CONTENTS
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ABSTRACT - - ---- 77 oo or rere ore sees ewes ee ccoor sess sssssssss
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FOREWORD: ewer rer rr rrr crreerrr errs rrsr ese cers crrers tose ence
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PREFACE------- orc errr rene ccrccr crass esc
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CHAPTER 1
INTRODUCTION ---------0---r remem nen n nen n nen e nen nnn 1
1.1 Objectives------- ort rrr rer terete cer rent nn cnn een nne 11
1.2 Background and Theory ------- wert tte rece err ert cen ec enne 11
1.2.1 Formation and Nature of Fallout Particles ---------------------- 12
1.2.2 Cloud Development- - ------------------ 22-27 rr rere eee enn 14
1.2.3 Transport and Distribution ---------------------+-------+--- 14
1.2.4 Procedures for the Determination of Fallout Partition -------------- 15
1.2.5 Prior Estimates of Local Fallout ------+------------+----+------ 16
1.2.6 Worldwide Fallout ------------------+----------+--------- 18
1.2.7 Fractionation Effects-—— Observations at Other Tests --------------- 17
1.2.8 Fractionation Effects— Relations among the R-Values for
Several Radionuclides ----------+-+-------------++------+-s- 18
1.8 Experimental Program -- ------ 22-2 enter wee eee meer een ee ee nee 18
1.3.1 Outline of the Program ----------2-2 2-2 eee een ee ene een ee een 18
1.3.2 Rocket Sampling of Clouds -~-------------------------+-----+- 19
1.3.3 Aircraft Sampling of Clouds -----------------+---+----+------ 20
1.3.4 Aircraft Sampling of Fallout ---------------22--------e2--e-- 20
1.3.5 Selection of Radionuclides --------------------------e------ 21
CHAPTER 2
PROCEDURE ----------------- eens cen r nn nr een ee en nee 22
2.1 Shot Participation -----------+--------- +--+ - se ee nee ee eee eee
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2.2 Instrumentation - --------- 222-2 ee ee ee ee ee ee et ee ee eee ee ee ee
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2.3 Field Operations --------------------+------- +22 - ee eee eee ee
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2.3.3 Shot Walnut --------------------- + - 2 eee ee ee eee
2.3.4 Shot Oak -------------- 2-2 ee ee ee ee ee ee ee ee ee ee eee
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2.4 Particle Work -----------2- ee - ene een ee ee ee ee ee ee ee ee ee
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2.6 Data Reduction -------------c- ene eee ee ne ene ee ee ee ee eee eee
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RESULTS AND DISCUSSION -----------------------+------
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3.1 Discussion and Interpretation of the Data ----------------+----------
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3.1.2 Fallout Data -----------~--------------- ee ee ee eee eee eee
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2.2.1 Rocketborne Cloud Sampler - ----------------+---+-+---------- 22
2.2.2 Aircraftborne Samplers -----------------------+-+---------- 23
2.2.3 Possible Errors in Sampling -----------------------------+-- 23
2.3.1 Meteorology ------------+------------+--2-- 22 -- +--+ eee 24
2.3.2 Shot Koa ~-------- cen evn ne cee ene ne eee ee ee wee eee ewan 24
2.3.5 Rocket Development - ------------------------------------ 26
2.3.6 Aircraft Samples --------~--------------------+---------- 26
2.5 Sample Analysis and Radlochemical Procedures --------------------- 27
CHAPTER 3
3.1.1 Cloud Data ------------~-----+------------+--------+--- +e
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