temperature dependent positron decay plus electron capture (b_ec) decay rates in units of inverse seconds both the ground and isomeric state are assumed to be in thermal equilibrium the rate is given in Clayton (1968) rate = (jg*rg+ji*ri*exp(-11.605*ei/t9)) 1 /(jg+ji*exp(-11.605*ei/t9))) where jg = 2J_0+1 for the ground state rg = decay rate for the ground state ji = 2J_i+1 for the isomeric state ri = decay rate for the isomeric state ei = energy (in MeV) of the isomeric state above the ground state t9 = temperature in units of 1.e+9 kelvins For positron decay plus electron capture, we list for each (Z,A) the decay rate INTO the isotope. The isotope listed is the DAUGHTER of the positron decay. example: the value 3.07E-14 (line 2, column 3) gives the decay rate for al26 -> mg26 at temperature t9 = 0.03 temperature (t9=1.e+9 K) Z A 0.03 0.05 0.1 0.3 0.5 1.0 1.5 mg 24 3.38E-01 3.38E-01 3.38E-01 3.38E-01 3.38E-01 3.39E-01 3.45E-01 mg 26 3.07E-14 3.07E-14 6.16E-14 1.45E-06 4.96E-05 6.98E-04 1.67E-03 s 34 4.54E-01 4.54E-01 4.54E-01 4.43E-01 3.67E-01 1.99E-01 1.39E-01 ar 38 1.51E-03 1.51E-03 1.51E-03 2.21E-03 6.71E-03 2.44E-02 3.87E-02 ca 42 1.02E+00 1.02E+00 1.02E+00 1.02E+00 1.02E+00 1.01E+00 9.04E-01 ca 44 4.85E-05 4.85E-05 4.85E-05 4.85E-05 4.83E-05 4.36E-05 3.68E-05 cr 50 2.45E+00 2.45E+00 2.45E+00 2.44E+00 2.32E+00 1.38E+00 8.57E-01 cr 52 1.43E-06 1.43E-06 1.43E-06 1.43E-06 1.47E-06 4.00E-06 1.23E-05 fe 54 3.59E+00 3.59E+00 3.59E+00 3.56E+00 3.12E+00 1.44E+00 8.56E-01 as 73 2.69E-05 2.70E-05 2.79E-05 3.36E-05 3.64E-05 3.89E-05 3.99E-05 se 74 4.47E-04 4.02E-04 3.25E-04 2.84E-04 2.78E-04 2.75E-04 2.74E-04 kr 78 6.54E-04 6.54E-04 6.54E-04 8.20E-04 1.18E-03 1.50E-03 1.58E-03 kr 81 4.21E-05 4.21E-05 4.21E-05 3.94E-05 3.38E-05 2.63E-05 2.35E-05 kr 82 9.07E-03 9.07E-03 9.06E-03 7.24E-03 5.23E-03 3.45E-03 2.90E-03 rb 85 1.24E-07 1.24E-07 1.24E-07 1.24E-07 1.41E-07 4.05E-07 8.18E-07 sr 83 1.63E-03 1.63E-03 1.63E-03 1.66E-03 1.70E-03 1.76E-03 1.79E-03 sr 85 7.18E-05 7.04E-05 6.12E-05 4.94E-05 4.74E-05 4.61E-05 4.57E-05 sr 87 2.41E-06 2.41E-06 2.41E-06 2.41E-06 2.41E-06 2.29E-06 1.96E-06 y 85 1.47E-03 1.47E-03 1.47E-03 1.47E-03 1.47E-03 1.50E-03 1.56E-03 y 89 2.46E-06 2.46E-06 2.46E-06 2.46E-06 2.46E-06 2.49E-06 2.82E-06 zr 89 9.48E-05 9.49E-05 9.51E-05 9.88E-05 1.01E-04 1.04E-04 1.05E-04 zr 91 3.23E-11 3.23E-11 3.23E-11 4.78E-11 1.09E-10 2.82E-10 3.96E-10 zr 92 6.33E-16 6.33E-16 4.20E-14 1.42E-09 1.13E-08 5.14E-08 8.30E-08 nb 91 7.46E-04 7.46E-04 7.46E-04 7.46E-04 7.46E-04 7.46E-04 7.52E-04 mo 89 5.42E-02 5.42E-02 5.42E-02 5.41E-02 5.41E-02 5.41E-02 5.41E-02 mo 90 7.97E-02 7.97E-02 7.97E-02 7.97E-02 7.97E-02 7.91E-02 7.58E-02 mo 91 3.68E-03 3.68E-03 3.68E-03 3.68E-03 3.68E-03 3.67E-03 3.67E-03 mo 93 7.00E-05 7.00E-05 7.00E-05 7.00E-05 7.00E-05 7.00E-05 6.99E-05 mo 94 3.94E-05 3.94E-05 3.94E-05 4.27E-05 4.95E-05 6.18E-05 6.82E-05 mo 95 9.63E-06 9.63E-06 9.61E-06 9.22E-06 8.91E-06 8.55E-06 8.40E-06 mo 96 1.87E-06 1.88E-06 1.90E-06 2.24E-06 2.43E-06 2.63E-06 2.70E-06 mo 97 5.22E-15 5.22E-15 1.42E-14 1.62E-11 7.13E-11 2.11E-10 2.98E-10 tc 93 1.16E-02 1.16E-02 1.16E-02 1.16E-02 1.16E-02 1.16E-02 1.16E-02 ru 95 2.30E-03 2.30E-03 2.30E-03 2.30E-03 2.30E-03 2.30E-03 2.30E-03 ru 96 1.17E-03 1.17E-03 1.17E-03 1.29E-03 1.43E-03 1.60E-03 1.67E-03 ru 97 3.76E-04 3.76E-04 3.76E-04 3.76E-04 3.76E-04 3.75E-04 3.73E-04 ru 99 4.98E-07 4.98E-07 6.18E-07 1.25E-05 2.20E-05 2.89E-05 3.09E-05 ru 101 6.66E-09 6.66E-09 6.66E-09 2.59E-08 2.03E-07 7.69E-07 1.03E-06 ru 102 3.02E-08 3.02E-08 3.02E-08 2.98E-08 2.70E-08 1.98E-08 1.68E-08 pd 102 8.94E-04 8.89E-04 8.78E-04 8.64E-04 8.61E-04 8.58E-04 8.57E-04 pd 104 1.72E-04 1.82E-04 1.97E-04 2.13E-04 2.17E-04 2.19E-04 2.20E-04 pd 106 4.80E-04 4.80E-04 4.80E-04 4.23E-04 3.13E-04 1.91E-04 1.52E-04 pd 108 1.39E-04 1.39E-04 1.39E-04 1.31E-04 1.04E-04 6.26E-05 4.86E-05 cd 104 6.42E-03 6.42E-03 6.42E-03 6.45E-03 6.56E-03 6.79E-03 6.92E-03 cd 105 2.28E-03 2.28E-03 2.28E-03 2.28E-03 2.28E-03 2.28E-03 2.28E-03 cd 106 1.86E-03 1.86E-03 1.87E-03 1.91E-03 1.93E-03 1.95E-03 1.96E-03 cd 108 1.99E-04 1.99E-04 2.00E-04 2.08E-04 2.12E-04 2.17E-04 2.19E-04 cd 110 3.93E-05 3.93E-05 3.93E-05 4.30E-05 4.86E-05 5.71E-05 6.12E-05 cd 114 4.82E-05 4.82E-05 4.82E-05 4.81E-05 4.62E-05 3.44E-05 2.62E-05 in 113 6.97E-08 6.97E-08 9.38E-08 8.08E-06 1.92E-05 2.98E-05 3.30E-05 sn 116 7.31E-04 7.31E-04 7.31E-04 7.31E-04 7.31E-04 7.16E-04 6.71E-04 sn 118 3.21E-03 3.21E-03 3.21E-03 3.21E-03 3.16E-03 2.46E-03 1.78E-03 sn 120 7.27E-04 7.27E-04 7.27E-04 7.15E-04 6.21E-04 3.67E-04 2.64E-04 sb 115 1.99E-03 1.99E-03 1.99E-03 1.96E-03 1.96E-03 1.95E-03 1.94E-03 sb 119 1.20E-05 1.20E-05 1.20E-05 1.20E-05 1.19E-05 9.69E-06 7.44E-06 sb 121 4.19E-07 4.19E-07 4.19E-07 4.19E-07 4.16E-07 3.51E-07 2.61E-07 te 114 3.30E-01 3.30E-01 3.30E-01 3.30E-01 3.28E-01 2.89E-01 2.45E-01 te 118 8.43E-04 8.43E-04 8.43E-04 8.70E-04 9.52E-04 1.09E-03 1.14E-03 te 120 1.43E-04 1.43E-04 1.43E-04 1.43E-04 1.43E-04 1.48E-04 1.58E-04 xe 117 8.25E-02 8.25E-02 8.25E-02 8.25E-02 8.28E-02 8.41E-02 8.52E-02 xe 121 4.47E-03 4.47E-03 4.47E-03 4.51E-03 4.55E-03 4.60E-03 4.62E-03 xe 122 3.30E-02 3.30E-02 3.30E-02 2.61E-02 1.83E-02 1.21E-02 1.03E-02 cs 129 8.67E-05 8.74E-05 8.80E-05 8.84E-05 8.85E-05 8.85E-05 8.86E-05 ba 127 2.27E-03 2.29E-03 2.40E-03 2.57E-03 2.62E-03 2.66E-03 2.67E-03 ba 132 4.01E-05 4.01E-05 4.01E-05 4.02E-05 4.25E-05 5.69E-05 6.81E-05 la 133 1.19E-04 1.19E-04 1.14E-04 7.57E-05 6.49E-05 5.81E-05 5.61E-05 ce 131 7.37E-03 7.37E-03 7.37E-03 7.35E-03 7.13E-03 6.36E-03 5.93E-03 ce 138 7.97E-03 7.97E-03 7.97E-03 7.97E-03 7.96E-03 7.43E-03 6.15E-03 pr 133 9.90E-03 9.90E-03 9.90E-03 9.90E-03 9.90E-03 9.90E-03 9.90E-03 pr 135 9.32E-04 9.32E-04 9.32E-04 9.50E-04 9.81E-04 1.03E-03 1.06E-03 pr 139 3.89E-04 3.89E-04 3.89E-04 3.89E-04 3.84E-04 3.28E-04 2.69E-04 pm 139 4.50E-03 4.50E-03 4.50E-03 4.50E-03 4.50E-03 4.48E-03 4.43E-03 pm 141 1.13E-03 1.13E-03 1.13E-03 1.13E-03 1.08E-03 8.60E-04 7.55E-04 sm 140 4.59E-01 4.59E-01 4.59E-01 4.58E-01 4.40E-01 3.38E-01 2.71E-01 sm 141 1.70E-02 1.70E-02 1.70E-02 1.78E-02 1.99E-02 2.35E-02 2.50E-02 sm 150 5.96E-10 6.90E-10 1.30E-08 2.72E-07 4.53E-07 6.30E-07 6.94E-07 sm 152 1.17E-09 1.19E-09 5.33E-09 1.39E-07 2.75E-07 4.50E-07 5.29E-07 eu 141 4.95E-02 4.95E-02 4.95E-02 4.95E-02 4.95E-02 4.78E-02 4.36E-02 eu 143 1.78E-02 1.78E-02 1.78E-02 1.76E-02 1.61E-02 1.19E-02 1.03E-02 eu 145 5.02E-04 5.02E-04 5.02E-04 5.02E-04 5.02E-04 5.02E-04 5.02E-04 gd 144 6.93E-01 6.93E-01 6.93E-01 6.93E-01 6.93E-01 6.67E-01 5.86E-01 gd 147 1.13E-04 1.14E-04 2.16E-04 2.96E-03 4.14E-03 4.88E-03 5.09E-03 gd 148 1.93E-04 1.93E-04 1.93E-04 7.20E-04 1.81E-03 3.09E-03 3.50E-03 gd 149 3.90E-05 4.30E-05 2.75E-04 1.68E-03 2.02E-03 2.22E-03 2.28E-03 gd 150 5.53E-05 5.53E-05 5.53E-05 5.53E-05 5.55E-05 8.49E-05 2.27E-04 gd 151 1.09E-05 1.09E-05 1.10E-05 2.05E-04 6.49E-04 1.13E-03 1.27E-03 gd 152 1.10E-05 1.10E-05 1.10E-05 1.10E-05 1.10E-05 1.67E-05 4.85E-05 gd 158 1.02E-10 1.02E-10 1.04E-10 1.31E-08 7.09E-08 2.48E-07 3.72E-07 tb 147 1.73E-02 1.73E-02 1.73E-02 1.73E-02 1.73E-02 1.73E-02 1.72E-02 dy 149 3.29E-02 3.29E-02 3.28E-02 3.24E-02 3.18E-02 3.11E-02 3.08E-02 dy 150 9.63E-03 9.63E-03 9.63E-03 9.63E-03 9.63E-03 9.63E-03 9.78E-03 dy 151 1.54E-02 1.54E-02 1.53E-02 1.49E-02 1.46E-02 1.42E-02 1.40E-02 dy 152 3.77E-03 3.77E-03 3.77E-03 3.84E-03 4.50E-03 6.97E-03 8.28E-03 dy 153 5.75E-03 5.75E-03 5.75E-03 5.70E-03 5.60E-03 5.43E-03 5.35E-03 dy 158 1.02E-03 1.02E-03 1.02E-03 9.91E-04 9.40E-04 8.60E-04 8.22E-04 dy 160 4.51E-04 4.51E-04 4.51E-04 4.33E-04 4.07E-04 3.70E-04 3.54E-04 dy 162 7.70E-04 7.70E-04 7.70E-04 7.23E-04 5.80E-04 3.76E-04 3.08E-04 ho 149 1.73E-01 1.73E-01 1.73E-01 1.73E-01 1.73E-01 1.73E-01 1.71E-01 er 153 4.22E-02 4.22E-02 4.21E-02 4.15E-02 4.10E-02 4.03E-02 4.00E-02 er 155 3.15E-02 3.15E-02 3.15E-02 3.09E-02 3.04E-02 2.99E-02 2.96E-02 er 160 1.23E-03 1.23E-03 1.23E-03 1.26E-03 1.30E-03 1.33E-03 1.34E-03 yb 166 4.36E-03 4.36E-03 4.36E-03 4.41E-03 4.44E-03 4.46E-03 4.47E-03 yb 168 2.10E-03 2.10E-03 2.10E-03 2.10E-03 2.10E-03 2.08E-03 2.06E-03 hf 180 1.95E-05 1.95E-05 1.94E-05 1.45E-05 9.25E-06 5.34E-06 4.29E-06 w 162 3.89E-01 3.89E-01 3.89E-01 3.98E-01 4.96E-01 6.92E-01 7.40E-01 w 163 1.21E+00 1.21E+00 1.21E+00 1.20E+00 1.18E+00 1.14E+00 1.13E+00 w 165 6.93E-01 6.93E-01 6.91E-01 6.29E-01 5.78E-01 5.28E-01 5.09E-01 w 184 2.11E-07 2.11E-07 2.11E-07 2.09E-07 1.76E-07 8.00E-08 5.18E-08 re 181 1.10E-04 1.10E-04 1.66E-04 1.67E-03 2.45E-03 3.00E-03 3.16E-03 re 183 1.48E-05 1.48E-05 1.48E-05 1.48E-05 1.48E-05 1.49E-05 1.49E-05 os 167 1.97E+01 1.97E+01 1.97E+01 1.97E+01 1.94E+01 1.79E+01 1.66E+01 os 172 1.54E-01 1.54E-01 1.54E-01 1.55E-01 1.63E-01 1.88E-01 2.02E-01 os 174 8.73E-02 8.73E-02 8.73E-02 8.74E-02 8.85E-02 9.67E-02 1.04E-01 os 190 6.81E-07 6.81E-07 6.81E-07 6.81E-07 7.04E-07 2.45E-06 7.55E-06 ir 183 1.78E-03 1.80E-03 2.75E-03 9.13E-03 1.10E-02 1.22E-02 1.26E-02 ir 185 1.63E-04 1.63E-04 1.63E-04 1.64E-04 1.66E-04 1.73E-04 1.78E-04 pt 184 3.30E-02 3.30E-02 3.30E-02 3.21E-02 3.07E-02 2.85E-02 2.75E-02 pt 189 4.03E-04 4.03E-04 4.03E-04 4.03E-04 4.43E-04 9.40E-04 1.40E-03 au 185 1.33E-02 1.33E-02 1.33E-02 1.35E-02 1.39E-02 1.43E-02 1.44E-02 au 193 5.07E-05 5.07E-05 5.07E-05 5.01E-05 4.65E-05 3.63E-05 3.15E-05 au 195 1.94E-05 1.94E-05 1.94E-05 1.93E-05 1.76E-05 1.12E-05 8.33E-06 au 197 3.00E-06 3.00E-06 3.00E-06 3.00E-06 2.99E-06 2.59E-06 2.06E-06 hg 189 5.02E-03 5.02E-03 5.02E-03 5.02E-03 5.05E-03 5.54E-03 6.19E-03 hg 192 1.20E-03 1.20E-03 1.20E-03 1.20E-03 1.19E-03 1.16E-03 1.14E-03 hg 193 5.35E-04 5.35E-04 5.35E-04 5.35E-04 5.36E-04 5.91E-04 7.26E-04 hg 196 1.05E-04 1.05E-04 1.05E-04 1.05E-04 1.05E-04 1.05E-04 1.08E-04 hg 198 3.63E-05 3.63E-05 3.63E-05 3.63E-05 3.63E-05 3.64E-05 3.72E-05 tl 191 8.69E-03 8.69E-03 8.69E-03 8.63E-03 8.26E-03 7.28E-03 6.84E-03 tl 195 7.70E-04 7.70E-04 7.70E-04 7.70E-04 7.70E-04 7.70E-04 7.70E-04 tl 197 1.44E-03 1.44E-03 1.44E-03 1.44E-03 1.44E-03 1.35E-03 1.16E-03 tl 199 1.28E-04 1.28E-04 1.28E-04 1.28E-04 1.28E-04 1.27E-04 1.21E-04 tl 201 2.06E-05 2.06E-05 2.06E-05 2.06E-05 2.06E-05 2.08E-05 2.23E-05 pb 191 2.25E-02 2.25E-02 2.25E-02 2.26E-02 2.34E-02 3.60E-02 5.63E-02 pb 193 9.98E-03 9.98E-03 9.98E-03 9.98E-03 9.99E-03 1.00E-02 1.02E-02 pb 195 3.79E-03 3.79E-03 3.79E-03 3.79E-03 3.79E-03 3.79E-03 3.80E-03 pb 196 2.25E-03 2.25E-03 2.25E-03 2.25E-03 2.25E-03 2.24E-03 2.22E-03 pb 197 1.24E-03 1.24E-03 1.24E-03 1.24E-03 1.24E-03 1.24E-03 1.24E-03 pb 199 4.28E-04 4.28E-04 4.28E-04 4.28E-04 4.28E-04 4.28E-04 4.28E-04 pb 201 1.07E-04 1.07E-04 1.07E-04 1.07E-04 1.07E-04 1.07E-04 1.07E-04