In recent years, Rydberg atoms have been the subject of intense study, becoming the testing ground for several quantum mechanical problems. This book provides a comprehensive description of the physics of Rydberg atoms, highlighting their remarkable properties by reference to their behaviour in a wide range of physical situations. Following an overview of the basic properties of Rydberg atoms, their interactions with electric and magnetic fields are analysed in detail. The collisions of Rydberg atoms with neutral and charged species are described, and the use of multichannel quantum defect theory in the study of Rydberg atomic systems is discussed. Experimental and theoretical research in this extensive field is also reviewed, making the book valuable to both graduate students and established researchers in physics and physical chemistry.

"Provides a comprehensive description of the physics of Rydberg atoms, highlighting their remarkable properties by reference to their behavior in a wide range of physical situations." Optical Engineering

"...handsomely produced with many illustrations...the book will undoubtedly be the standard reference work in the field for many years to come...should be invaluable both to experienced researchers and to graduate students...it constitutes a valuable resource for teachers of quantum mechanics and atomic physics..." Daniel Kleppner, Nature

"...will be useful to those wanting to access in one place Gallagher's way of understanding and explaining a rich variety of phenomena...libraries should definitely make the investment." Peter M. Koch, Physics World

"...This timely and beautifully produced book provides the background needed to delve into the recent literature in the area...it also constitutes a rich source of experimentally realizable and elegant illustrations of basic physical principles." Turgay Uzer, Physics Today

"Gallagher has made one more fine contribution to the field of atomic physics." James E. Bayfield, American Journal of Physics