TABLE OF CONTENTS
Personnel
Publications and Reports
Introduction
I. Physical Electronics
Electron Emission Problems
Redetermination of the Crystallographic Variation of Electron
Field Emission from Tungsten
Growth of Single Crystals of Tantalum
Energy Dependence of Electron-Produced Poisoning of
Oxide Cathodes
II.
III.
IV.
V.
Experimental Studies
Infrared Radiation Pyrometer
Cleanup and Diffusion of Helium in Ionization Gauges
Ionization-Gauge Control Circuit
Microwave Gaseous Discharges
High-Density Microwave Gaseous Discharges
Microwave Breakdown in Hydrogen at High Pressures
Plasma Oscillations
Hyperfine Structure in Positronium
Solid State Physics
Microwave Study of Semiconductors
Low Temperature Physics
Summary of Research Program
The Viscosity of Liquid Helium
Measurements of Second-Sound Pulse Amplitudes in Liquid
Helium II
Ultrasonic Propagation in Magnetically Cooled Helium
Thermoelectric Power of Magnesium
Measurement of the Thermodynamic Equation of State of
Paramagnetic Salts
Microwave Spectroscopy
Microwave Spectrum of Oxygen
Conduction Electron Resonance in Metals
Paramagnetic Resonance Study of Ammonium Chrome Alum
VI.
VII.
Magnet Laboratory Research
Magneto-Optic Studies of Hg
1 9 6 and Hg
1 9 7
Nuclear Magnetic Resonance in Gases
Stepwise Excitation of Mercury
Microwave Tube Research
Noise Reduction by Means of a Lossy Beam Transformer
3
5
6
8
8
2
3
11
12
12
15
15
17
17
20
21
22
25
1
2 vi ix xiii
1
1
30
30
32
32
33
33
26
28
28
28
29

VIII.
IX.
X.
XI.
XII.
XIII.
Noise-Reduction Systems
Examination of Assumptions Implied in Predicted Minimum
Noise Figure for Traveling-Wave Tubes
Noise in Electron Beams
Large-Signal Measurements
Coupling of Two Concentric Helices
Atomic Beam Research
Hyperfine Structure of Cesium Radioisotopes
Multipath Transmission
Narrow-Band Limiting
FM Transient Response of a Bandpass Filter
Information Theory
Error Proof Coding
Statistical Communication Theory
Second-Order Correlation
Effects of Periodic Sampling on Output Noise in Autocorrelation
Detection
Transistor Circuits
Voltage-Regulated Supply
Transistor Time Modulator
Semiconductor Noise
Problems in the Measurement of Noise Amplitude Probabilities
Noise and Channel Effect in P-N Junctions
Modulation Noise in Semiconductor Devices
Noise Analyzer
XIV.
XV.
XVI.
XVII.
Microwave Components
Ferrites at Microwave Frequencies
T -Ridge Waveguides
Speech Analysis
Investigation of Consonants
Mechanical Translation
Communications Biophysics
Probability Model for Cortical Responses to Successive
Auditory Clicks
Masking and Variability of Neural Responses to Clicks
Neural Latency Monitor
XVIII. Analog Computer Research
Analog Computer Development
Cathode Ray Tube Multiplier
Square-Law Multiplier
Probability Multiplier
High-Speed Analog Computer
68
71
71
74
75
65
65
68
68
64
64
64
55
60
60
62
83
83
84
84
84
75
80
81
83
35
47
50
50
51
37
40
44
51
51
54
54
55
55

XIX.
XX.
XXI.
Solution of Simultaneous Equations on an Analog
Computer
Inverse Trigonometric Function Generator
Diode Network Synthesis
The Saturable Reactor in Analog Computers
Applied Network Theory
Complex Frequency Plane Synthesizer
Nomogram for a Butterworth Filter with Internal Loss
Approximate Method for Frequency Time Domain
Transformation
Duality of Ideal Transformers
Network Synthesis
Synthesis of RC Networks in the Time Domain
Switching Control Systems
Neurophysiology
84
85
85
88
91
91
91
91
94
96
96
100
108