The Advanced Study Institute on Breakdown and Discharges in Gases was held in Les Arcs, France, June 28 to July 10, 1981. The object of the Institute was to provide a broad but compre­ hensive presentation of the various topics in the field of Gaseous electronics. To achieve this goal, a number of lectures, seminars, and panel discussions were scheduled. Each topic was developed by two tutorial and/or review lectures, and brought to the present state of the topic by seminars and panel discussions. The program of topics and speakers was selected with the assistance of the advisory committee composed of: J. A. Rees, European Coordinator, England; M. Goldman, French Coordinator, France; A. H. Guenther, USA; M. Kristiansen, USA; and A. V. Phelps, USA. The most memorable aspect of the Institute was the sustained high interest of the faculty and participants for the two week period. The daily schedule was demanding: five hours of lectures, two hours of seminars and one of discussion. These sessions were often extended because of presentation by the participants of im­ proptu seminars. The discussions were intense. Majestic }10nt Blanc provided the backdrop for the lecture hall, and these surroundings and the weather contributed to the overall positive mood. It was a wonderful occasion. The lectures and seminars have been collected into two volumes.

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Basic Discharge Processes.- The Development of Theories of the Electrical Breakdown of Gases.- Basic Processes of Electrical Discharges.- Transport Data for the Modeling of Electrical Breakdown and Discharges.- Electronegative Gases.- Kinetic Theory.- Kinetic Theory of Ion Transport in Gases.- On the Divergence of the Legendre Expansion of the Electron Velocity Distribution.- Breakdown in Uniform Fields.- Prebreakdown Ionization in Gases Under Steady-State and Pulsed Conditions in Uniform Fields.- Nanosecond Pulse Breakdown of Gas Insulated Gaps.- Breakdown in Nonuniform Fields.- Physical Models of Long Air Gap Breakdown Processes.- Spark-Over Characteristics of Long Gaps.- Seminars.- A Numerical Solution of the Boltzmann Equation.- The Microscopic Treatment of Nonequilibrium Regions in a Weakly Ionized Gas.- Current Research Topics in Low-Pressure Glow Discharges in Rare Gases and in Pure Nitrogen.- Contributions to Continuous Leader Channel Development.- Participants.