TABLE OF CONTENTS Personnel vi Publications and Reports xv Introduction xx GENERAL PHYSICS I. Molecular Beams Cesium Beam Atomic Clock II. Microwave Spectroscopy Velocity Surfaces in Lithium Niobate III. IV. VIII. 5 Radicals in the Gas Phase 13 Construction of a Rapid-Scanning EPR Spectrometer Coupled with a Flash-Discharge Source 14 Radio Astronomy Microwave Dielectric Constant and Emissivity of a Solution Approximating Sea Water VII. 5 13 Results Obtained from the Inversion, of Simulated Atmospheric Water-Vapor Spectra VI. 1 Electron Magnetic Resonance Interpretation of Spectral Data V. 1 15 15 16 19 Hydrogen Recombination Line Observations 22 Observations of OH Emission 23 Solid-State Microwave Electronics 27 High Dynamic Range Techniques 27 High-Power Varactor Multipliers 27 Device Characterization 28 Computer Design of Varactor Circuits 28 Electronic Instrumentation 33 Shielded Room Facility 33 Mass Spectrometer Detector 34 Resolution of Mass Spectrometer 36 Sampling and Retrieval of the Spectrum 37 Optical and Infrared Spectroscopy 39 Reflection Measurements on Potassium Halides in the Far Infrared Region 39 Lattice Vibrations in CdS/Se Mixed Crystals 42 Geophysical Research Optical Radar and Airglow Observations in Norway during the Presence of Noctilucent Clouds QPR No. 85 49 49 CONTENTS IX. X. Electrodynamics of Media 51 Electrodynamics of Quadrupolar Media 51 Pulse Distortion in Nonlinear Optics 56 Physical Optics of Invertebrate Eyes Optics of the Tobacco Hornworm Moth 69 69 PLASMA DYNAMICS XI. Plasma Physics 71 Computer Programmed "Basic Data of Plasma Physics" 71 Far Infrared Plasma Diagnostics 73 Electron Density Measurements with a Narrow-Band Far Infrared Interferometer 87 Microwave Scattering from Warm Plasma Waves near the Electron-Cyclotron Frequency 98 Nonlinear Harmonic Generation at Plasma Resonance 103 Laser Breakdown Experiment 108 Microwave Emission from n-type Indium Antimonide at 4.2°K and 77*K 128 XII. Gaseous Electronics 135 Electron Collisional Effects on Wave Propagation in a Nonmagnetized Plasma XIII. Plasmas and Controlled Nuclear Fusion Active Plasma Systems System C: Excitation of an Ion-Cyclotron Resonance 141 Beam-Plasma Discharge: 146 System D Cross-Field Beam- Plasma Experiments Experimental Investigation of a Beam-Plasma Interaction in a Minimum-B Field 150 Anomalous Millimeter Microwave Plasma Density Measurements 157 Theory of Beam- Plasma Interactions 163 Dispersion Relations for Beam-Plasma Interactions 168 Sheet Models of the Beam-Plasma Discharge 178 Effect of Essential Singularities on Stability Criteria 183 Motion of Charged Particles in Magnetic Mirror Field in the Presence of a Radial Time-Variant Electric Field 186 Experimental Study of Hollow-Cathode Discharge Arc Plasma Plasma Magnetohydrodynamic Flows, Waves, and Instabilities Magnetohydrodynamic Wave Propagation Transverse to Magnatic Field Energy Conversion Research 154 193 193 201 201 217 Status of Research QPR No. 85 141 141 Applied Plasma Physics Related to Controlled Nuclear Fusion XIV. 135 217 iv CONTENTS XV. XVI. Spontaneous Radiofrequency Emission from Hot-Electron Plasmas 219 Enhanced Cyclotron Radiation from an Electron-Cyclotron Resonance Discharge 219 Interaction of Laser Radiation with Plasmas and Nonadiabatic Motion of Particles in Magnetic Fields 223 Incoherent Scattering of Light from a Plasma IV 223 Electron Diffusion in a Helically Perturbed Magnetic Field of the M. I. T. Stellarator 225 COMMUNICATION SCIENCES AND ENGINEERING XVII. XVIII. XIX. XX. XXI. 231 Statistical Communication Theory Discrete Analysis of Homomorphic Deconvolution 231 Unity Feedback Two-State Modular Configurations 234 Processing and Transmission of Information 239 Shift-Register Synthesis and Applications 239 Coding Theorems for Source-Channel Pairs 241 249 Detection and Estimation Theory Nonlinear Map Interval Estimation 249 Performance Bounds for Optimum Detection for Gaussian Signals 253 267 Speech Communication On the Mechanism of Glottal Vibration for Vowels and Consonants 267 Homomorphic Speech Processing 271 279 Linguistics On Noncyclic Transformational Grammars 279 Lithuanian Morphophonemics 284 Inward and Upward - Directionals in English On Problems Implied by the Concept 'Performance' XXII. XXIII. XXIV. 297 301 305 Cognitive Information Processing Acquired Asymmetry of Shape Learning 305 Transmission and Coding of Color Pictures 307 Subjective Effects of Additive White Pictorial Noise with Various Probability Distributions 317 Stochastic Model for Weather Maps 320 312 Neurophysiology Contrast Detectors 312 Insight into Neuronal Closed Loops from Shift-Register Theory 325 329 Computation Research Finding the Roots of an Analytic Function Author Index QPR No. 85 329 331 v