Atomic Spectra and Collisions in External Fields

I. Spectroscopy and Collision Physics of Atoms in D.C. Fields.- A. Magnetic Fields.- Laser Spectroscopy of the Diagmagnetic Hydrogen Atom in the Chaotic Regime.- Strongly Magnetized Atoms - in the Laboratory and in the Cosmos.- Implications of New Evidence on Quasi-Landau Spectra for a Unified Treatment of Collisions and Spectra.- Magnetic Rotation Spectroscopy with Synchrotrons and with Lasers.- Photoabsorption and Photoionization of an Atom in a Magnetic Field.- Atomic Diamagnetism.- Oscillations in Absorption Spectra of Atoms in Magnetic Fields.- Spectra of the Strongly Magnetized Hydrogen Atom Close to the Ionization Threshold.- Accurate Eigenergies for the Magnetized Hydrogen Atom.- Liapunov Exponents for the Diamagnetic Kepler Problem and the Transition from Regular to Irregular Motion.- Cross Section for Potential Scattering in the Presence of a Magnetic Feld and Limit for B?0.- The Hydrogen Atom in a Strong Magnetic Field.- B. Electric Fields.- The Hydrogen Atoms in Strong Electric Fields.- Quantum Beats in the Electric-Field Mixing of the n=2 States of Atomic Hydrogen.- Noble Gas Atoms in Strong DC Electric Fields.- An Atomic Interferometer.- Effect of Polarizability of Alkali Dimers in Electron and Positron Scattering.- C. Combined Electric and Magnetic Fields.- Highly Excited Barium Rydberg Atoms in External Electric, Magnetic, and Combined Fields.- Experimental Investigation and Analysis of Rydberg Atoms in the Presence of Parallel Magnetic and Electric Fields.- Negative Ion Photodetachment in a Static External Field.- Wavefunction Localization for the Hydrogen Atom in Parallel External Electric and Magnetic Fields.- II. Chaos In Atoms in D.C. And Low-Frequency Fields.- Some Aspects of Quantum Chaos.- Quantum Chaos: Destruction and Scars of Symmetries.-Stochastic Formulation of Energy Level Statistics: Application to the Hydrogen Atom in a Magnetic Field.- Highly Excited Hydrogen Atoms in Strong Microwaves.- Chaos in One-Dimensional Hydrogen.- Two-Frequency Microwave Quenching of Highly Excited Hydrogen Atoms.- III. Laser-Atom Interaction at High Intensities.- Atoms in Intense Optical Fields: Pondermotive Forces and Above-Threshold Ionization.- Electron Energy Spectra in High Intensity Multiphoton Ionization.- H2 in Intense Laser Radiation - Multiphoton Two Electron Direct Processes.- Multiphoton Ionization of Atomic Hydrogen by Extra Photons.- Strong-Field Excitation of Continuum Resonances.- Low-Energy Radiative Scattering in a Laser Field.- New Results on Multiphoton Free-Free Transitions.- Multichannel Multiphoton Ionization of the Hydrogen Atom by a Chaotic Field: Role of Polarization.- Participants.