Download or read book Investigation of the Interaction of High Current Relativistic Electron Beams with Electromagnetic Fields written by T. Garvey and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Interaction of High Current Relativistic Electron Beams with Electromagnetic Fields written by T. Garvey and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results obtained in the investigation of high current relativistic electron beams produced by explosive electron eMission from the flare cathode plasma of a high voltage, cold-cathode, field-emission diode are reported. In addition, the production of high power (~100kW) microwave radiation through the interaction of such beams with the natural modes of a resonant cavity is reported. A Marx bank generator was used to excite a hollow cylindrical cathode stalk producing diode currents of the order of 1 kA. A fraction (d"5%) of the diode current was transmitted through a thin anode mesh to produce a relativistic electron beam drifting in a low pressure (2 æ torr) region. Diode voltage pulse widths of typically one microsecond were observed with anode-cathode (A-K) gap spacings of 1.5mm to 50mm being employed. The thermal expansion of the cathode plasma resulted in a time dependent diode impedance and measurements of this impedance for varying initial A-K gap settings illustrated a space-charge limited current-voltage characteristic. A quasi-static magnetic field, produced by a pulsed solenoidal coil, was used to magnetise the vacuum drift space in which the beam propagated. The interaction of the relativistic beam with the magnetic field produced high power microwave radiation at X-band and Q-band frequencies. The most prominent feature of this interaction was the existence of sharp "resonant" field values where radiation ocurred. This self-excited radiation is thought to be due to an interaction between the Doppler-shifted electron cyclotron frequency (ECF) of the electron beam and the natural modes of oscillation of the cavity in which the beam drifts. Observation of radiation at Q-band frequencies would indicate that harmonics of the ECF are also present, albeit at weaker intensities. The magnitude of the collected electron beam current was observed to be dependent upon the strength of the applied magnetic field in which the beam drifted.

Download or read book The Application of High Current Relativistic Electron Beams in Controlled Thermonuclear Research written by and published by . This book was released on 1974 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soviet Research on the Transport of Intense Relativistic Electron Beams Through High pressure Air written by Nikita Wells and published by . This book was released on 1987 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soviet research on the propagation of intense relativistic electron beams (IREB) through fairly high-pressure air (pressure range 0.1 to 760 Torr) since the early 1970s has included the study of the plasma channel created by the passage of the electron beam through air, the resistive hose instability and its effect on beam propagation, the effect of self-fields, current enhancement, gas expansion, return currents, inherent beam energy spread, and other factors. This report covers Soviet developments in IREB propagation through air where the beam is not focused by external magnetic fields. The information was obtained from Soviet open-source publications with emphasis given to the last ten years of beam propagation in the Soviet Union. The volume of papers published on this subject in recent years indicates a significant increase in Soviet research in this area.

Download or read book Interaction of Relativistic Electron Beams with High Z Plasmas written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A set of relativistic multigroup diffusion equations was derived for the study of electron beam--target interactions. Included are transport, Coulomb collisions, electric and magnetic fields, bremsstrahlung, and hydrodynamic motion of the background plasma. LASNEX, the Laser-Fusion code, is being modified to include these equations and will be used for modeling electron beam fusion. (auth).

Download or read book Theoretical Studies of Intense Relativistic Electron Beam plasma Interactions written by Sidney Darwin Putnam and published by . This book was released on 1972 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Investigation of High Current Relativistic Electron Beam Interactions written by R. Block and published by . This book was released on 1970 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of an effort to develop a source of electron beams that are fully diagnosed, that are more reproducible, and that have a wider range of beam parameters than previously attainable. (Author).

Download or read book Interactions of Relativistic Electron Beams with High Atomic Number Plasmas written by David Mosher and published by . This book was released on 1974 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: A relativistically-correct Fokker-Planck analysis is used to develop fluid equations which model the interaction of relativistic electron beams with high atomic-number plasmas. The derived collision terms can be used to describe scattering and energy in materials ranging from the solid to high-temperature plasma forms. The full set of equations discussed can be used to study electron-beam-initiated pellet-fusion in a completely self-consistent fashion. Specifically, the model is applicable to study of beam pinching in plasma-filled diodes, the interaction of focussed beams with target plasmas, and the transport of high nu/gamma beams in high atomic-number plasmas. Although the general equations are amenable to solution only by computational techniques, analytic solutions describing the time-dependent, collisional interaction of a beam in an infinite plasma, and the one-dimensional equilibrium of a beam in a plasma with applied electric field have been obtained.

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 A Study of Relativistic Electron Beams as an Accelerating Medium written by Antonio Philippe Anselmo and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1987 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Electron Beams and Microwave Vacuum Electronics written by Shulim E. Tsimring and published by John Wiley & Sons. This book was released on 2006-11-10 with total page 599 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on a fundamental feature of vacuum electronics: the strong interaction of the physics of electron beams and vacuum microwave electronics, including millimeter-wave electronics. The author guides readers from the roots of classical vacuum electronics to the most recent achievements in the field. Special attention is devoted to the physics and theory of relativistic beams and microwave devices, as well as the theory and applications of specific devices.

Download or read book Studies of High Current Relativistic Electron Beam Propagation written by David Andrew Hammer and published by . This book was released on 1969 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Frontiers in High Energy Density Physics written by National Research Council and published by National Academies Press. This book was released on 2003-05-11 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent scientific and technical advances have made it possible to create matter in the laboratory under conditions relevant to astrophysical systems such as supernovae and black holes. These advances will also benefit inertial confinement fusion research and the nation's nuclear weapon's program. The report describes the major research facilities on which such high energy density conditions can be achieved and lists a number of key scientific questions about high energy density physics that can be addressed by this research. Several recommendations are presented that would facilitate the development of a comprehensive strategy for realizing these research opportunities.

Download or read book A numerical study of a high current relativistic electron beam and its interaction with a plasma written by A. T. Baxter and published by . This book was released on 1979 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interaction of an Intense Relativistic Electron Beam with Axial and Convergent Magnetic Guide Fields written by John Joseph Bzura and published by . This book was released on 1971 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Interaction of Relativistic Electron Beams with the Near earth Space Environment written by Linda Habash Krause and published by . This book was released on 1998 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Introduction to the Physics of Intense Charged Particle Beams written by R. Miller and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: An intense charged particle beam can be characterized as an organized charged particle flow for which the effects of beam self-fields are of major importance in describing the evolution of the flow. Research employing such beams is now a rapidly growing field with important applications ranging from the development of high power sources of coherent radiation to inertial confinement fusion. Major programs have now been established at several laboratories in the United States and Great Britain, as well as in the USSR, Japan, and several Eastern and Western European nations. In addition, related research activities are being pursued at the graduate level at several universities in the US and abroad. When the author first entered this field in 1973 there was no single reference text that provided a broad survey of the important topics, yet contained sufficient detail to be of interest to the active researcher. That situation has persisted, and this book is an attempt to fill the void. As such, the text is aimed at the graduate student, or beginning researcher; however, it contains ample information to be a convenient reference source for the advanced worker.