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Author: Martin A. Gundersen Publisher: Springer Science & Business Media ISBN: 146153786X Category : Technology & Engineering Languages : en Pages : 359
Book Description
The purpose of the 1989 NATO ARW was to develop applications, and an improved understanding of the physics for high current emission and conduction observed in hollow cathode-hollow anode switches including the pseudo spark and BLT. New applications include highly emissive cathodes for microwave devices, accelerators and free electron lasers, high power tubes, electron and ion beams, microlithography, accelerators, and other plasma devices. Recent research has produced a new generation of gas-phase plasma switches that are characterized by very high current emission and conduction while operating in a glow mode. These switches include the pseudospark and the BLT, both of which have hollow electrodes, switch over 10 to 100 kA peak current, and have cathodes with emission ~ 2 2 10,000 Ncm over ~ 1 cm area. The cathode properties are especially remarkable - about 2 orders of magnitude larger emission than existing thermionic cathodes. Part of the meeting was devoted to understanding these properties, and exploiting applications of this cathode. The remarkable properties of these switches are very surprising in the light of considerable previous work in this area, and these results deserve study in order to understand the underlying physical mechanisms, and to develop ideas and insight into future applications, and foster coherent research in this area. The operating cycle of pseudo-spark and BL T switches and related devices can be divided into four phases: hold-off, triggering, conduction, and recovery. There was very little discussion of the hold-off and recovery phases.
Author: Martin A. Gundersen Publisher: Springer Science & Business Media ISBN: 146153786X Category : Technology & Engineering Languages : en Pages : 359
Book Description
The purpose of the 1989 NATO ARW was to develop applications, and an improved understanding of the physics for high current emission and conduction observed in hollow cathode-hollow anode switches including the pseudo spark and BLT. New applications include highly emissive cathodes for microwave devices, accelerators and free electron lasers, high power tubes, electron and ion beams, microlithography, accelerators, and other plasma devices. Recent research has produced a new generation of gas-phase plasma switches that are characterized by very high current emission and conduction while operating in a glow mode. These switches include the pseudospark and the BLT, both of which have hollow electrodes, switch over 10 to 100 kA peak current, and have cathodes with emission ~ 2 2 10,000 Ncm over ~ 1 cm area. The cathode properties are especially remarkable - about 2 orders of magnitude larger emission than existing thermionic cathodes. Part of the meeting was devoted to understanding these properties, and exploiting applications of this cathode. The remarkable properties of these switches are very surprising in the light of considerable previous work in this area, and these results deserve study in order to understand the underlying physical mechanisms, and to develop ideas and insight into future applications, and foster coherent research in this area. The operating cycle of pseudo-spark and BL T switches and related devices can be divided into four phases: hold-off, triggering, conduction, and recovery. There was very little discussion of the hold-off and recovery phases.
Author: Gennady A. Mesyats Publisher: Springer Science & Business Media ISBN: 0306486547 Category : Technology & Engineering Languages : en Pages : 576
Book Description
Mesyats' Pulsed Power provides in-depth coverage of the generation of pulsed electric power, electron and ion beams, and various types of pulsed electromagnetic radiation. The electric power that can be produced by the methods described ranges from 106 to 1014W for pulse durations of 10-10-10-7s. The book consists of nine parts containing 28 chapters, which deal with various aspects of pulsed power and high-power electronics and cover a concise theory of electric circuits as applied to nanosecond pulse technology; physics of fast processes occurring in electrical discharges in vacuum, gases, and liquids; phenomena in long lines; mechanisms of operation and designs of high-power gas-discharge, plasma, and semiconductor closing and opening switches as well as of high-power electric pulse generators using these switches; solid-state (semiconductor and magnetic) methods of production and transformation of nanosecond high-power pulses; and methods of production of high-power pulsed electron and ion beams. The closing part describes methods applied to produce high-power nanosecond pulsed X-rays, laser beams, microwaves, and ultrawideband electromagnetic radiation. This all-embracing book covers gas, laser, semiconductor, and magnetic circuit elements, the phenomenon of explosive electron emission discovered by the author, diodes of various types, including semiconductor diodes based on the SOS effect discovered with participation of the author, and methods of production of various types of high-power pulsed radiation.
Author: Loucas G. Christophorou Publisher: Springer ISBN: 1461537061 Category : Technology & Engineering Languages : en Pages : 625
Book Description
The Sixth International Symposium on Gaseous Dielectrics was held in Knoxville, Tennessee, U.S.A., on September 23-27, 1990. The symposium continued the trans disciplinary character and comprehensive approach of the preceding five symposia. Gaseous Dielectrics VI is a detailed record of the symposium proceedings. It covers recent advances and developments in a wide range of basic, applied and industrial areas of gaseous dielectrics. It is hoped that Gaseous Dielectrics VI will aid future research and development in and encourage wider industrial use of gaseous dielectrics. The Organizing Committee of the Sixth International Symposium on Gaseous Dielectrics consisted of L. G. Christophorou (U.S.A.), F. Y. Chu (Canada), A. H. Cookson (U.S.A.), D. L. Damsky (U.S.A.), O. Farish (U.K.), I. Gallimberti (Italy), A. Garscadden (U.S.A.), E. Marode (France), T. Nitta (Japan), W. Pfeiffer (Germany), I. Sauers (U.S.A.), R. J. Van Brunt (U.S.A.), and W. Zaengl (Switzerland). The local arrangements committee consisted of members of the Health and Safety Research Division and personnel of the Conference Office of the Oak Ridge National Laboratory, and staff of the University of Tennessee (UTK). The contributions of each member of these committees, the work of the Session Chairmen, the interest of the participants, and the advice of innumerable colleagues are gratefully acknowledged.
Author: Alexander Wu Chao Publisher: World Scientific ISBN: 981126919X Category : Science Languages : en Pages : 960
Book Description
Edited by internationally recognized authorities in the field, this expanded and updated new edition of the bestselling Handbook, containing many new articles, is aimed at the design and operation of modern particle accelerators. It is intended as a vade mecum for professional engineers and physicists engaged in these subjects. With a collection of more than 2000 equations, 300 illustrations and 500 graphs and tables, here one will find, in addition to common formulae of previous compilations, hard to find, specialized formulae, recipes and material data pooled from the lifetime experience of many of the world's most able practioners of the art and science of accelerators.The seven chapters include both theoretical and practical matters as well as an extensive glossary of accelerator types. Chapters on beam dynamics and electromagnetic and nuclear interactions deal with linear and nonlinear single particle and collective effects including spin motion, beam-environment, beam-beam, beam-electron, beam-ion and intrabeam interactions. The impedance concept and related calculations are dealt with at length as are the instabilities due to the various interactions mentioned. A chapter on operational considerations including discussions on the assessment and correction of orbit and optics errors, realtime feedbacks, generation of short photon pulses, bunch compression, phase-space exchange, tuning of normal and superconducting linacs, energy recovery linacs, free electron lasers, cryogenic vacuum systems, steady state microbuching, cooling, space-charge compensation, brightness of light sources, collider luminosity optimization and collision schemes, machine learning, multiple frequency rf systems, FEL seeding, ultrafast electron diffraction, and Gamma Factory. Chapters on mechanical and electrical considerations present material data and important aspects of component design including heat transfer and refrigeration. Hardware systems for particle sources, feedback systems, confinement, including undulators, and acceleration (both normal and superconducting) receive detailed treatment in a sub-systems chapter, beam measurement and apparatus being treated therein as well.A detailed name and subject index is provided together with reliable references to the literature where the most detailed information available on all subjects treated can be found.
Author: Alex Chao Publisher: World Scientific ISBN: 9789810235000 Category : Science Languages : en Pages : 702
Book Description
Edited by internationally recognized authorities in the field, this handbook focuses on Linacs, Synchrotrons and Storage Rings and is intended as a vade mecum for professional engineers and physicists engaged in these subjects. Here one will find, in addition to the common formulae of previous compilations, hard to find specialized formulae, recipes and material data pooled from the lifetime experiences of many of the world's most able practitioners of the art and science of accelerator building and operation.
Author: Martin A. Gundersen
Author: Martin A. Gundersen
Author: Martin A. Gundersen
Author: Klaus Frank
Author: Gennady A. Mesyats
Author: 
Author: Loucas G. Christophorou
Author: Alexander Wu Chao
Author: Alex Chao
Author: Martin A. Gundersen![Physics and applications of pseudosparks : [proceedings of a NATO Advanced Research Workshop on Physics and Applications of Hollow Glow Switches, held July 17-21, 1989, in Lillehamma [sic], Norway] PDF](https://books.google.com/books/content/images/frontcover/oyhs0AEACAAJ?fife=w80-h100)
Author: Martin A. Gundersen