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Computational Atomic Physics: Electron and Positron Collisions with Atoms and Ions

✍ Scribed by Klaus Bartschat (auth.), Professor Dr. Klaus Bartschat (eds.)


Publisher
Springer-Verlag Berlin Heidelberg
Year
1996
Tongue
English
Leaves
263
Edition
1
Category
Library

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✦ Synopsis


"Computational Atomic Physics" deals with computational methods for calculating electron (and positron) scattering from atoms and ions, including elastic scattering, excitation, and ionization processes. After an introductory chapter on atomic collision theory, two chapters are devoted to the bound-state wavefunctions. A description of perturbative methods is followed by discussions of the standard non-perturbative close-coupling theory, the R-matrix method, and the recently developed "convergent-close-coupling" approach. The details of calculating accurate Coulomb and Bessel functions are treated as well. Finally, the calculation of scattering amplitudes is discussed and an introduction to the density-matrix theory is given. The book provides a practical application of advanced quantum mechanics. The abstract equations of general scattering theory are reduced to numerically solvable differential and integral equations, and computer codes for the solution are provided. Numerous suggested problems in the text and ten programs on a diskette contribute to a deeper understanding of the field. The diskette The 10 program packages included on a 3 1/2" MS-DOS diskette are written in standard FORTRAN 77 and run on any computer that fulfills the following system requirements: 16MB RAM, MS-DOS 3.30 or higher; 486 DX processor with numerical coprocessor. The FORTRAN 77 source files allow for modification of the programs; therefore a FORTRAN 77 compiler is also needed. Example input and output files are provided for the text cases. * COREPOT core potentials * CIV3 atomic structure * DWBA first order distorted wave program for excitation * DWBIA first order distorted wave program for ionization * CCPA close-coupling for positron-atom scattering * RMATREX R-matrix program for electron-atom scattering * CCC convergent close-coupling * COUL90 Coulomb and Bessel functions

✦ Table of Contents


Front Matter....Pages I-XVII
Electron-Atom Scattering Theory: An Overview....Pages 1-14
Core Potentials for Quasi One-Electron Systems....Pages 15-26
Energies and Oscillator Strengths Using Configuration Interaction Wave Functions....Pages 27-64
The Distorted-Wave Method for Elastic Scattering and Atomic Excitation....Pages 65-86
Distorted-Wave Methods for Ionization....Pages 87-100
The Close-Coupling Approximation....Pages 101-135
The R-Matrix Method....Pages 137-159
Momentum-Space Convergent-Close-Coupling Method for a Model e-H Scattering Problem....Pages 161-180
The Calculation of Spherical Bessel and Coulomb Functions....Pages 181-202
Scattering Amplitudes for Electron-Atom Scattering....Pages 203-217
Density Matrices: Connection Between Theory and Experiment....Pages 219-246
Back Matter....Pages 247-249

✦ Subjects


Atomic, Molecular, Optical and Plasma Physics;Mathematical Methods in Physics;Numerical and Computational Physics;Simulation and Modeling


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