TABLE OF CONTENTS
Publications and Reports
v
Personnel
vi
Introduction
I.
Physical Electronics
A. Electron-Emission Problems
1. Work Functions and Electrical Conductivity of OxideCoated Cathodes
2. Determination of the Thermionic-Emission Properties
of Single Tungsten Crystals by a Photometric Method
Determination of the Field-Emission Properties of
3.
Single Tungsten Crystals by a Photometric Method
4.
Thermionic Emission from Ultrafine-Grain Oxide-
ix
1
1
Coated Filaments
III.
IV.
V.
3
3
4
Investigation of Certain Properties of OxideCoated Cathodes Using Radioactive-Tracer Techniques
6.
Deterioration of Oxide-Coated Cathodes under Low
Duty-Factor Operation
7. Activated Diodes
8. Studies of Photoelectric Emission
B. Studies with Gaseous Discharge
1. Investigation of Low-Pressure Mercury Arcs
C. Experimental Techniques
Spectral Emissivity of Tantalum
1.
Ionization Gauge and High-Vacuum Studies
2.
Microwave Gaseous Discharges
A. Pulsed Breakdown
B. 100-Megacycle Cavity
C. Positive Ion Analysis
D. Dielectric Coefficient of Plasmas
Solid State Physics
A. Theory of Superconductivity
B. Soft X-Ray Vacuum Spectrograph
Low-Temperature Physics
A. Helium Liquefiers
B. Second Sound Velocity
C. X-Ray Study of Superconductors
D. Investigation of Dipole Interaction Theory in Crystals
Radio-Frequency Spectroscopy
A. Molecular-Beam Research
1. The Fourth Atomic-Beam Apparatus
B. Nuclear Magnetic Resonance
10
10
10
10
10
11
12
12
15
15
16
17
17
17
19
19
19
21
21
23
23
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24
2.
The Magnetic Moment of B11
3. The Magnetic Moment of La1 3 9
4.
Deuteron-Proton Moment Ratio
5. Faraday Effect
6.
New Magnet
C. Microwave Spectroscopy
1. Ketene
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24
25
25
26
26
26
5.
II.
1
1. The Magnetic Moment of Rb8 7
4
6
24
Formaldehyde
26
3. Oxygen
4. Tellurium
5. Methyl Stannane
27
28
29
6.
29
2.
Apparatus
iii
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~~ _
VI.
VII.
___ __IL__LI~--~YII1~11~^
The Linear-Accelerator Program
Magnetron Development
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A.
33
33
33
35
35
35
35
35
35
36
36
B.
C.
High-Power 10.7-Cm Magnetron
1. Testing and Design
2. Thoria Cathodes
3. Auxiliary Equipment
a.
Filament Transformer
b.
Electro-Magnet
c.
Vacuum Furnace
Magnetron Research
1. Mode Stability
2. Noise Properties of the Pre-Oscillating Magnetron
Cathode Research
VIII. Traveling-Wave Tubes
A.
B.
C0.
D.
IX.
Three-Cm Medium-Voltage Traveling-Wave Tubes
Velocity-Modulated-Input Traveling-Wave Tube
Theory
Low-Voltage 3-Cm Traveling-Wave Amplifier
1.
Helix Assembly
2.
Gun Design
E.
Dense Electron Beams in Axial Magnetic Fields
F. Microwave Noise Studies
1.
Microwave Noise Source
2.
Receiver
G. Analysis of Traveling-Wave Tubes
Communications Research
A.
B.
C.
Multipath Transmission
1.
Speech and Music
a.
Theory
b. Receiver Design
2. Television
Microwave Modulation Techniques
1. Investigation of Frequency Modulation of a Reflex
Klystron
Statistical Theory of Communication
1. Auto-Correlation Functions
a.
2.
Correlation Functions
b. Digital Electronic Correlator
Amplitude and Conditional Probability Distributions
of a Quantized Time Function
3.
4.
5.
6.
D.
E.
F.
X.
Techniques of Optimum Filter Design
Storage of Pulse-Coded Information
"Felix" (Sensory Replacement)
Clipped Speech Studies
a. A Short-Time Correlator for Speech Waves
7.
Pulse-Code Magnetic Recorder
Transient Problems
1.
Transient Theories
Active Networks
1.
General Theory
Locking Phenomena in Microwave Oscillators
Miscellaneous Problems
A.
B.
C.
Electronic Differential Analyzer
Mathematical Analysis of a Series-Shunt Peaking Circuit
An Automatic Impedance-Function Analyzer
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38
38
38
39
40
40
40
42
44
44
44
45
47
47
47
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47
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49
49
50
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52
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56
60
60
60
61
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63
64
64
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