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Author: Robert E. Huffman Publisher: ISBN: Category : Electron impact ionization Languages : en Pages : 50
Book Description
The present state of our knowledge concerning the formation of positive and negative ions in the earth's normal ionosphere is reviewed. The main process by which positive ions and electrons are formed in the ionosphere is photoionization of neutral constituents by solar vacuum ultraviolet radiation. Negative ions are formed primarily by direct attachment of electrons to certain neutral constituents. Existing values of the cross sections and rate coefficients of these processes are presented and gaps in the present knowledge are discussed.
Author: Robert E. Huffman Publisher: ISBN: Category : Electron impact ionization Languages : en Pages : 50
Book Description
The present state of our knowledge concerning the formation of positive and negative ions in the earth's normal ionosphere is reviewed. The main process by which positive ions and electrons are formed in the ionosphere is photoionization of neutral constituents by solar vacuum ultraviolet radiation. Negative ions are formed primarily by direct attachment of electrons to certain neutral constituents. Existing values of the cross sections and rate coefficients of these processes are presented and gaps in the present knowledge are discussed.
Author: M. H. Rees Publisher: Cambridge University Press ISBN: 9780521368483 Category : Science Languages : en Pages : 304
Book Description
A multitude of processes that operate in the upper atmosphere are revealed by detailed physical and mathematical descriptions of the interactions of particles and radiation, temperatures, spectroscopy and dynamics.
Author: A. Danilov Publisher: Springer Science & Business Media ISBN: 1468417460 Category : Science Languages : en Pages : 302
Book Description
I was very happy to learn that Plenum Press has decided to publish an English edition of Chemistry of the Ionosphere. Although the book was largely intended for the Soviet reader in order to fill some gaps in Russian-language reviews on aeronomic problems, I hope that it may be useful to foreign specialists engaged in iono spheric research as well. Naturally, during the time which has elapsed since the preparation of the Russian edition new studies have been published in the world literature on the problems dealt with in this book. The most important of these are noted in the ap pendix to this edition, but some problems (for example, with respect to the physics of negative ions in the lower ionosphere) require a radical reexamination, which cannot be done in a brief appendix. I will be pleased if publication of the book in English will as sist in removing some of the currently existing ambiguities in basic problems of upper atmosphere chemistry. A. D. Danilov Preface to the Russian Edition 1 In the last decade surprising successes have been achieved in the study of the earth's upper atmosphere by use of rockets and artificial satellites. These investigations have made it clear that the upper atmosphere (and particularly the ionospheric region at altitudes 100-1000 km) is a considerably more complex formation than could be visualized prior to the advent of active studies with space vehicles.
Author: Franklin E. Niles Publisher: ISBN: Category : Languages : en Pages : 37
Book Description
The hydrated protons observed in the earth;s upper atmosphere are thought to be formed by a series of reactions with either NO(+) or O2(+) as the principal precursor ion. The reactions involve positive ion-neutral association, switching of a neutral moelcule clustered to the positive ion with another neutral molecule, and the creation of a new positive ion through ion-neutral rearrangement. Rate coefficients measured in various laboratories are given. Steric representations for the cluster ions are presented and used to describe possible mechanisms for the reactions. The manner in which either HO2 or OH, but not H, can react with NO(+)(H2O), to provide a possible fast path to H(+)(H2O) is discussed. (Author).
Author: Publisher: ISBN: Category : Languages : en Pages : 14
Book Description
The main focus of research under AFOSR Grant F49620-92-J-0092 is to investigate the global and local transport of metallic ions in the upper atmosphere, in particular the layering of ionization, through use of comprehensive numerical models which account for realistic meteoric sources, chemical conversions and sinks, and transport by molecular and eddy diffusion, winds, and electric fields. The ultimate goal is to better understand the mechanisms producing ionization layers, and ultimately the seasonal, latitudinal, local time, and temporal variations in the occurrences of ionization layers. Plasma layering can affect HF communications by introducing new reflection paths thus complicating the propagating modes, and presumably in extreme cases by producing blanketing effects. In addition, plasma irregularities may also accompany the sharp gradients characterizing the plasma layers.
Author: Billy McCormac Publisher: Springer Science & Business Media ISBN: 9401025428 Category : Science Languages : en Pages : 391
Book Description
This book contains the lecmres presented at the Summer Advanced Study Institute, 'Physics and Chemistry of Upper Atmospheres' which was held at the University of Orleans, Orleans, France, during the period July 31 through August 11,1972. One hundred thirty nine persons from 14 different countries attended the Institute. The authors and the publisher have made a special effort for rapid publication of an up-to-date status of the particles, fields, and processes in the earth's magnetosphere, which is an ever changing area. Special thanks are due to the lecturers for their diligent preparation and excellent presentations. The individual lectures and the published papers were deliberately limited; the authors' cooperation in conforming to these specifications is greatly appreciated. The contents of the book are organized by sub ject area rather than in the order in which papers were presented during the Institute. Many thanks are due to Warren Berning, Donald M. Hunten, Edward Llewellyn, J. Ortner, Henry Rishbeth, Harold I Schiff, Lance Thomas, Alister Vallance Jones, and Gilbert Weill, who served as session chairmen during the Institute and contributed greatly to its success by skillfully directing the discussion period in a stimulating manner after each lecture.
Author: Walter Dieminger Publisher: Springer Science & Business Media ISBN: 3642787177 Category : Science Languages : en Pages : 1023
Book Description
Especially due to the increasing environmental problems there is a need to collect as many data as possible in the upper atmosphere. This book serves as a general multidisciplinary guide and introduction for a more effective use of the large amount of now available data from the Earth's atmosphere. It also shows the problems of the use of large amounts of time series data - for basic science as well as for environmental monitoring - and the related information systems. The book is aimed for scientists and students interested in the Earth's atmosphere which is vital for the understanding of environmental changes in the global system Earth.
Author: Robert E. Huffman
Author: Robert E. Huffman
Author: M. H. Rees
Author: W. W. Hunt
Author: A. Danilov
Author: Franklin E. Niles
Author: 
Author: Billy McCormac
Author: Shiv Kumar
Author: S.A. Bowhill
Author: Walter Dieminger