TABLE OF CONTENTS
vi
Personnel
xiv
Publications and Reports
xviii
Introduction
GENERAL PHYSICS
I.
II.
III.
IV.
1
Molecular Beams
Scattering of Low-Temperature Helium Beams
1
Field Distribution Measurements by the Atomic-Beam
Method
4
Construction of a Scanning Molecular Microscope
9
13
Radio Astronomy
Polarization Measurements on the Cloud 2 OH Source
13
Very Long Baseline Interferometry
15
Pulsar Facility
17
Pulsar Observations with a Swept-Frequency Local
Oscillator
17
21
Solid-State Microwave Electronics
Varactor Frequency Doubler Imbedding Network Analysis
and Design
21
Electronic Instrumentation
21
23
Electrodynamics of Media
Low-Power Frequency Mixing Experiments
Metal- Metal Point- Contact Diodes
Using
23
V
Quantum Theory of
Crystal
Cerenkov
Radiation in a Uniaxial
25
PLASMA DYNAMICS
V.
Plasmas and Controlled Nuclear Fusion
35
Waves and Radiation
Recent Developments
Waves
in the Study of Ion Acoustic
35
Longitudinal Profiles in Argon Plasmas in Plasma
Facility 1 (PF1)
Plasma Diagnostics
High-Pressure Pulsed CO
2
Laser
Optical Satellites Induced in a Plasma through the Action
of Intense, High-Frequency Electric Fields
High-Temperature Toroidal Plasmas
QPR No. 98
35
41
47
47
53
57
Anomalous Resistivity and Tokamak Regimes
57
Two-Dimensional Analysis of Tokamak Fusion Reactors
67
iii
CONTENTS
VI.
Gaseous Electronics
71
Time-Dependent Threshold Characteristics of Pulsed
Noble Ion Lasers
71
Microwave Diagnostics of High-Density Laser Plasmas
73
COMMUNICATION SCIENCES AND ENGINEERING
VII.
Processing and Transmission of Information
Channel Measurement Receivers
Nondispersive Media
81
for Slowly Fading
81
Variable-Rate Optical Communication through
Turbulent Atmosphere
the
88
Poisson Process as a Statistical Model for Photodetectors
Excited by Gaussian Light
VIII.
Detection and Estimation Theory
103
Likelihood Ratios and Mutual Information for Poisson
Processes with Stochastic Intensity Functions
IX.
X.
Speech Communication
103
113
Children's Perception and Identification of Stress
Constants
113
Automatic Analysis-by-Synthesis of Vowels
120
An Interactive Computer Graphics and Audio System Sans
Large Budgets and Great Fuss
126
DYNAMO Graphic System
134
Linguistics
Some Observations on Language Acquisition:
Development of Words
XI.
95
139
The
139
Tests for Echoic Storage Effects
141
Comprehension of Passive with Reduced Syntactic Cues
143
Effect of Verbs in a Difficult Completion Task
145
Cognitive Information Processing
149
Analyzing the Performance of an Image-Processing System
149
Approximation of a Matrix by a Sum of Products
157
Focused Ultrasonic Transducer Design
169
Tactile Pitch Feedback for the Profoundly Deaf
177
Operator Interactive Computer Programs for Analyzing
Biological Tissue Sections
179
Character Recognition: Performance of Human Computers
185
QPR No. 98
CONTENTS
XII.
XIII.
Communications Biophysics
Aural Tracking of Musical Notes: The Problem of the
Missing Fundamental
195
Arterial Pulse Wave Velocity as an Indicant of Diastolic
Pressure
203
Use of Hardware Character Generator with Small Computers
206
Neurophysiology
New Mechanical Devices
XIV.
195
215
215
Kinematic Thrust Bearing
215
Precision Angular Tilt Table
216
Signal Processing
219
Power Processing by Two-State Modulation
219
Waveform Envelope Detection
222
Author Index
QPR No. 98
227