AFMAN 24-204(I)/TM 38-250/NAVSUP PUB 505/MCO P4030.19H/ DLAI 4145.3 269 11 DECEMBER 2001 Symbol of Radionuclide Element and Atomic Number A₁(TBq) (Special form) ^A1^(Ci) (Special form) A₂(TBq) (Other form) ^A2^(Ci) (Other form) Specific activity (TBq/g) Specific activity (Ci/g) Co-60 0.4 10.8 0.4 10.8 4.2 x 10¹ 1.1 x 10³ Cr-51 Chromium (24) 30 811 30 811 3.4 x 10³ 9.2 x 10⁴ Cs-129 Cesium (55) 4 108 4 108 2.8 x 10⁴ 7.6 x 10⁵ Cs-131 40 1,080 40 1,080 3.8 x 10³ 1.0 x 10⁵ Cs-132 1 27.0 1 27.0 5.7 x 10³ 1.5 x 10⁵ Cs-134m 40 1,080 9 243 3.0 x 10⁵ 8.0 x 10⁶ Cs-134 0.6 16.2 0.5 13.5 4.8 x 10¹ 1.3 x 10³ Cs-135 40 1,080 0.9 24.3 4.3 x 10^-5 1.2 x 10^-3 Cs-136 0.5 13.5 0.5 13.5 2.7 x 10³ 7.3 x 10⁴ Cs-137 2 54.1 0.5 13.5 3.2 8.7 x 10¹ Cu-64 Copper (29) 5 135 0.9 24.3 1.4 x 10⁵ 3.9 x 10⁶ Cu-67 9 243 0.9 24.3 2.8 x 10⁴ 7.6 x 10⁵ Dy-159 Dysprosium (66) 20 541 20 541 2.1 x 10² 5.7 x 10³ Dy-165 0.6 16.2 0.5 13.5 3.0 x 10⁵ 8.2 x 10⁶ Dy-166 0.3 8.11 0.3 8.11 8.6 x 10³ 2.3 x 10⁵ Er-169 Erbium (68) 40 1,080 0.9 24.3 3.1 x 10³ 8.3 x 10⁴ Er-171 0.6 16.2 0.5 13.5 9.0 x 10⁴ 2.4 x 10⁶ Es-253 Einsteinium (99) 200 5,400 2.1 x 10^-2 5.4 x 100^-1 Es-254 30 811 3 x 10^-3 8.11 x 10^-2 Es-254m 0.6 16.2 0.4 10.8 Es-255 Eu-147 Europium (63) 2 54.1 2 54.1 1.4 x 10³ 3.7 x 10⁴ Eu-148 0.5 13.5 0.5 13.5 6.0 x 10² 1.6 x 10⁴ Eu-149 20 541 20 541 3.5 x 10² 9.4 x 10³ Eu-150 0.7 18.9 0.7 18.9 6.1 x 10⁴ 1.6 x 10⁶ Eu-152m 0.6 16.2 0.5 13.5 8.2 x 10⁴ 2.2 x 10⁶