Electron Ionization
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Electron Ionization
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Author : Tilmann D. Märk
language : en
Publisher: BoD – Books on Demand
Release Date : 2010
Electron Ionization written by Tilmann D. Märk and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with Collisions (Nuclear physics) categories.
Electron Impact Ionization
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Author : T.D. Märk
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Electron Impact Ionization written by T.D. Märk and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Science categories.
It is perhaps surprising that a process which was one of the first to be studied on an atomic scale, and a process which first received attention over seven decades ago, continues to be the object of diverse and intense research efforts. Such is the case with the (seemingly) conceptually simple and familiar mechanism of electron impact ionization of atoms, molecules, and ions. Not only has the multi-body nature of the collision given ground to theoretical effort only grudgingly, but also the variety and subtlety of processes contributing to ionization have helped insure that progress has come only with commensurate work: no pain - no gain. Modern experimental methods have made it possible to effectively measure and explore threshold laws, differential cross sections, partial cross sections, inner-shell ionization, and the ionization of unstable species such as radicals and ions. In most instances the availability of experimental data has provided impetus and guidance for further theoretical progress.
Electron Impact Phenomena
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Author : F. H. Field
language : en
Publisher: Academic Press
Release Date : 2013-10-22
Electron Impact Phenomena written by F. H. Field and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-22 with Science categories.
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.
Electron Ionization Relevance To Planetary Atmospheres
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Author : Siddharth H. Pandya
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-03
Electron Ionization Relevance To Planetary Atmospheres written by Siddharth H. Pandya and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-03 with categories.
The present book is in continuation of our sincere efforts towards the applications of electron scattering cross sections (Volume-I), in the modeling of various planetary atmospheres. In this backdrop the present book focuses on important applications of our calculated ionization cross sections in various planetary environments. As a case study, electron ionization for N2 and O2 are calculated and employed to compute the ionization mean fee path and ionizing collision frequencies for the incident electrons in the D and E regions of the Earth's ionosphere. Further in the ionospheres of Mars and Titan, ion production rates (IPR) are calculated, and also shown the diurnal variation in the IPR along with the solar zenith angle for Mars.
Single And Multiple Ionization Of Atoms And Ions By Electron Impact
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Author : Viateheslav P. Shevelko
language : en
Publisher: CRC Press
Release Date : 2000-03-09
Single And Multiple Ionization Of Atoms And Ions By Electron Impact written by Viateheslav P. Shevelko and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-03-09 with Science categories.
Reporting to the West on significant developments in physics research, this journal presents reviews by eminent scientists from the former Soviet Union and will be of particular interest to research scientists who do not read Russian. Single and Multiple ionization processes in collision of atoms, positive and negative ions colliding with electrons are considered in a wide range of incident-electron enerfies. Physical properties and scaling laws of the total ionization cross-sections are studied on the basis of available experimental data and theoretical approaches. Analytical formulae and fitting parameters for the ionization cross-sections and Maxwellian rate coefficients are given and these can be used for different physical applications. The role of electron-ionization in ion-atom collisions, which is of improtance in problems of accelerator physics, is also considered. Multiple ionization of atoms and ions by electron impact are studies in terms of the number of ejected electrons, the total number of the target electrons and threshold ionization energy.
Theory Of Ionization Of Atoms By Electron Impact
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Author : Raimonds K. Peterkop
language : en
Publisher:
Release Date : 1977
Theory Of Ionization Of Atoms By Electron Impact written by Raimonds K. Peterkop and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with categories.
Coincidence Studies Of Electron And Photon Impact Ionization
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Author : C.T. Whelan
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Coincidence Studies Of Electron And Photon Impact Ionization written by C.T. Whelan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-06-29 with Science categories.
The great advantage of coincidence measurements is that by suitable choice of the kinematical and geometrical arrangement one may probe delicate physical effects which would be swamped in less differential experiments. The measurement of the triple dif ferential and higher-order cross sections presents enormous technical difficulties, but refined experiments of this type provide an insight into the subtleties of the scattering process and offer a welcome, if severe, test of the available theoretical models. The last few years have been an exciting time to work in the field and much has been learned. Profound insights have been gleaned into the basic Coulomb few body problem in atomic physics: the experimental study of the fundamental (e,2e) processes on hydrogen and helium targets continues to add to our knowledge and indeed to challenge the best of our theoretical models; significant advances have been made in the understanding of the "double excitation problem," that is the study of ionization processes with two active target electrons: important measurements of (e,3e), (,),,2e), excitation-ionization and excitation autoionization have been reported and strides have been made in their theoretical description; the longstanding discrepancies between theory and experiment for relativistic (e,2e) processes were resolved, spin dependent effects predicted and ob served and the first successful coincidence experiments on surfaces and thin films were announced. Theory and experiment have advanced in close consort. The papers pre sented here cover the whole gambit of research in the field. Much has been achieved but much remains to be done.
High Resolution Experiments On Strong Field Ionization Of Atoms And Molecules
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Author : Lutz Fechner
language : en
Publisher: Springer
Release Date : 2016-04-26
High Resolution Experiments On Strong Field Ionization Of Atoms And Molecules written by Lutz Fechner and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-04-26 with Science categories.
In this thesis, the ionization of atoms and small molecules in strong laser fields is experimentally studied using a reaction microscope. The population of autoionizing doubly excited states in the laser fields is proven and a possible connection to the well-known dielectronic recombination processes is discussed. The fundamental process of tunnel ionization in strong laser fields is subject of investigation in a pump-probe experiment with ultrashort laser pulses. A coherent superposition of electronic states in singly charged argon ions is created within the first, and subsequently tunnel-ionized with the second pulse. This gives access to state-selective information about the tunneling process and allows to test common models. Moreover, the ionization of krypton and argon at different wavelengths is studied, from the multiphoton to the tunneling regime. The wavelength-dependent investigations are furthermore extended to molecular hydrogen. In addition to ionization, this system might undergo different dissociative processes. Channel-selective electron momentum distributions are presented and compared to each other.
Analysis Of Excitation And Ionization Of Atoms And Molecules By Electron Impact
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Author : Afzal Chaudhry
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-10-17
Analysis Of Excitation And Ionization Of Atoms And Molecules By Electron Impact written by Afzal Chaudhry and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-10-17 with Science categories.
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.
Atomic Molecular Ionization By Electron Scattering
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Author : K. N. Joshipura
language : en
Publisher: Cambridge University Press
Release Date : 2019-01-24
Atomic Molecular Ionization By Electron Scattering written by K. N. Joshipura and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-24 with Science categories.
Covers quantum scattering theories, experimental and theoretical calculations and applications in a comprehensive manner.