Front Cover; Advances in Imaging and Electron Physics, Volume 103; Copyright Page; Contents; Contributors; Preface; Chapter 1. Space-Time Representation of Ultra Wideband Signals; I. Introduction and Outline; II. Time-Harmonic Radiation from an Aperture; III. Time-Domain Representation of Radiation from an Aperture; IV. Illustrative Example; V. Wavepackets and Pulsed Beams in a Unifom Medium; VI. Phase-Space Pulsed Beam Analysis for Time-Dependent Radiation from Extended Apertures; Appendix: Asymptotic Evaluation of the Beam Field in (125); References; Chapter 2. The Structure of Relief

I. IntroductionII. The Differential Structure of Images; III. Global Description of the Relief; IV. Contours: Envelopes of the Level Curves; V. Discrete Representation; VI. Conclusion; References; Chapter 3. Dyadic Green's Function Microstrip Circulator Theory for Inhomogeneous Ferrite With and Without Penetrable Walls; I. Overall Introduction; II. Implicit 3D Dyadic Green's Function with Vertically Layered External Material Using Mode-Matching; III. Implicit 3D Dyadic Green's Function with Simple External Material Using Mode-Matching; IV. 2D Dyadic Green's Function for Penetrable Walls

V. 3D Dyadic Green's Function for Penetrable WallsVI. Limiting Dyadic Green's Function Forms for Homogeneous Ferrite; VII. Symmetry Considerations for Hard Magnetic Wall Circulators; VIII. Overall Conclusion; References; Chapter 4. Charged Particle Optics of Systems with Narrow Gaps: A Perturbation Theory Approach; I. Introduction; II. Applicability of Perturbation Methods in Charged Particle Optics; III. Calculation of Weakly Distorted Sector Fields and Their Properties with the Aidofa Direct Substitution Method

IV. Transformation of Charged Particle Trajectories in the Narrow Transition Regions Between Electron- and Ion-Optical ElementsV. Synthesis of Required Field Characteristics in Sector Energy Analyzers and Wien Filters with the Aid of Terminating Electrodes; VI. Calculation of the Elements of Spectrometers for Simultaneous Angular and Energy or Mass Analysis of Charged Particles; VII. Conclusion; Acknowledgments; References; Index