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Originally published in 1975, this book has evolved from lecture notes for classes in physical optics, diffraction physics and electron microscopy given to advanced undergraduate and graduate students. It deals with electron diffraction and diffraction from disordered or imperfect crystals.

Atomic collisions offer opportunities to study atomic structure and reaction mechanisms in experiment and theory, especially for projectiles of high atomic number provided by modern accelerators. This book offers an introduction into the field and provides basic understanding of the atomic processes occurring when a projectile hits another atom.

Replaces the contrived application of the quantum master equation with a satisfactory treatment of quantum fluctuations. This work covers the fluctuations and stochastic methods for describing them. It is of interest to students and researchers in applied mathematics, physics and physical chemistry.

Offers an elementary and unified introduction to the non-perturbative results obtained in relativistic quantum field theory based on classical soliton and instanton solutions. This book also describes vacuum tunneling, u-vacua and the dilute-instanton-gas approximation.