922 INDEX 99, 101 activity ratios in stratosphere of southern hemisphere, 413-15 content in air in 1962, effect of U. S. testing series, 488-89 contribution to total fission product dose rate, 33 determination in particles from Dominic Operation, 108-18 determination in rain and snow samples, 603 determination in stratospheric aerosols, 158, 163-64 disintegration ratio to 99Mo before Sedan and Small Boy bursts, 93-6 formation in nuclear explosions, 606-8 fractionation correlation for Dominic Operation, 113 fractionation index in Sedan and Small Boy bursts, 94-7 fractionation ratio with Zr data from silicate bursts, 72-81 washout factors, 725 Barium-140 systems (140Ba~i40La) deposition in 1962-1964, 196 determination in rainwater, 569, 574, 577, 578 determination in surface air, 498 environmental level studies, 235-38 fractionation predictions for, 9-10 Base surge geometries of, from underground bursts, 335-39 Bass sodium-22 content, 219 Bazan, Fernando ‘Stratospheric Distribution of Nuclear Debris in 1962, 1963, and 1964’, 301-22 Beans sodium-22 content, 219 Beck, Harold L. “‘Dosimetric Investigations of Enrironmental Gamma Radiation from Deposited Fission Products’’, 233-44 Beef sodium-22 content, 219 Belém, Brazil debris deposition data, 793 Beninson, D. “Studies of *Sr and Stable Strontium in Diet and Bone in Argentina’’, 850-58 Benson, P. ‘Physical Characteristics of Single Particles from High-Yield Air Bursts’’, 98-107 ‘*Radiochemical Fractionation Characteristics of Single Particles from High-Yield Air Bursts’’, 108-118 Beryllium-7 concentration in air at Richland, Washington, 206-7 levels in surface air, 497, 498, 503 measurement accuracy with pulse analyzer, 246 measurementin air filter samples by gamma ray spectrometry, 198-99 origin in atmosphere, 688 Beta emitters distribution dependence on particle size, 123-27 dry-deposition velocities, 725 relation of activity to particle size, 98, 99, 101-3 retention by polyethylene, 689 washout factors, 725 Beta rays activity in air, effect on debris deposition, 723-26 activity in atmosphere, Springfield Project studies, 441-42, 445-47 activity change of fission products during 1963-1964, 130-31 activity measurement along 80th meridian, 480~85, 618 activity in stratospheric aerosols, 158, 163-72, 181 measurement techniques for rain samples, 689-90 thallium-204 reference standard, 689 variability in rainwater samples, 511-14, 532-65 Bethel, Alaska tritium concentrations since 1961, 655- 56, 661 Biological half-life cesium-137 in cows, 865 Biosphere (see Environment) Bismuth-214 determination by gamma ray spectroscopy, 185 environmental level studies, 235-38 ground surface amounts at various times in 1963 and 1964, 189, 190 Bismuth-214 systems (214Bi-214Ph) size distribution of particles, 127, 133 Black, Robert W. “‘Atmospheric Radioactivity along the 80th Meridian (West)’’, 477-96 Blanca burst gamma activity of close-in fallout, 333-35 Blowers air sampling use, 478-80 Body burdens cesium-137 in Norwegian school boys, 859-64 data center for, 844 particulate materials, 151-52 Body weight cesium-137 variation with, in Norwegian children, 862-64 Bolin, Bert “Oxygen-18, Deuterium, and Tritium in Natural Waters and Their Relations to the Global Circulation of Water’’, 675-86 Bolivia air sampling, 479, 487, 619-22

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