The Advanced Study Institute (ASI) on "Linking the Gaseous and Condensed Phases of Matter: The Behavior of Slow Electrons" was held at Patras, Greece, September 5-18, 1993. The organizers of the Patras ASI felt that the study of the electronic properties of matter in various states of aggregation has advanced to a point where further progress required the interfacing of the phases of matter in order to find out and to understand how the microscopic and macroscopic properties of materials and processes change as we go from low pressure gas to the condensed phase. This approach is of foremost significance both from the point of view of basic research and of applications. Linking the electronic properties of the gaseous and condensed phases of matter is a fascinating new frontier of science embracing scientists not only from physics and chemistry but also from the life sciences and engineering. The Patras ASI brought together some of the world's foremost experts who work in the field of electronic properties of molecular gases, clusters, liquids, and solids. The thirty five lectures given at the meeting as well as the twenty nine poster papers presented and the formal and informal discussions that took place focused largely on the behavior of slow electrons in matter.

Linking the Gaseous and the Condensed Phases of Matter: The Slow Electron and Its Interactions.- Comparisons Between Low-Energy Electron Scattering from Gaseous and Condensed-Phase Atoms and Molecules.- Anion Formation in Low Energy Electron Impact to Gaseous and Condensed Molecules.- Ionization of Atoms or Molecules by Radiation as a Function of Phase.- High Energy Ionization in Liquids - The Free Ion Yield.- Photo- and Penning Ionization of Molecules in the Gas Phase and in the Liquid Phase.- Positron and Positronium Annihilation in Gases and Liquids.- Self Trapping of Light Particles in Fluids: The Path Integral Approach.- Clusters: An Introduction.- Mechanisms and Kinetics of Electron Impact Ionization of Atoms, Molecules, and Clusters.- Photofragmentation as a Probe of Electron Thermalization in Size-Selected Cluster Anions.- Multiphoton Ionization Studies of Van der Waals Molecules and Clusters.- Core Level Excitation in Free Clusters: NEXAFS, EXAFS, and Coulomb Explosion.- Reaction in the NO2-C2H4 Van der Waals Complex.- Phase Transitions in Clusters: A Bridge to Condensed Matter.- Exploring Potential Surface Landscapes and How They Govern Dynamics.- Density and Field Dependence of Excess Electron Mobility in HighDensity Noble Gases.- Excess Electron Localization in High-Density Neon Gas.- Boltzmann Equation for Slow Electron Transport in Gases and Liquids.- Electron Scattering in Dense Gases and Liquids and Related Phenomena.- Multiple Scattering of Electrons in Polar Gases-Evidence for Short Living Dipole-Bound Electron States in CH3CN.- Thermodynamics of Electron Injection.- Electron Attachment to Molecules.- Effects of the Solid Phase on Resonance Stabilization, Dissociative Attachment and Dipolar Dissociation.- Photoinduced Dissociative Electron Capture Processes in Binary Ion-Molecule Complexes.- Electron Attachment to Excited Molecules.- Electron Reactions in Nonpolar Liquids-Pressure Effects.- Thermodynamic Properties of the Electron.- The Theory of Electron Attachment to Molecules.- Electron-Ion Recombination in Dense Molecular Media.- FALP Studies of Electron-Ion Recombination and Electron Attachment.- The Theory of Electron-Ion Recombination.- Low Energy Electrons for the Investigation of Liquid Surfaces.- Photoelectron Spectroscopy at Liquid Water Surfaces.- Light-Induced Electron Emission from Surfaces of Organic Liquids.- Physics of Noble Gas X-Ray Detectors: A Monte Carlo Simulation Study.- A. Carcinogen-Screening Test Based on Electrons.- Summary of the Discussion Panel on Experimental Techniques.- Theory: Interactions of Electrons With Dense Media.- The Behavior of Slow Electrons in Molecular Substances and Its Significance in Radiation and Life Sciences.- Participants.- Conference Picture.