Investigation Of Ionization And Dissociation Processes Produced By Electron Impact On Molecules
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Investigation of Ionization and Dissociation Processes Produced by Electron Impact on Molecules
Author | : Ce Ma |
Publsiher | : Unknown |
Total Pages | : 344 |
Release | : 1990 |
Genre | : Electron-molecule scattering |
ISBN | : IND:30000000840060 |
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Analysis of Excitation and Ionization of Atoms and Molecules by Electron Impact
Author | : Afzal Chaudhry,Hans Kleinpoppen |
Publsiher | : Springer Science & Business Media |
Total Pages | : 236 |
Release | : 2010-10-17 |
Genre | : Science |
ISBN | : 9781441969477 |
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The content of this book describes in detail the results of the present measurements of the partial and total doubly differential cross sections for the multiple-ionization of rare gas atoms by electron impact. These measurements show, beside other trends, the role of Auger transitions in the production of multiply ionized atoms in the region where the incident electron energy is sufficient to produce inner shell ionization. Other processes like Coster-Kronig transitions and shake off also contribute towards increasing the charge of the ions. The incident electron having energy of 6 keV, for example, in a collision with xenon atom can remove up to nine electrons! (*) X-ray-ion coincidence spectroscopy of the electron xenon atom collisions is also described. The present measurements of doubly differential cross sections for the dissociative and non-dissociative ionization of hydrogen, sulfur dioxide and sulfur hexa fluoride molecular gases by electron impact are also described in the text of this book. The results of the measurements for sulfur dioxide molecule show how this major atmospheric pollutant can be removed from the atmosphere by electron impact dissociation of this molecule. The present results of the measurements for sulfur hexa fluoride give an insight into the dissociation properties of this molecular gas, which is being so widely used as a gaseous insulator in the electrical circuits. The book also describes the present measurements of the polarization parameters of the fluorescence radiation emitted by the electron-impact-excited atoms of sodium and potassium. In these investigations the target atoms are polarized, therefore, the measurements of the polarization parameters give information about the electron atom interaction in terms of the interference, direct and exchange interaction channels.
Gaseous Molecular Ions
Author | : Eugen Illenberger,Jacques Momigny |
Publsiher | : Springer Science & Business Media |
Total Pages | : 357 |
Release | : 2013-03-09 |
Genre | : Science |
ISBN | : 9783662073834 |
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Most of the matter in our solar system, and, probably, within the whole universe, exists in the form of ionized particles. On the other hand, in our natural environ ment, gaseous matter generally consists of neutral atoms and molecules. Only under certain conditions, such as within the path oflightning or in several technical devices (e. g. gas discharges, rocket engines, etc. ) will some of the atoms and molecules be ionized. It is also believed that the chemistry of the earth's troposphere predomi nantly proceeds via reactions between neutral particles. (The complex system of atmospheric chemistry will be treated in one of the forthcoming volumes to this series. ) Why, then, are ions considered so important that hundreds oflaboratories all over the world (including some of the most prestigious) are involved in research pro grams on ions, covering many different facets, from biochemistry to physics? One may obtain as many different answers as there are research groups busy in this field. There is, however, one simple, common feature which makes it attractive to work with ions: since they carry one or more net elementary charges, they can easily be gui ded, focused or separated by appropriate electric and magnetic fields, and, last but not least, they can easily be detected. Apart from these advantages, which are welcome and appreciated by the researcher, the study of molecular ions can provide insight into very fundamental aspects of the general behavior of molecules.
Electron Impact Phenomena
Author | : F. H. Field,J. L. Franklin |
Publsiher | : Academic Press |
Total Pages | : 577 |
Release | : 2013-10-22 |
Genre | : Science |
ISBN | : 9781483275697 |
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Electron Impact Phenomena and the Properties of Gaseous Ions, Revised Edition deals with data pertaining to electron impact and to molecular gaseous ionic phenomena. This book discusses electron impact phenomena in gases at low pressure that involve low-energy electrons, which result in ion formation. The text also describes the use of mass spectrometers in electron impact studies and the degree of accuracy obtained when measuring electron impact energies. This book also reviews relatively low speed electrons and the transitions that result in the ionization of the atomic system. This text then discusses diatomic molecules whose mass spectra can be interpreted using the Franck-Condon principle. This selection also presents some examples of ions in solution that resemble the gaseous ions formed by electron impacts. The energies of these gaseous ions can be the key to understanding the mechanisms of ionic reactions. These examples include the olefin addition reactions and catalytic cracking. This text will prove invaluable for research chemists, students, and professors in chemistry and related fields such as organic chemistry and electrochemistry.
On an Extension of the Mass Spectrometric Method of Study of Ionization and Dissociation Processes in Diatomic Molecules Under Electron Impact and Its Application to the Study of Hydrogen Carbon Monoxide Nitric Oxide Nitrogen and Oxygen
Author | : Homer Dupre Hagstrum |
Publsiher | : Unknown |
Total Pages | : 304 |
Release | : 1940 |
Genre | : Ionization of gases |
ISBN | : MINN:319510011393176 |
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Ion Production by Electron Impact
Author | : Rowland Ivor Reed |
Publsiher | : Unknown |
Total Pages | : 266 |
Release | : 1962 |
Genre | : Collisions (Nuclear physics) |
ISBN | : UCAL:B3375349 |
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Mass Spectrometry Bulletin
Author | : Anonim |
Publsiher | : Unknown |
Total Pages | : 594 |
Release | : 1999 |
Genre | : Mass spectrometry |
ISBN | : CHI:52103432 |
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Journal of Research of the National Bureau of Standards
Author | : United States. National Bureau of Standards |
Publsiher | : Unknown |
Total Pages | : 730 |
Release | : 1947 |
Genre | : Chemistry |
ISBN | : UCR:31210014477960 |
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