TABLE OF CONTENTS vii Personnel Publications and Reports xv Introduction xx GENERAL PHYSICS I. 1 Molecular Beams Helium Evaporation at Low Temperatures 2 Diffusion of Helium Three in Superfluid Background 11 Proposed Molecular Microscope 13 II. Molecular Collisions 17 III. Molecular Energy Transfer and Spectroscopy 19 IV. Microwave Spectroscopy 21 V. Atomic Resonance and Scattering 23 VI. VII. VIII. Spin-Exchange Scattering 23 Magnetic Moment of the Proton 31 Superconducting Particle Counter 35 Electron Magnetic Resonance 43 Excited States 43 Radio Astronomy 61 Pulsar Facility 62 Millimeter-Wave Absorption by Atmospheric Oxygen 62 69 Solid-State Microwave Electronics Status of Research 69 Frequency Doubler 15. 2-30. 4 GHz 69 L-band Quadrupler 72 Tasks in Progress 74 Avalanche-Transit-Time Oscillator Analysis 74 60-GHz Mixer 76 Mixer Analysis 76 77 New Tasks Intermodulation Distortion in Mixers 77 High-Power 60-GHz Solid-State Source 77 Nonlinear Circuit Theory 78 Undergraduate Projects QPR No. 92 79 iii CONTENTS IX. Electronic Instrumentation 81 Optimal Single and Dual Detector Arrays for the Mattauch-Herzog Mass Spectrometer X. Optical and Infrared Spectroscopy Optical Phonons and Symmetry of Tysonite Lanthanide Fluorides 81 91 92 Far Infrared Electronic Transitions in Tysonite Lanthanide Fluorides 110 Optical Phonons in Lead Titanate 116 Lattice Vibrations and Structure of Ammonium Halides 126 XI. Ultrasonic Properties of Solids 143 XII. Geophysical Research 147 Spectrum of Coherent Light Scattered from a Turbulent Jet 148 High-Pressure Experiments with a Magnetic Pinch 151 XIII. Gravitation Research 161 XIV. Magnetic Resonance 163 XV. Physical Electronics and Surface Physics 165 XVI. Quasi-thermodynamic Analysis of the Reaction of a Gas with a Solid to Form Volatile Products: Flash Desorption Study of the Oxidation of Tungsten 167 Contact-Potential Measurements of the Adsorption of I Br 2 , and C12 on a (100) Tungsten Crystal 2 176 Molecular-Beam Study of the Scattering of Neon Atoms from the (110) Face of Tungsten: The Effect of Adsorbed 0 2 and CO 185 Physical Acoustics 193 Light Scattering from a Liquid-Liquid Interface 193 Measurements of Dispersion Relation for Surface Waves on Pure Liquids 197 Absorption Characteristics of a Nonlinear Oscillator 199 Crystal Structure of LaF 199 3 Light Scattering from Surface Waves on Carbon Dioxide XVII. Electrodynamics of Media 200 201 Step Response of Inhomogeneously Broadened Laser Medium 201 Theory of Excitation of Electromagnetic Modes in Hollow Circular Dielectric Waveguides 203 Maxwell's Equations for Discrete Space 211 Relativistic Treatment of Multipolar Media 219 QPR No. 92 CONTENTS PLASMA DYNAMICS XVIII. Plasmas and Controlled Nuclear Fusion 227 Waves and Radiation Construction and Properties of a Collisionless, Quiescent Plasma Facility (PF 1) 227 Exact Nonlinear Collisionless Plasma Waves II 236 Striations in a Low-Pressure Discharge 243 Diffusion and Turbulence 251 Single Rotational Mode CO 2 Laser Optical Measurements on the Plasma Facility II (PF 2) Argon Plasma 255 Langmuir Probe Measurements on a Helium Plasma in Plasma Facility II (PF 2) 258 265 Fusion-Related Studies Stability of Relativistic Electron Rings Gaseous Electronics Particle Loss in a Turbulent, Discharge XX. 253 255 Plasma Diagnostics XIX. 227 266 273 Weakly Ionized, Argon Applied Plasma Research Active Plasma Systems Ion-Cyclotron Resonance in a Nonuniform Magnetic Field Plasma Effects in Solids 273 285 285 287 292 Microwave Instabilities in a Semiconductor Subjected to DC Electric and Magnetic Fields 292 Microwave Radiation from BiSb Alloys 300 Plasma Physics and Engineering 308 COMMUNICATION SCIENCES AND ENGINEERING XXI. Statistical Communication Theory 311 XXII. Processing and Transmission of Information 313 Improved Optical Communication through Atmospheric Turbulence Using State Knowledge XXIII. Detection and Estimation Theory Barankin Bounds on the Variance of Estimates of the Parameters of a Gaussian Random Process QPR No. 92 315 323 324 CONTENTS XXIV. Speech Communication 335 Visual Perception of Speech Stimuli 335 English as a Tone Language: Stress 351 The Acoustics of Primary Perceptual Integration of Dichotic Click Trains XXV. Linguistics 363 On Instrumental Adverbs and the Concept of Deep Structure XXVI. XXVII. XXVIII. Cognitive Information Processing Derivation of Pulse-Invariant Difference Equations 385 391 Measurement of Velocities in the Middle Ear Using the M6ssbauer Effect 402 Microelectrode and Stimulation Studies of Spontaneous Signals from Brain Tissue Cultures 405 Neurophysiology 429 Influences on Axonal Conduction 431 Discharge Characteristics of Frog's "OFF" Fibers 436 Action of Tetrodotoxin on Frog's Muscle Spindle 438 Tegmental Auditory Fibers of Rana pipiens 440 Apparatus for the Accurate Determination of Flange Focal Distance 441 4 2 K+ Efflux from Limulus Ventral Eye Stroboscopic Light Research QPR No. 92 377 381 Communications Biophysics Author Index 365 Voluntary Attention Switching between Foresight and Hindsight An Effect of Light on XXIX. 359 446 451 453