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Full Description
During the last ten years an unprecedented effort has been directed towards study of the dynamics of ion collision phenomena in the gas phase, usually with a view to applications in diverse areas, ranging from fusion reactors and lasers to ionospheric and interstellar chemistry and gaseous electronics. The principal aim of this volume is to present a succinct overview of contemporary interests and trends in the field of low energy ion-electron and ion-atom (molecule) collision physics, with emphasis on fundamental aspects. Researchers and students will become acquainted, in a general and fairly non-specialized fashion, with recent progress in this area of continuing intense activity. The material is divided into two parts, dealing with atomic ions and molecular ions. Each of the nine chapters has been prepared by authors who are amongst the most eminent practitioners of contemporary ion collision physics. The book is dedicated to Professor J.B. Hasted, one of the pioneering workers who, in the course of his forty year career, helped establish atomic collision physics as a field in its own right.
Contents
1. Introduction.- 1.1 The Need to Study Ion Impact Phenomena.- 1.2 Some Contemporary Ion Production Techniques.- 2. Ion Formation Processes: Ionization in Ion-Electron Collisions.- 2.1 Theoretical Methods.- 2.2 Ionization Mechanisms.- 2.3 Experimental Approaches.- 2.4 Single Ionization Cross Section Data.- 2.5 Multiple Ionization Cross Section Data.- 2.6 A Unified Picture of Ionization.- 2.7 Conclusions.- 3. Ion-Neutral Reactions: Collision Spectrometry of Multiply Charged Ions at Low Energies.- 3.1 Dynamics of Collisions.- 3.2 Theoretical Aspects.- 3.3 Experimental Techniques.- 3.4 Discussion of Translational Energy Spectrometry.- 3.5 Discussion of State-Selective Differential Electron Capture Cross Sections.- 4. Energy Spectrometry of Fine-Structure Transitions in Ion-Atom Collisions.- 4.1 High-Resolution Ion Translational Energy Spectrometry.- 4.2 Fine-Structure Transitions in Ne+, Ar+ and Kr+.- 4.3 Excitation and De-excitation Processes in Doubly Charged Rare Gas Ions.- 4.4 The Role of Fine-Structure States in Electron Capture Reactions.- 5. Probing Interaction Potentials: Small Angle Differential Scattering of H+ and H with He.- 5.1 Experimental Method.- 5.2 Theoretical Considerations.- 5.3 Results and Discussion.- 5.4 Summary.- 6. High-Resolution Translational Energy Spectrometry of Molecular Ions.- 6.1 Some Typical Experimental Arrangements.- 6.2 Results and Discussion.- 7. Molecular Ionization Energies by Double Charge Transfer Spectrometry.- 7.1 Apparatus and Experimental Techniques.- 7.2 Studies of Electronic States of Doubly Charged Ions.- 7.3 Studies of Large Molecules.- 7.4 Reaction Window for Double Electron Capture.- 7.5 Single Ionization Energies of Radical Species.- 8. Studies of Multiply Charged Molecules by Ion Collision Techniques and Ab Initio Theoretical Methods.- 8.1 Stability of Multiply Charged Molecular Ions.- 8.2 Contemporary Ion-Impact Methods of Studying Multiply Charged Molecules.- 8.3 Other Experimental Techniques.- 8.4 Theoretical Description of Molecular Ions.- 8.5 A Glimpse into the Real World of Multiply Charged Molecules: Ambiguities and Controversies.- 9. Dissociative Recombination in Ion-Electron Collisions: New Directions.- 9.1 New Developments in the Merged Beam Technique.- 9.2 Detection of Highly Excited States.- 9.3 Measurements of Branching Ratios.- 9.4 Recombination Studies at Storage Rings.- 9.5 Heavy Ions.- 9.6 Epilogue.
