TABLE OF CONTENTS
v
Publications and Reports
Personnel
vii
Introduction
I.
Physical Electronics
A.
B.
C.
II.
E.
V.
100-Megacycle Breakdown
Measurement of the Properties of Low-Density Microwave
Gas Discharges
1
2
3
7
8
9
10
11
11
12
12
13
17
19
22
The Theory of Superconductivity
Soft X-Ray Vacuum Spectrograph
Paramagnetic Resonance Experiments
The Influence of a Magnetic Field on the Conductivity
of Thin Metallic Films
The Theory of the Transport Phenomena in Metals
Low-Temperature Physics
A.
B.
C.
D.
E.
1
17
Solid State Physics
A.
B.
C.
D.
IV.
1
Electron-Emission Problems
1. Thermionic Work Function and Conductivity of OxideCoated Cathodes
2. Thermionic Emission from Ultrafine-Grain OxideCoated Filaments
3. Deterioration of Oxide-Coated Cathodes under Low
Duty-Factor Operation
4. Purified Standard Diodes
5. Determination of the Field-Emission Properties of
Single Tungsten Crystals by a Photometric Method
6. Photoelectric Emission
7. Effect of Impurity Surface States on the Photoelectric Threshold in Semiconductors
Studies with Gaseous Discharge
1. Investigation of Low-Pressure Mercury Arcs
Experimental Techniques
1. Spectral Emissivity of Tungsten
2. The Voltage Comparator Tube
Microwave Gaseous Discharges
A.
B.
III.
ix
Helium Liquefiers
Second Sound Velocity
X-Ray Study of Superconductors
Investigation of Dipole Interaction Theory in Crystals
Cooling Liquid Helium by Adiabatic Demagnetization
22
22
23
23
24
26
26
26
28
28
28
Radio-Frequency Spectroscopy
30
A.
30
30
31
B.
C.
Molecular-Beam Research
1. The Fourth Atomic-Beam Apparatus
Nuclear Magnetic Resonance
1. Factors Influencing the Positions of Nuclear Magnetic Resonances
2. Deuteron-Proton Moment Ratio
Microwave Spectroscopy
1. Formaldehyde
2.
Oxygen
3. Tellurium
4.
Sulphur
5. Methyl Stannane 10
6. Nuclear Spin of B
7. Apparatus
iii
31
35
35
35
3;
3
38
38
39
41
VI.
The Linear-Accelerator Program
VII.
Tube Research and Development
42
42
A.
Magnetron Development
1. High-Power 10.7-Cm Magnetron
a. Testing and design
b. Thoria cathodes
c. Auxiliary equipment
2. Magnetron Research
a. Mode interaction in magnetrons
b. Noise properties of the pre-oscillating
42
42
42
43
43
43
B.
magnetron
3. Cathode Research
Traveling-Wave Tubes
44
45
47
Theoretical Noise Figure of Traveling-Wave Tubes
a. Experimental work
2. Microwave Noise Studies
3. Dense Electron Beams in Axial Magnetic Fields
C. The Generation of Millimeter and Infra-Red Radiation
by Accelerated Electrons
VIII. Communications Research
A. Multipath Transmission
1. Speech and Music
a. Theory
b. Limiter design
c. Three-path multipath interference
2. Television
B. Statistical Theory of Communication
1. Digital Electronic Correlator
2. Detection of Small Signals in Noise
3. Crosscorrelation Demonstrator
4. Experimental Determination of System Functions
by the Method of Correlation
5. Optimum Linear System Design Criteria
6. Application of Wiener's Techniques in Transient
Synthesis
7. Techniques of Optimum Filter Design
Amplitude and Conditional Probability Distributions of a Quantized Time Function
9. Storage of Pulse-Coded Information
10. Felix (Sensory Replacement)
11, Response of Nerve to Random Stimuli
12. Speech Studies
a. A short-time correlator for speech waves
b. Speech synthesizer
1.
The effect of syllabic rate on speech
intelligibility
Pulse Coding of Picture Signals
Pulse-Code Magnetic Recorder
Twin-Track Recorder for Slow Phenomena
47
49
49
49
52
53
53
53
53
54
56
56
58
58
58
58
60
61
62
64
66
67
67
67
68
68
70
c.
13.
14.
15.
C.
Transient Problems
75
D.
1. Transient Theories
Active Networks
1. Broadband Amplifiers
5
;5
85
2. The Synthesis of Servomechanisms
Locking Phenomena in Microwave Oscillators
86
88
E.
IX.
70
72
73
75
1.
Theory
2.
Experimental Work
Miscellaneous Problems
A.
B.
Electronic Differential Analyzer
Analog Devices for Network Problems
1. An Automatic Impedance-Function Analyzer
2. The Electronic Isograph
a. Theory
b. Design
88
89
90
90
91
91
93
93
93