TABLE OF CONTENTS
Personnel
vi
Publications and Reports
ix
Introduction
xi
I.
1
Physical Electronics
1
Electron Emission Problems
Energy Dependence of Electron-Produced Poisoning of Oxide
Cathodes
1
Emission as a Function of Activation of an Impregnated Oxide
Cathode
1
1
Theory of Gas Discharges
Ambipolar Diffusion and Ionization in a Plasma
2
Experimental Studies
II.
Clean-Up and Diffusion of Helium in Ionization Gauges
2
Vacuum Studies
4
5
Microwave Gaseous Discharges
High-Density Microwave Gaseous Discharges
5
Probe Studies
9
Microwave Breakdown in Hydrogen at High Pressures
III.
IV.
V.
VI.
12
15
Solid State Physics
On the Theory of Superconductivity
15
Microwave Study of Silicon Carbide
16
17
Low Temperature Physics
The Viscosity of Liquid Helium
17
Measurement of Second-Sound Pulse Amplitudes in Liquid Helium II
19
20
Microwave Spectroscopy
Microwave Spectrum of Oxygen
20
Spectrum of OCS
21
Effect of Hindered Internal Rotation on Over-All Rotations of
Symmetric Rotors: Methyl Silane
24
HDO and D20 Rotation Lines
24
Magnet Laboratory Research
Magneto-Optic Studies of Hg
VII.
1
26
196
and Hg
197
26
Nuclear Magnetic Resonance in Gases
27
The Self-Reversal of Na Resonance Radiation
27
The Zeeman Effect of Mercury (X = 4047A)
28
Nuclear Resonance Studies of Solids and Liquids
29
Microwave Tube Research
30
A One-Dimensional Electron Beam as a Four-Terminal Network
30
A Generalized Theory of Noise in Electron Beams
32
Noise in Electron Beams
35
VIII.
IX.
X.
XI.
XII.
Low-Noise Gun Design
37
Internally Coated Cathodes
38
Multipath Transmission
Transatlantic FM Study
41
Narrow-Band Limiting
41
Information Theory
44
Controllable Filter
44
Five-Channel Vocoder
46
Error Free Coding
47
Statistical Communication Theory
XV.
XVI.
51
Introduction
51
Second-Order Correlation
51
Effects of Periodic Sampling on Output Signal-to-Noise Ratio
in Autocorrelation Detection
51
Transistor Circuits
54
Direct-Coupled Amplifiers
54
Transistor Sawtooth Generator
55
Microwave Components
57
57
Variational Principles for Resonant Frequencies of Cavities
57
Variational Principle for the Propagation Constant y
58
Mode-Expansion Solution of Anisotropic-Inhomogeneous Waveguide Problems
60
Integral Equation Method of Solving Anisotropic-Inhomogeneous
Waveguide Problems
62
Strip Transmission System
XIV.
44
A Signal Analyzer
Ferrites at Microwave Frequencies
XIII.
41
Visual Replacement Projects
63
65
Sound-Pulse Projector with Automatic Scanning
65
Presentation of Tactile Information
67
Speech Analysis
68
Investigation of Stop Consonants
68
Segmentation
70
Mechanical Translation
73
A New Publication
73
Language as an Error Correcting Code
73
Communications Biophysics
75
Electrical Responses to Clicks and Tone Pips as Recorded from the
Auditory Cortex
75
Analog Correlator for Electroencephalography
77
Auditory Sensitization (Electrophysiological Results)
78
An Electronic Device for the Measurement of the Latency
of "Neurals"
79
XVII.
XVIII.
XIX.
Analog Computer Research
81
Applications of Signal-Flow Graphs to Analog Computers
81
Time-Domain Synthesis by Delay-Line Techniques
84
Driving-Point Impedance of RC Networks Terminated in an
Inductance
84
Network Synthesis
88
Generation of General Positive Real Functions
88
Synthesis without Ideal Transformers
90
Voltage Transfer Synthesis
93
Shop Notes
96
Improvements on a Punched Card Selector Frame
96
Vacuum-Tight Gland for Push-Rod and Rotating Shaft Applications
98
Vacuum Cold Trap
99
Electric Vacuum Seal
100