman and published by World Scientific. This book was released on 1990-12-28 with total page 1406 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Conference Proceedings include 11 invited papers and about 200 contributed papers on various scientific and technological aspects of high-power particle beams. The following subject areas are covered: Physics and Technology of High-Power Particle Beams, New Developments in Pulsed-Power Technology and High-Power Accelerators, Diagnostics in High-Power Particle Beam Experiments, High-Power Particle Beam Interactions with Matter, High-Power Particle Beams in Fusion Research, High-Density Z-Pinches, Laser Pumping and Microwave Generation by High-Power Particle Beams, Technical and Industrial Applications of Pulsed Power and High-Power Particle Beams.
