Microwave Breakdown In Gases
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Microwave Breakdown In Gases
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Author : Alexander D. MacDonald
language : en
Publisher:
Release Date : 1966
Microwave Breakdown In Gases written by Alexander D. MacDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Technology & Engineering categories.
1. Introduction -- Microwave studies -- Dimensional analysis -- 2. Electron collisions -- Elastic collisions -- Inelastic collisions -- Electron loss processes -- 3. Boltzmann equation for an ionized gas -- Distribution functions -- Higher order terms -- Limits of diffusion theory -- 4. Breakdown theory, constant collision frequency -- Breakdown criteria -- Constant collision frequency -- 5. Breakdown theory, variable collision frequency -- Neon -- Neon-argon -- Argon, krypton, and xenon -- 6. Nonuniform and magnetic fields -- Nonuniform electric fields -- Magnetic fields -- 7. Experimental methods -- Microwave systems -- Vacuum systems -- 8. Breakdown in the atmosphere -- Experimental data -- Attachment-controlled breakdown -- Attachment--diffusion theory -- Breakdown near reentry vehicles -- Laser breakdown.
Microwave Breakdown In Gases
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Author : David Alexander Beaujean
language : en
Publisher:
Release Date : 1970
Microwave Breakdown In Gases written by David Alexander Beaujean and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Ionization of gases categories.
Pulsed Microwave Breakdown In Gases With A Low Degree Of Preionization
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Author : E. F. Dawson
language : en
Publisher:
Release Date : 1972
Pulsed Microwave Breakdown In Gases With A Low Degree Of Preionization written by E. F. Dawson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.
The paper presents the results of experimetns on microwave breakdown at an open end waveguide antenna in Air, Argon, Nitrogen, Carbon Dioxide and Methane at pressures of 0.3 and 30 Torr. The antenna was operated at 9.375 GHz under pulsed conditions at varying pulse rates. Very low degrees of preionization were obtained by adjusting to very slow pulse rates. The power needed to maintain the discharge was measured and from that the electric field strength was calculated. This presented as a function of pressure for each gas at pulse rates ranging from 10 to 500 pulses per second. At low pulse rates, significantly higher power levels are needed to maintain the discharge. An interesting feature is the double minima observed at low pulse rates in the data for breakdown field strength as a function of pressure for Carbon Dioxide and Methane. The data was also used to calculate ionization frequency as a function of effective electric field for all give gases. Where possible, this data is compared with data reported by other investigators. (Author).
Microwave Theory And The Breakdown Of Gases By Ruby Laser Radiation
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Author : Richard G. Tomlinson
language : en
Publisher:
Release Date : 1963
Microwave Theory And The Breakdown Of Gases By Ruby Laser Radiation written by Richard G. Tomlinson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1963 with categories.
Microwave breakdown theory is extrapolated to the 6943 Angstroms, ruby laser wavelength. The need for breakdown criterion other than that for the critical plasma frequency, sometimes used in microwave breakdown, is shown. A suitable criterion is developed from the solution of the electron density continuity equation, including recombination loss. A solution for the breakdown electric field strength, or power density, for the pulsed ruby laser in air as a function of pressure is obtained. The effect of varying pulse duration, initial electron density, and characteristic diffusion length is shown. A minimum power density of 10 to the 12th power watts/sq. cm is predicted for breakdown of air by ruby laser radiation. The extent of accuracy of the results of extrapolating microwave breakdown theory to optical laser breakdown is discussed; and there is speculation on the possibility of additional effects peculiar to laser breakdown. (Author).
Breakdown Of Gases In Microwave Fields On The Millimicrosecond Time Scale
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Author : William Henry Christoffers
language : en
Publisher:
Release Date : 1955
Breakdown Of Gases In Microwave Fields On The Millimicrosecond Time Scale written by William Henry Christoffers and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1955 with Electric discharges through gases categories.
The Electrical Breakdown Of Gases At Microwave Frequencies
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Author : P. E. Lane
language : en
Publisher:
Release Date : 1953
The Electrical Breakdown Of Gases At Microwave Frequencies written by P. E. Lane and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with categories.
Microwave Breakdown Of A Gas In A Cylindrical Cavity Of Arbitrary Length
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Author : Melvin A. Herlin
language : en
Publisher:
Release Date : 1948
Microwave Breakdown Of A Gas In A Cylindrical Cavity Of Arbitrary Length written by Melvin A. Herlin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1948 with Breakdown (Electricity) categories.
The Onset Of Breakdown In Gases Subject To Superposed Microwave And Unidirectional Electric Fields By W A Prowse E Laverick And W Jasinski
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Author : William Arthur PROWSE
language : en
Publisher:
Release Date : 1953
The Onset Of Breakdown In Gases Subject To Superposed Microwave And Unidirectional Electric Fields By W A Prowse E Laverick And W Jasinski written by William Arthur PROWSE and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1953 with categories.
Microwave Breakdown Calculations That Include The Effects Of Preionization In Neon And Neon Argon Mixtures
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Author : Mark R. Foster
language : en
Publisher:
Release Date : 1973
Microwave Breakdown Calculations That Include The Effects Of Preionization In Neon And Neon Argon Mixtures written by Mark R. Foster and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with Argon categories.
A computer program has been written to calculate the electric field required to initiate microwave breakdown in a partially ionized gas. The breakdown field is found by calculating ionization rates and diffusion loss rates and then solving for the value of the electric field at which these rates balance. In the preionization case, a modified diffusion coefficient is required to account for charge-separation effects. The program reported here uses the method of MacDonald for calculating ionization and diffusion loss rates and extends that method to the preionization case by using a multiplicative factor to model the transition to ambipolar diffusion. Results are graphed for neon and neon-argon mixtures using various values of the characteristic diffusion length and signal frequency over a range of gas pressures.
Microwave Breakdown In Gases
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Author : Alexander D. MacDonald
language : en
Publisher:
Release Date : 1966
Microwave Breakdown In Gases written by Alexander D. MacDonald and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Technology & Engineering categories.
1. Introduction -- Microwave studies -- Dimensional analysis -- 2. Electron collisions -- Elastic collisions -- Inelastic collisions -- Electron loss processes -- 3. Boltzmann equation for an ionized gas -- Distribution functions -- Higher order terms -- Limits of diffusion theory -- 4. Breakdown theory, constant collision frequency -- Breakdown criteria -- Constant collision frequency -- 5. Breakdown theory, variable collision frequency -- Neon -- Neon-argon -- Argon, krypton, and xenon -- 6. Nonuniform and magnetic fields -- Nonuniform electric fields -- Magnetic fields -- 7. Experimental methods -- Microwave systems -- Vacuum systems -- 8. Breakdown in the atmosphere -- Experimental data -- Attachment-controlled breakdown -- Attachment--diffusion theory -- Breakdown near reentry vehicles -- Laser breakdown.