51 Pu-239 Np-237 Np-239 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 Tb-161 U-237 U-239 Nuc lide Ce-141 Ce-141 Nd-147 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 Ce-141 U-237 Pu-239 U-237 Pu~-239 Pu-239 Reference Nuc lide 8.9x1073 9.8x1073 4.1x10711 1.0x1073 1.1x1071 2.5x1072 9.4x10711 1.2x1073 1.9x1073 6.8x1077 8.0x1074 3.0x1073 5.2x107? 1.4x1073 5 .4x1072 8.1x1079 4.0x10712 3.0x107! 5.7x10710 2.4104 1.0x10~2 1.1%1075 1.0x10° 4.3x1073 1.3x1076 Rate, R h7! H+0.5 Day Exposure 4.710717 3.5x103 1.4x103 5.7x1071 4.7103 3.8x103 4.3x103 5.1x1072 1.3x103 9.6x102 7.3x107! 3.5x10! 6.5x102 2.1x1072 1.9x103 9.8x10° Ci Km~2 H+0.5 Day Activity Per Unit Area, AT ONE METER, RONGELAP ISLAND - - 1.7x103 3.2x1072 7.1x102 ~ ~ . - Ci Km=2 H+26 Day Activity -Per Unit Area, ESTIMATED UNWEATHERED ACTIVITY ON SURFACE AND EXPOSURE RATE TABLE IV-5 (cont'd) 1.8x1073 Rate, R h7l {H+26 Day Exposure