Time-frequency Analysis of High Power Microwave Sources PDF Download

Author: Christopher Wayne Peters
Publisher:
ISBN:
Category :
Languages : en
Pages : 342

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Author: James Benford
Publisher: CRC Press
ISBN: 1420012061
Category : Science
Languages : en
Pages : 552

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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

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Category : Municipal officials and employees
Languages : en
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Languages : en
Pages : 0

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Over its three year period, this AASERT grant supported a large number of undergraduate and graduate students at various levels at the University of Michigan. The supported students are all US citizens. Their major achievements include: (1) First applications of time-frequency analysis to a high power gyrotron and to a conventional magnetron. (2) An in-depth analysis of transient limiting current in a diode. (3) Spectroscopic analysis that identifies water as a major culprit that triggers pulse shortening in HPM sources. (4) Initiation of an experiment of multipactor on a dielectric. (5) In-depth study of AC Stark broadening and its application to HPM.

Author: R.A Cairns
Publisher: CRC Press
ISBN: 1000157180
Category : Mathematics
Languages : en
Pages : 351

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Written at the graduate level, Generation and Application of High Power Microwaves discusses the basic physics of the generation of microwave and radiofrequency waves in the megawatt power range and the application of these ideas to a range of devices such as klystrons, gyrotrons, and free electron lasers. The book also contains chapters covering the transmission of the power through waveguides and the problems associated with mode conversion in transmission lines. The main application area covered is the heating and current drive in tokamaks and other devices for research into controlled nuclear fusion. Other applications of high power microwave technology are not neglected, and among those discussed are multiple charged ion and soft x-ray sources, electron spin resonance spectroscopy, advanced materials processing, millimeter wave radar, and supercolliders.

Author: Victor L. Granatstein
Publisher: Artech House Microwave Library
ISBN:
Category : Science
Languages : en
Pages : 592

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Author: Robert J. Barker
Publisher: Wiley-IEEE Press
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 528

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Electrical Engineering High-Power Microwave Sources and Technologies A volume in the IEEE Press Series on RF and Microwave Technology Roger D. Pollard and Richard Booton, Series Editors Written by a prolific group of leading researchers, High-Power Microwave Sources and Technologies focuses primarily on the high-power microwave (HPM) technology most appropriate for military applications. It highlights the advances achieved from 1995 to 2000 as the result of a US Department of Defense (DoD) funded, $15 million Multidisciplinary University Research Initiative (MURI) program. The grant created a synergy between researchers in the DoD laboratories and the academic community, and established links with the microwave vacuum electronics industry, which has led to unprecedented collaborations that transcend laboratory and disciplinary boundaries. This essential reference provides the history, state-of-the-art, and possible future of HPM source research and technologies. The first alternative to the multiplicity of detailed applications-based HPM books and journal articles, this book familiarizes the reader with recent advances in this rapidly changing field. It presents a compendium of valuable information on HPM sources, representing significant enabling technologies, including beam and rf control, cathodes, windows, and computational techniques. The era of utilizing computational techniques to electronically design an HPM source prior to actually building the hardware has arrived. Gain insight into proven techniques and solutions that will enhance your source design. High-Power Microwave Sources and Technologies is an invaluable resource to researchers active in the field, faculty, graduate and post-graduate students. Special Note: All royalties realized from the sale of this book will fund the future research and publications activities of graduate students in the HPM field.

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Category :
Languages : en
Pages : 0

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The gyrotron microwave source is driven by the Michigan Electron Long Beam Accelerator (MELBA) which operates at -0.8 MV, 1-10 kA, and 0.5-1.5 microsecond pulselength. The correlation was measured between optical spectroscopic emission versus microwave power and pulselength. It was found that the optical emission from hydrogen H-alpha radiation was correlated with microwave power and inversely related to microwave pulselength. The physical mechanism is related to plasma accreted from water vapor on the inside of the microwave cavity and collector. This water is ablated and dissociated to release hydrogen. (A continuing AFOSR/MURI program is exploring techniques to remove water from surfaces by RF plasma processing.) The microwave network analyzer was utilized to obtain cold tests of microwave structures in a rectangular-cross-section gyrotron and a coaxial gyrotron. The primary cold-cavity modes were measured and agreed very well with the results of heterodyned high power microwave signals analyzed by time-frequency analysis. Frequency chirping and mode hopping due to voltage fluctuations were observed as other possible causes of pulse shortening.

Author:
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Category :
Languages : en
Pages : 2

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Lijst met jaartallen en functies van Adriaan Engelvaart (1812-1893), geboren te Looperkapelle, officier en gouverneur van de KMA die in het kabinet-Thorbecke III de tweede minister van Oorlog was.

Author: John W. Luginsland
Publisher: John Wiley & Sons
ISBN: 1119384443
Category : Technology & Engineering
Languages : en
Pages : 306

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Explore the latest research avenues in the field of high-power microwave sources and metamaterials A stand-alone follow-up to the highly successful High Power Microwave Sources and Technologies, the new High Power Microwave Sources and Technologies Using Metamaterials, demonstrates how metamaterials have impacted the field of high-power microwave sources and the new directions revealed by the latest research. It’s written by a distinguished team of researchers in the area who explore a new paradigm within which to consider the interaction of microwaves with material media. Providing contributions from multiple institutions that discuss theoretical concepts as well as experimental results in slow wave structure design, this edited volume also discusses how traditional periodic structures used since the 1940s and 1950s can have properties that, until recently, were attributed to double negative metamaterial structures. The book also includes: A thorough introduction to high power microwave oscillators and amplifiers, as well as how metamaterials can be introduced as slow wave structures and other components Comprehensive explorations of theoretical concepts in dispersion engineering for slow wave structure design, including multi-transmission line models and particle-in-cell code virtual prototyping models Practical discussions of experimental measurements in dispersion engineering for slow wave structure design In-depth examinations of passive and active components, as well as the temporal evolution of electromagnetic fields High Power Microwave Sources and Technologies Using Metamaterials is a perfect resource for graduate students and researchers in the areas of nuclear and plasma sciences, microwaves, and antennas.