51 Pu-239 Np- 239 U-237 U-239 Np-237 Tb-161 Ce-141 Ce-141 Nd-147 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Pr-146 Nd-144 Nd-147 Nd-149 Pm-147 Pm-149 Pm-150 Pm-151 Sm-151 Sm-153 Sm- 156 Eu-155 Eu-156 Eu-157 Eu- 158 Gd-159 Pu-239 Pu-239 U-237 Ce-141 Ce-141 Ce-141 U-237 Pu-239 Ce-141 Ce-141 Ce-141 Ce-141 Nuc lide Nuc lide Reference 5.2x1078 7 8.9x1073 9.8x1073 4.1x10711 1.0x107-3 1.1x1071! 2.5x1072 9.4x10711 1.2x1073 1.9x1073 6.8x1077 8.0x1074 3.0x1073 5.2x1077 1.4x1073 1.3x1076 5 .4x1072 8.1x1079 4.0x107!2 3.0x107! 5.7x10710 Rate, R h7! 2.6x1073 4.7x10717 3.5x103 1.4x103 5.7x1071 4.7x103 3.8x103 4.3x103 5.1x1072 1.3x103 9.6x102 7.3x1071 3.5x10! 6.5x102 2.1x1072 1.9x103 9.8x109 2.4104 1.0x1072 1.1x1075 1.0x10° 4.3x1073 Ci_Km~2 Exposure H+0.5 Day H+0.5 Day Activity Per Unit Area, AT ONE METER, RONGELAP ISLAND 7.1102 Ci Km72 H+26 Day Activity -Per Unit Area, ESTIMATED UNWEATHERED ACTIVITY ON SURFACE AND EXPOSURE RATE TABLE IV-5 (cont'd) 1.8x1073 Rate, R hv! H+26 Day Exposure