TABLE OF CONTENTS
vi
Personnel
Publications and Reports
x
Introduction
I.
Physical Electronics
Electron-Emission Problems
Magnetic Velocity Analyzer Investigation of
Thermionic Emission from Tungsten
The Distribution of Energies of Photoelectrons
Emitted from Germanium Deposited on a
Molybdenum Substratum
Photoelectric Study of Surface States on Insulators
The Influence of Electric Field and Temperature
on Field Emission from Tungsten
II.
III.
IV.
1
1
1
2
2
3
Studies with Gas Discharge
Probe Measurements in a Low-Pressure
Mercury Arc
3
Experimental Techniques
5
3
Ionization Gauge Studies
5
Magnetron Ionization Gauge
Design and Construction of Circuits for the
Operation of Bayard-Alpert Gauges
6
9
Microwave Gaseous Discharges
The Steady State Discharge in Hydrogen
10
Oscillations in a D-C Mercury Arc
Positive Ion Analysis
11
13
Pure Helium Breakdown
13
10
Solid State Physics
Theory of Superconductivity
Soft X-Ray Vacuum Spectrograph
Paramagnetic Resonance Experiments
15
Low-Temperature Physics
20
Magnetic Dipole Interactions in Crystals
Resistance Minimum Measurements
Thermomechanical Effect in Liquid Helium II
15
16
16
20
20
20
Temperature and Pressure Dependence of
the Viscosity of Liquid Helium
21
Specific Heat of Liquid Helium
22
Measurement of Second-Sound Pulse Heights
in Liquid Helium II
The Electrical Resistance of Cold-Worked Copper
23
Phosphor Bronze Resistance Thermometer
23
23
Thermal Conductivity and Specific Heat of
Solids Measured by Pulse Technique
23
Helium Liquefiers
24
V.
Microwave Spectroscopy
25
VI.
Molecular Beam Research
27
VII.
Magnet Laboratory Research
28
Nuclear Magnetic Resonances
28
The Sign of Nuclear Magnetic Moments
28
Double Resonance Experiments
Effects in Mercury
Magnetic Properties of Solids
VIII.
28
Field Stabilization
30
30
32
The Rare Earths
32
Adiabatic Demagnetization
32
Zeeman Effect in Atomic Hydrogen
32
Tube Research and Development
33
Magnetron Development
33
Testing and Design of High-Power
10. 7-Cm Magnetrons
Microwave Tubes
Noise and Space Charge Waves
IX.
33
35
35
Small signal theory for one-dimensional flow
35
Experimental study of noise on electron beams
35
Traveling-wave tube design
36
Operation of Pulsed Magnetrons into a High-Q Load
36
1-MEV Pulsed Electron Source
36
Tube
36
Modulator
37
Spiral Beam Reflex Oscillator
38
Cut-off Frequencies of Single and Multi-Filar
Helices
38
A New Gaussmeter
38
Communication Research
Multipath Transmission
41
41
Speech and Music
41
Television
41
F-M Receiver Design
41
Statistical Theory of Communication
42
Multichannel Analog Electronic Correlator
42
Pulse Code Magnetic Recorder
42
Speech Probability Distributions after Filtering
44
Visual Pattern Noise
X.
Human Communication Systems
46
46
Slightly Lossy Networks
47
Parallel-Chain Amplifier
47
Experimental Approximation and Network Alignment
48
New Methods of Network Synthesis
55
Transient Problems
56
Basic Existence Theorems
56
Network Synthesis for Prescribed Transient
Behavior
56
Analog Computer Research
The Operation of Present Computers
64
64
The Macnee Differential Analyzer
64
The Scott Impedance Function Analyzer
64
The Design of New Computing Elements
64
Integral Equation Computer
64
The Square-Law Multiplier
64
Function Generator
65
Analog-Digital Conversion Device
65
High-Speed Commutator
65
An Analog Computer for Solving Linear
Simultaneous Equations
65