CHAPTER 4 ° e . 3.10.2 location of Activity in the Particle ° e 3.10.1 Particle Appearance ® . 3.9.1 Activity in Size Fractionated Particles Particle Characteristics . . . « «»« « » e e e e 8 CONCLUSIONS AND RECOMMENDATIONS . Technical Recommendations . . « « « Operational Recommendations . . . +» .« 2. »« 2 «2 «6 « © «© e« ® e e e Radioactive Particle "Size Analysis . ° e @ oe # e o o e oeoeee oe e e es e ° Cd Results e e 3. 8.4 e e Detection Efficiency of the Scintillation Spectrometer e 3.8.3 e COUNTING CORRECTION FACTORS AND ORIGINAL CCOUNTING DATA . « «6 «© 6 « APPENDIX B WIND VECTORS . ° APPENDIX © RAD SAFE GAMMA SURVEY READINGS ° APPENDIX D LIQUID FALLOUT . . 6 «1 « APPENDIX E PERSONNEL ROSTER . « 2 3 + e e ° e IFC Spider and Trays with Cups * e e . . e ° e @ ¢e¢ e«© oo @ # @ @ @ ¢ © e e e e ee . e . e Bikini Atoll @ General View of IFC Station, Victor Island, e o oe ° . e Preparation of 2.5b Raft Stations (foreground) 2and1 Zero Time .. @ # @® ¢ @® © e® > eo e e Station Layout for Shot 4 . Station Layout for Shot 6 . Shot 1 Average Composite Decay Curve Shots 1 and 3 Representative Decay Curves Example of Shot 2 Decay Curve Plotted to Shots Shots 4 and 6 Representative Decay Curves o ¢ © @ © Station Layout for Shot 3 . 8 @ @ ¢ ee Station Layout for Shot | 1. Station Layout for Shot 2 . eee#ee#e @ e e e @ . @ e 6 Enivetok Atoll @ General View of IFC Station, Irene Island, 2° WE VRPEGEGR ES e . ee e e ° wm % e e e ® e e e . e ° * e e ° e . HW . Underside of Spider. a 133 e OMNIHM Nt cy Cover Door Closed and in Starting Position . Cover Door Open and Tray in Sampling Position IFC Schematic Wiring Diagram. . . eo. Presetting Time Delay on the Clock Tuner 7 SY WN MNN e Timer Box, Batteries, and Bluebox Mechan‘am o Glass Jars for Liquid Fallout Mounted on the e WwWwWwDYDhYPDNNh e Interior of the IFC, Showing the Yotor and Gear Reducer Ww e + “eo Variation of Beta Activity with Time’, Shot 1, Dog 1-24 min, Dog 0-12 hr, Easy 0-2 hr, Easy 0-12 hr 10 91 91 103 115 19 131 132 e ne rm e nN e e 85 89 100 101 101 APPENDIX A REFERENCES 79