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CONTENTS
ABSTRACT
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2.)
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CHAPTER1 OBJECTIVE
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BACKGROUND .
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CHAPTER 2
2.1
2.2
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Principle of Operation
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Problems in Densitometer Design
2.2.1 Greenhouse Model .
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2.2.2 Buster Model
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2.2.3 Tumbler Model
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CHAPTER 3
3.1
3.2
3.3
3.4
3.5
3.6
3.7
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INSTRUMENTATION .
General.
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BetaSources.
Detector .
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Recording Unit
Control System
Calibration
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Instrument Stations
CHAPTER 4 RESULTS .
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CHAPTER 5
ANALYSIS OF RESULTS
CHAPTER 6
CONCLUSIONS AND RECOMMENDATIONS
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ILLUSTRATIONS
CHAPTER 2
2.1
2.2
2.3
Beta-densitometer Components
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Recording Unit .
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Densitometer Station, OperationIvy .
CHAPTER 3
$3.1
BACKGROUND
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INSTRUMENTATION
Beta-source Holder .
$3.2 Detector Circuit
$3.3
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Detector Assembly
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14
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RESTRICTED DATA —QURREIP- SECURITY INFORMATION
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