INDEX A Accidents reactors, fractionation of fission products, 248-49 Actinium-228 determination by gamma ray spectroscopy, 185 Activity ratios (see also specific radioisotopes, e.g., Cesium~-137) changes during 1963, 128, 132 fission products in air during 1962 testing series, 488-89 fractionation studies, 129 radioisotopes in Arkansas rain, 605-9 radioisotopes in atmosphere over Pacific Northwest, 434, 435 radioisotopes formedin high yield bursts, 693 radioisotopes in groundlevel air, 620-24 radioisotopes in rain samples, 668-72 radioisotopes in storms in 1963, 588-90 radioisotopes in stratosphere, 173-80, 246-47, 327, 411-12 radioisotopes in stratosphere of southern hemisphere, 413-15 radioisotopes in surface air, 500-4 Adak, Alaska tritium concentrations since 1961, 654, 660, 672 Adams, Charlies E. *‘Nuclear-Debris Formation”, 1-43 Aerojet-General Corp. - “Kinetics of Wetting in Washout of Dust’’, 281-300 Aerosols altitudinal distribution in stratosphere, 158-82 coagulation, theory of self-preserving size distribution, 253-59 particle charging, 260-68, 279, 325-26 particle size distribution in strato- sphere, 134-43, 158-82 particle size measurement of tropospheric, 222-32 Africa tritium concentrations since 1961, Age 652, 657, 665 effects on milk consumption in U, S., 887 effects on 9¢Sr content of human bone in Argentina, 854-57 Agglomeration importance in fractionation predictions, 10, 23 nuclear debris formation, 1 Agriculture (see also Cattle, Soils, etc) fission product cycles, sample heterogeneity, 711-22 Agriculture Department soil sampling program, 378 Agriculture Department, Soil Conservation Service (see Soil Conservation Service) Agricultural Research Service rain gauge network in Oklahoma, 527, Air 529-30, 533 (eee aleo Atmosphere) activity at surface leve) im Brazil, 798 beta activity, effect on debris deposition, 723-36 cleansing by rain in convective storms, 566-81 debris concentration, relation to deposition, 784 oceanic, tritium content, 692 sampling along 80th meridian, 477-94 sampling at surface level, 477-96, 497-505, 616-28 Air bursts altitudinal distribution of debris, 692 cloud heights in Dominic I Operation, 630-31

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