Ch. 5: Moment Method for Solving the Boltzmann Equation
1. Introduction
2. Cautionary Notes about Moment Methods
3. General Moment Equations
4. Successive Approximations
5. Solutions by the Method of Weighted Residuals
6. Basis Functions in General
7. One-Temperature Basis Functions
8. Two-Temperature Basis Functions
9. Matrix Elements in the Two-Temperature Method
10. Successive Approximations to the Mobility, Diffusion and Reaction-Rate Coefficients
11. Three-Temperature Basis Functions
12. Three-Temperature Numerical Results
Ch. 6: Gram-Charlier Approach to Ion-Molecule Reactions
Ch. 7: Connections with Atomic Ion-Atom Interaction Potentials
1. Ab Initio Ion-Neutral Interaction Potentials
2. Transport Cross Sections and Computer Program PC
3. Kinetic Theory using Gram-Charlier Approach and Computer Program GC
4. Zero-Field Mobilities
5. Field-Dependent Mobilities
6. Status of Tests of Interaction Potentials
Ch. 8: Molecular Ion and Neutrals
1. Visualization of Atomic Ion Velocity Distribution Functions
2. Implications for Ion-Molecule Reactions in the Upper Atmosphere
3. Extensions of the Boltzmann Equation
4. Ab Initio Calculations for Atomic Ions in Diatomic Neutrals
5. Ab Initio Calculations for Diatomic Ions in Atomic Neutrals
6. A Simple Way Forward: The Monchick-Mason Approximation
7. Beyond the Monchick-Mason Approximation
Ch. 9: Summary and Prognosis
Appendix A: Mathematics
Index
Larry Viehland has been a Professor of Chemistry in the Department of Science at Chatham University since 1999, and was Chair of the Department of Science from 1999 to 2015. He previously held positions at Saint Louis University and Brown University, in addition to numerous visiting professorships around the world, following the completion of his PhD at the University of Wisconsin-Madison. His research is concerned with the development and application of kinetic theories that accurately describe the transport and reaction-rate coefficients of ions in gases and with developing and testing ion-neutral interaction potentials.
This book is about the drift, diffusion, and reaction of ions moving through gases under the influence of an external electric field, the gas temperature, and the number density. While this field was established late in the 19th century, experimental and theoretical studies of ion and electron swarms continue to be important in such varied fields as atomic and molecular physics, aeronomy and atmospheric chemistry, gaseous electronics, plasma processing, and laser physics. This book follows in the rigorous tradition of well-known older books on the subject, while at the same time providing a much-needed overview of modern developments with a focus on theory. Graduate students and researchers new to this field will find this book an indispensable guide, particularly those involved with ion mobility spectrometry and the use of ion transport coefficients to test and improve ab initio ion-neutral interaction potentials. Established researchers and academics will find in this book a modern companion to the classic references.