TABLE OF CONTENTS
Personnel
vi
Publications and Reports
ix
Introduction
xi
I.
Physical Electronics
Electron-Emission Problems
1
Fine-Grain Oxide-Coated Filaments
1
Magnetic Velocity Analyzer Investigation of
Thermionic Work Functions of Single-Crystal
Tungsten Filaments
4
Determination of Field-Emission Properties of
Single Tungsten Crystals by a Photometric Method
5
Photoelectric Emission
7
Photoelectric Emission from Quartz
7
Investigation of Low-Pressure Mercury Arcs
Experimental Techniques
Spectral Emissivity in Tungsten
Ionization Gauge Studies
III.
IV.
1
Thermionic Work Function and Conductivity of
Oxide-Coated Cathodes
Studies with Gaseous Discharge
II.
1
Microwave Gaseous Discharges
8
8
9
9
9
10
Breakdown in Hydrogen at 100 Megacycles
10
The Steady-State Discharge in Hydrogen
11
Collision Cross Sections
14
Solid State Physics
16
Extension of the Energy Band Theory
16
Self-Consistent Calculations for Cr+ and Cu+
17
Energy Bands in Solids
18
Theory of Molecular Oxygen
19
Theory of Ferroelectricity
20
Quantum Theory of Antiferromagnetism
20
Soft X-Ray Vacuum Spectrograph
20
Paramagnetic Resonance Experiments
21
Low Temperature Physics
24
Helium Liquefiers
24
Pressure Variation of Second Sound Velocity
in Helium II
25
Magnetic Dipole Interactions in Crystals
25
Measurements of Resistance Minima by Induction
25
Thermomechanical Effect in Liquid Helium II
26
Temperature and Pressure Dependence of the
Viscosity of Liquid Helium
V.
VI.
VII.
Molecular Beam Research
28
Detection of Atomic Hydrogen
29
Microwave Spectroscopy
30
General Organic Molecules
30
Ammonia
30
Nuclear Magnetic Moment of S33
30
Magnet Laboratory Research
31
31
The New Barrel-Type Magnet
31
Deuteron-Proton Moment Ratio
31
Double Resonance Experiments
32
Effects in Mercury
32
Effects in the Alkalis
33
Magnetic Properties of Solids
The Rare Earths
Tube Research and Development
Magnetron Development
33
33
34
34
High-Power 10. 7-Cm Magnetron
34
Magnetron Research
35
Microwave Tubes
IX.
28
Third Atomic Beam Apparatus
Nuclear Magnetic Resonances
VIII.
26
36
Theory of Noise in Traveling Wave Tubes
36
3-Cm Traveling Wave Tube Construction
38
Dense Electron Beams in Axial Magnetic Fields
38
Communication Research
Multipath Transmission
39
39
Laboratory Model of Ionosphere
39
Noise-Reducing Circuit
40
High-Frequency Limiter
40
Statistical Theory of Communication
41
Analog Electronic Correlator
41
Radar Waveform Detection by Crosscorrelation
41
Noise in Nonlinear Devices
42
Techniques of Optimum Filter Design
44
Interference Filtering
44
Theory of Nonlinear Transducers
45
Application of Correlation Techniques to
Electro- Acoustic Measurements
45
A Short-Time Correlator for Speech Waves
45
An Electrical Analog of the Cochlea
48
The Effect of Syllabic Rate on Speech Intelligibility
50
A Studio for Speech Studies
50
Human Communication Systems
Theory of Cochlear Frequency Discrimination
Transient Problems
Network Synthesis in the Time Domain
Slightly Lossy Networks
Compensation for Incidental Dissipation in
Network Synthesis
X.
Air Navigation
54
54
60
60
66
66
70