O C. 9018933 TABLE OF CONTENTS ABSTRACT . © © © © © © © © © © © ACKNOWLEDGMENTS... . . « «© © © © INTRODUCTION .. . 6 © © we ee PREFACE 2. .. CHAPTER 1. 2. «6 2. © 26 «6 «© © © .« © 2. © Background 2nd Theory * e e ° « ° . 8 . bee NN nN MN nrn 1.2 set Objectives oe © ee ee 2. 1.1 1,3 wo o --- + eo ew ee ee ee © © © © © © © © © © © © «© oe 1} eo ee 11 11 14 Formation and Nature of Fallout Particles Cloud Development «. - + soe ° . e . ° . Transport and Distribution« - 19 20 Procedures for the Determination of Fallout Partition - 23 Prior Estimztes of Local Fallout .... . World Wide Fallout. . 2... 2. 1. ew wee Fractionztion Effects (I): Observations at other Tests . 28 30 for Several Rediontclides 32 Fractionztion Effects (U}: Relations among the R-Values .....-. 2. Outline of the Pregream.. +. + + ..s... + + + + 1.3.3 Aircreft Sempling of Clouds + + 1.3.4 Aircraft Stmpling cf Fallout - 1.3.5 Selezticn of Radionuclides PROCEDURE... 2.1 Shot Participation 2.2 Instrumentztion 2.2.1 *& - 1,3,2 Rocket Sampling of Clords CHAPTER 2, we ee ee ew Experimental Program ..... 1.3.1 oe e - eo 8 0 8 + ee 2 2 © : Rocket-Borre Cloud Sampler +e « © + ees + « « +--+ + «+ . e ° e . e . ° ° 34 . . ° 34 35 ° ° ° ° - . - . e : . ° we ww . . . . . « e «+ « - «+ « . ° e e ° . ° . . ° - . 26 . ° 40 . ° 40 41 e ° 36 37 39 « ° 41