Advances in Atomic and Molecular Physics (eBook)

Front Cover 1
Advances in Atomic and Molecular Physics, Volume 22 4
Copyright Page 5
Contents 6
Chapter 1. Positronium—Its Formation and Interaction with Simple Systems 10
I. Introduction 10
II. Positronium Formation in Positron–Atom Scattering 11
III. The Interaction of Positronium with Simple Systems 31
IV. Concluding Remarks 42
References 43
Chapter 2. Experimental Aspects of Positron and Positronium Physics 46
I. Introduction 46
II. Annihilation Spectra for Positrons in Gases 48
III. Cross-Section Measurements with Positron Beams 61
References 81
Chapter 3. Doubly Excited States, Including New Classification Schemes 86
I. Introduction 86
II. Analysis of Radial and Angular Correlations 90
III. Classification of Doubly Excited States 105
IV. Solution of the Two-Electron Schrodinger Equation in Hyperspherical Coordinates 118
V. Body-Frame Analysis of Correlation Quantum Numbers 124
VI. Effects of Strong Electric Fields on Resonance Structures in H-Photodetachment 134
VII. Doubly Excited States of Multielectron Atoms 140
VIII. Concluding Remarks and Perspectives 147
References 149
Chapter 4. Measurements of Charge Transfer and Ionization in Collisions Involving Hydrogen Atoms 152
I. Introduction 152
II. Outline of Experimental Methods 153
III. Charge Transfer 161
IV. Ionization 191
V. Cross Sections for Electron Removal from Hydrogen Atoms in Collisions with Positive Ions 198
References 201
Chapter 5. Electron–Ion and Ion–on Collisions with Intersecting Beams 206
I. Introduction 206
II. Notes on Experimental Techniques 208
III. Ionization of Positive Atomic Ions by Electron Impact 210
IV. Measurements of Dielectronic Recombination 222
V. Measurements of Electron-Impact Excitation of Positive Ions 224
VI . Scattering of Electrons by Ions 231
VII . Collisions between Electrons and Negative Ions 233
VIII. Collisions between Electrons and Molecular Ions 235
IX. Collisions between Positive and Negative Ions 237
X. Collisions between Positive Ions 241
References 246
Chapter 6. Electron Capture by Simple Ions 252
I. Introduction 252
II. Theory 253
III. Experimental Background 270
IV. Typical Studies 275
V. Ion–Molecule Charge-Exchange Collisions: He++ H2 282
VI. Ion–Molecule Collisions: Other Systems 302
VII. Electron-Transfer-Excitation Collisions 314
References 319
Chapter 7. Relativistic Heavy-Ion–Atom Collisions 324
I. Introduction 324
II. Experiments 326
III. Ionization Processes 333
IV. Electron-Capture Processes 354
V. Collisions in Solid Targets 366
VI. X-Ray Continuum Processes 378
VII. Ultrarelativistic Collisions 383
VIII. Relativistic Few-Electron Ions in Quantum Electrodynamics Experiments 386
IX. Conclusions 388
References 390
Chapter 8. Continued-Fraction Methods in Atomic Physics 396
I. Introduction 396
II. Continued-Fraction Solutions to Linear Equations 398
III. Perturbation Theories 407
IV. The Density Matrix and Rate Equations 424
V. Conclusions 436
Appendix: Derivation of the Continued-Fraction Expansion of a Determinant 436
References 437
Index 442