On The Impedance Method For Measuring High Electron Density And Electron Collision Frequency In A Gaseous Plasma Column
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On The Impedance Method For Measuring High Electron Density And Electron Collision Frequency In A Gaseous Plasma Column
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Author : Denis M. Coffey
language : en
Publisher:
Release Date : 1965
On The Impedance Method For Measuring High Electron Density And Electron Collision Frequency In A Gaseous Plasma Column written by Denis M. Coffey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Electron distribution categories.
An analysis of a microwave impedance method for measuring electron density and effective electron collision frequency in a plasma column is reviewed. It is evident from laboratory observations that surface polarization effects may be present in the impedance method. Such a consideration alters the form of the usual expression for the complex dielectric constant of an ionized gas. (Author).
On The Impedance Method For Measuring High Electron Density And Electron Collision Frequency In A Gaseous Plasma Column
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Author : Denis M. Coffey
language : en
Publisher:
Release Date : 1965
On The Impedance Method For Measuring High Electron Density And Electron Collision Frequency In A Gaseous Plasma Column written by Denis M. Coffey and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Gases categories.
An analysis of a microwave impedance method for measuring electron density and effective electron collision frequency in a plasma column is reviewed. It is evident from laboratory observations that surface polarization effects may be present in the impedance method. Such a consideration alters the form of the usual expression for the complex dielectric constant of an ionized gas. (Author).
Directivity And Beamwidth Approximations For Large Scanning Dolph Chebyshev Arrays
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Author : Charles J. Drane (Jr.)
language : en
Publisher:
Release Date : 1965
Directivity And Beamwidth Approximations For Large Scanning Dolph Chebyshev Arrays written by Charles J. Drane (Jr.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Antenna radiation patterns categories.
Directivity and beamwidth for radiation patterns corresponding to the optimum Dolph-Chebyshev design have heretofore been determined by means of formulas that, although exact, are intractable to computation and not particularly open to physical interpretation. Approximate but accurate formulas are presented here in closed form, for the purpose of easy examination and computation of directivity and beamwidth for large scannable Dolph-Chebyshev arrays. Array length, number of array elements, the spacing of these elements, and the sidelobe level desired are parameters in this study. The maximum achievable directivity for Chebyshev arrays is in principle limited, regardless of how large the array becomes. Data is given to establish the array length required to obtain a value of directivity at some prescribed level below the maximum value. Comparisons between exact and approximate theory are presented in graphical form in such a way as to illustrate the lower limits of array size for which the approximations are valid. Element spacings less than a half-wavelength are included in this study. (Author).
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1972
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with Aeronautics categories.
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
A Discussion Of The Wheeler Feynman Absorber Theory Of Radiation
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Author : Ronald G. Newburgh
language : en
Publisher:
Release Date : 1965
A Discussion Of The Wheeler Feynman Absorber Theory Of Radiation written by Ronald G. Newburgh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Absorption categories.
The Wheeler-Feynman absorber theory of radiation is reviewed. A proof is offered to show that a sum of advanced and retarded effects from the absorber can provide the origin of radiative reaction. This proof is different from and perhaps simpler than that of Wheeler and Feynman. From arguments of momentum and energy conservation the necessity of the absorber for the emission of radiation is demonstrated for three cases. (Author).
Space Electricity
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Author : R. C. Sagalyn
language : en
Publisher:
Release Date : 1965
Space Electricity written by R. C. Sagalyn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Atmosphere, Upper categories.
Technical Abstract Bulletin
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Author :
language : en
Publisher:
Release Date :
Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Science categories.
Characteristic Wave Cataloguing For Ray Path Determination
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Author : Yūji Inoue
language : en
Publisher:
Release Date : 1965
Characteristic Wave Cataloguing For Ray Path Determination written by Yūji Inoue and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Geomagnetism categories.
Wave cataloguing suitable for ray tracing of a pulsed wave packet in a weakly-dissipative, horizontallystratified magnetoionic medium is described, Particular attention is devoted to the cataloguing of the various characteristic waves so that the influence of the local ionization density and collision frequency can be understood. The procedure presented is applicable under general incident conditions and complex refractive index surfaces. The Booker quartic equation is used to derive the unambiguous wave normals and wave identification is obtained from the dispersion equation. A modified CMA. diagram including collisions is illustrated. (Author).
Substituted Perinaphthenyl Anion Radicals
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Author : Tapan K. Mukherjee
language : en
Publisher:
Release Date : 1965
Substituted Perinaphthenyl Anion Radicals written by Tapan K. Mukherjee and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Anions categories.
Plurality Count Diversity Combining For Fading M Ary Transmissions
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Author : John N. Pierce
language : en
Publisher:
Release Date : 1965
Plurality Count Diversity Combining For Fading M Ary Transmissions written by John N. Pierce and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Alphabets categories.
The performance of a plurality-count diversity combiner for fading M-ary transmissions is analyzed, and calculated error probabilities are presented graphically for alphabet sizes of 2, 8, and 32. The performance is shown to be within 3 dB of that of an optimum square-law combiner for moderate alphabet sizes when there is no restriction on the allowable number of diversity branches. It is shown that a worthwhile saving in transmitted power can be effected by using nonbinary alphabets with plurality-count combining for the transmission of binary data. The availability of extra information from the combiner for use with error-correction is discussed.