techniques, and raises new issues of physical interpretation as well as possibilities for deepening the theory. (3) Barut contributes a comprehensive review of his own ambitious program in electron theory and quantum electrodynamics. Barut's work is rich with ingenious ideas, and the interest it provokes among other theorists can be seen in the cri tique by Grandy. Cooperstock takes a much different approach to nonlinear field-electron coupling which leads him to conclusions about the size of the electron. (4) Capri and Bandrauk work within the standard framework of quantum electrodynamics. Bandrauk presents a valuable review of his theoretical approach to the striking new photoelectric phenomena in high intensity laser experiments. (5) Jung proposes a theory to merge the ideas of free-free transitions and of scattering chaos, which is becoming increasingly important in the theoretical analysis of nonlinear optical phenomena. For the last half century the properties of electrons have been probed primarily by scattering experiments at ever higher energies. Recently, however, two powerful new experimental techniques have emerged capable of giving alternative experimental views of the electron. We refer to (1) the confinement of single electrons for long term study, and (2) the interaction of electrons with high intensity laser fields. Articles by outstanding practitioners of both techniques are included in Part II of these Proceedings. The precision experiments on trapped electrons by the Washington group quoted above have already led to a Nobel prize for the most accurate measurements of the electron magnetic moment.
Inhaltsverzeichnis
I : Theory. - Scattering of Light by Free Electrons as a Test of Quantum Theory. - Zitterbewegung in Radiative Processes. - Charged Particles at Potential Steps. - New Solutions of the Dirac Equation for Central Fields. - The Role of the Duality Rotation in the Dirac Theory. - Brief History and Recent Developments in Electron Theory and Quantumelectrodynamics. - The Explicit Nonlinearity of Quantum Electrodynamics. - On the Mathematical Procedures of Selffield Quantumelectrodynamics. - Non-Linear Gauge Invariant Field Theories of the Electron and Other Elementary Particles. - How to Identify an Electron in an External Field. - The Electron and the Dressed Molecule. - Scattering Chaos in the Harmonically Driven Morse System. - II: Experiment. - Experiments with Single Electrons. - Experiments on the Interaction of Intense Fields with Electrons. - Ionization in Linearly and Circularly Polarized Microwave Fields. - Multiple Harmonic Generation in Rare Gases at High Laser Intensity. - Absorption and Emission of Radiation During Electron Excitation of Atoms. - Penning Ionization in Intense Laser Fields. - Microwave Ionization of H Atoms: Experiments in Classical and Quantal Dynamics. - The Electron 1990 Workshop List of Participants.
