Advances in Atomic and Molecular Physics (eBook)

Cover 1
Contents 6
Chapter 1. The Selected Ion Flow Tube (SIFT): Studies of Ion-Neutral Reactions 10
I. Introduction 10
II. Principles and Experimental Aspects of the SIFT Technique 12
III. SIFT Studies of Ion-Neutral Reactions: Some Illustrative Results 32
IV. The Variable-Temperature Selected Ion Flow Drift Tube, VT-SIFDT 42
V. VT-SIFDT Studies: Some Illustrative Results 48
VI. Concluding Remarks 53
References 55
Chapter 2. Near-Threshold Electron-Molecule Scattering 60
I. Introduction and Overview 61
II. Basic Quantum Mechanics of Low-Energy Electron-Molecule Scattering 65
III. Approximate Collision Theories and Their Woes near Threshold 84
IV. The Behavior of Near-Threshold Cross Sections–Explained 97
V. Beyond–the Born-Oppenheimer Approximation: Special Methods for Near-Threshold Scattering 124
VI. Variations on an Enigma: Threshold Structures in Vibrational Excitation Cross Sections 140
VII. Conclusions and Conundrums 152
Acknowledgments 153
Appendix A: Notation and Nomenclature 153
Appendix B: Recent Reviews of Electron-Molecule Scattering 159
References 160
Chapter 3. Angular Correlation in Multiphoton Ionization of Atoms 166
I. Introduction 166
II. Theory of Photoelectron Angular Distributions 170
III. Experimental Methods 183
IV. Applications to Atomic Structure and Dynamics 192
V. Conclusions 225
Acknowledgments 226
References 227
Chapter 4. Optical Pumping and Spin Exchange in Gas Cells 232
I. Introduction 233
II. Optical Pumping 233
III. Description of Spin-Polarized Atoms in Optical Pumping Experiments 238
IV. Detection of Polarized Atoms 242
V. Spin-Transfer Collisions 247
VI. Relaxation 252
VII. Frequency Shifts 263
VIII. Applications 266
References 274
Chapter 5. Correlations in Electron-Atom Scattering 278
I. Introduction 278
II. Excitation 279
III. Ionization 301
Acknowledgments 326
References 326
Index 332