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Physics - Quantum Physics | Physics of Atoms and Ions

Physics of Atoms and Ions

Smirnov, Boris M.

2003, XIII, 443 p.

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Intended for advanced students of physics, chemistry, and related disciplines, this text treats the quantum theory of atoms and ions within the framework of self-consistent fields. It treats the structure and spectra of atoms and ions, their behavior in external fields, and their interactions, including collisions. Data needed for the analysis of collisions and other atomic processes are also included, making the book useful as a reference for researchers as well as students. In the main text, simple and convincing methods are used to explain the fundamental properties of atoms, molecules, and clusters; details and more advanced aspects of these topics are treated in the problems at the end of each chapter. The first part of the book is devoted to properties of atoms and ions considered as quantum systems of electrons orbiting a heavy Coulomb center. Self-consistent fields and the shell model give a logical and consistent picture, and provide reliable models for the analysis of atomic properties. The second part deals with interactions and collisions of particles -- including bound systems, such as molecules, clusters, and solids. The aim here is to relate the internal structure of the atoms to the interactions between them, providing useful insights for applications; the accompanying data in tables, charts, and spectra complement the theoretical discussion.

Content Level » Graduate

Keywords » Cross section - Pauli exclusion principle - Thomas-Fermi model - atomic wave function - elastic scattering - excitation transfer - long-range interaction - metallic cluster - metastable - multicharged ions - positive ions - quasidiscrete electron term - quenching - scattering - spin exchange

Related subjects » Atomic, Molecular, Optical & Plasma Physics - Materials - Physical Chemistry - Quantum Physics

Table of contents 

Preface. Part 1. QUANTUM MECHANICS AND STRUCTURE OF ATOMS AND IONS. Chapter 1. The development and concepts of atomic physics. Chapter 2. Hydrogen atom. The system of atomic units. Electron states of hydrogen atom. Chapter 3. Two-electron atoms and ions. Pauli exclusion principle and the symmetry of atomic wave functions. Chapter 4. Light atoms. Quantum numbers of light atoms. The atom shell model. Parentage scheme of atom. Chapter 5. Structure of heavy atoms. Atoms with valent d- and f-electrons. Thomas-Fermi model of atom. Chapter 6. Excited atoms. Metastable and resonantly excited states of atoms. Chapter 7. Positive and negative ions. Positive ions. Multicharged ions. Negative ions. Chapter 8. Autoionization states of atoms and ions. Part 2. ATOMS IN INTERACTIONS AND COLLISIONS. Chapter 9. Atoms in external .elds. Atom in magnetic .eld. Atom in electric .eld. Atom decay of atom in electric .eld. Problems 9.1-9.11. Chapter 10. Interactions involving atoms and ions. Long-range interaction of atoms. Ion-atom exchange interaction at large separations. Method LCAO. Exchange interaction of atoms at large separations. Repulsion interaction of atoms with .lled electron shells. Exchange interaction of di.erent atoms. Problems 10.1-10.11. Chapter 11. Atom interaction in molecules. Quantum numbers and types of bonds in diatomic molecules. Correlation diagrams for correspondence between molecular and atomic states. Parameters of dimers and their ions. Method of molecular orbits. Radiative transitions in diatomic molecules. Problems 11.1 -11.5. Chapter 12. Atom interaction in systems of many bound atoms. Exchange interaction of three hydrogen atoms. Character of interaction of atoms in bulk inert gases. Short-range interaction in many-atom systems. Clusters with a short-range interaction of atoms. Jelium model of metallic clusters. Problems 12.1, 12.2. Chapter 13. Elastic collisions of atomic particles. Elastic scattering of classical atomic particles. Scattering of atoms in a sharply varied interaction potential. Capture of particles in an attractive interaction potential. Scattering of quantum particles. Phase theory of elastic scattering. Total cross section of scattering. Oscillations in quasiclassical cross sections. Elastic collisions involving slow electrons. Problems 13.1-13.5. Chapter 14. Resonant processes in slow atomic collisions. Speci.cs of slow inelastic atomic collisions. Resonant charge exchange process. Resonant charge exchange with transition of p-electron. Coupling of electron momenta in the resonant charge exchange process. Spin exchange. Excitation transfer. The matching method. Depolarization of atoms in collisions. Relaxation of atomic momenta in isotropic collisions. Transitions between states of multiplet structure. Problems 14.1- 14.4. Chapter 15. Inelastic slow atomic collisions. Transitions in two-level system. Cross section of nonresonant charge exchange. Principle of detailed balance for excitation and quenching processes. Quenching of excited atom states by ion impact. Quenching of highly excited atoms in atomic collisions. Collisional quenching of metastable states. Problems 15.1, 15.2. Chapter 16. Collisional transitions involving states of continuous and quasicontinuous spectrum. Concept of quasidiscrete electron term. Electron attachment to molecules. Mutual neutralization at collisions of positive and negative ions. Collisional transitions involving multicharged ions. Associative ionization and Penning process. Collisional ionization involving resonantly excited atoms. Collisional ionization of highly excited atoms. Electron attachment to molecules. Problems 16.1-16.4. Appendices. References. Subject index.

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