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Radiochemistry in Nuclear Power Reactors
Table A-3 . CUMULATIVE YIELDS OF MAJOR FISSION PRODUCTS IN THERMAL NEUTRON FISSION OF U-235 AND Pu-239
Nuclide
Half-life
Decay constant λ, l/s
Fission yields(Y), %
Y*λ
U-235
Pu-239
U-235
(U+Pu)/2
Br-84
31.80 m
3.63E-04
0.967
0.444
0.706
3.51E-06
2.56E-06
Kr-85 m
4.48 h
4.30E-05
1.300
0.565
0.933
5.59E-07
4.01E-07
Kr-85
10.72 y
2.05E-09
0.285
0.128
0.207
5.86E-12
4.24E-12
Kr-87
1.37 h
1.41E-04
2.520
0.990
1.755
3.54E-06
2.47E-06
Kr-88
2.84 h
6.78E-05
3.550
1.320
2.435
2.41E-06
1.65E-06
Kr-89
3.15 m
3.67E-03
4.600
1.440
3.020
1.69E-04
1.11E-04
Kr-90
32.30 s
2.15E-02
4.860
1.400
3.130
1.04E-03
6.72E-04
Rb-88
17.70 m
6.53E-04
3.570
1.360
2.465
2.33E-05
1.61E-05
Rb-89
15.40 m
7.50E-04
4.770
1.680
3.225
3.58E-05
2.42E-05
Rb-90
2.60 m
4.44E-03
4.500
1.390
2.945
2.00E-04
1.31E-04
Rb-90 m
4.30 m
2.69E-03
1.240
0.680
0.960
3.33E-05
2.58E-05
Rb-91
58.00 s
1.19E-02
5.670
2.160
3.915
6.77E-04
4.67E-04
Sr-89
50.50 d
1.59E-07
4.780
1.690
3.235
7.59E-09
5.14E-09
Sr-90
29.10 y
7.55E-10
5.910
2.110
4.010
4.46E-11
3.03E-11
Sr-91
9.51 h
1.93E-04
5.930
2.490
4.210
1.14E-05
8.11E-06
Sr-92
2.71 h
7.10E-05
5.910
3.040
4.475
4.20E-06
3.18E-06
Sr-93
7.40 m
1.56E-03
6.370
3.920
5.145
9.94E-05
8.03E-05
Y-90
2.67 d
3.00E-06
5.920
2.110
4.015
1.78E-07
1.21E-07
Y-91
58.50 d
1.37E-07
5.930
2.490
4.210
8.13E-09
5.77E-09
Y-92
3.54 h
5.44E-05
5.980
3.060
4.520
3.25E-06
2.46E-06
Y-93
10.20 h
1.89E-05
6.370
3.920
5.145
1.20E-06
9.71E-07
Zr-95
64.00 d
1.25E-07
6.490
4.890
5.690
8.14E-09
7.13E-09
Zr-97
16.80 h
1.15E-05
5.930
5.320
5.625
6.80E-07
6.45E-07
Nb-95
34.97 d
2.29E-07
6.490
4.890
5.690
1.49E-08
1.31E-08
Nb-97
1.23 h
1.57E-04
5.950
5.370
5.660
9.31E-06
8.86E-06
Mo-99
2.79 d
2.88E-06
6.120
6.160
6.140
1.76E-07
1.77E-07
Mo-101
14.60 m
7.91E-04
5.180
5.940
5.560
4.10E-05
4.40E-05
Tc-98 m
6.02 h
3.20E-05
5.380
5.420
5.400
1.72E-06
1.73E-06
Tc-101
14.20 m
8.14E-04
5.180
5.950
5.565
4.21E-05
4.53E-05
Tc-104
18.00 m
6.42E-04
1.920
5.960
3.940
1.23E-05
2.53E-05
Ru-103
39.27 d
2.04E-07
3.040
6.950
4.995
6.21E-09
1.02E-08
Ru-105
4.44 h
4.34E-05
0.972
5.360
3.166
4.22E-07
1.37E-06
Ru-106
1.02 y
2.15E-08
0.403
4.280
2.342
8.68E-11
5.05E-10
Rh-105
35.40 h
5.44E-06
0.972
5.360
3.166
5.29E-08
1.72E-07
Sb-125
2.76 y
7.96E-09
0.029
0.115
0.072
2.31E-12
5.73E-12
Te-129 m
33.60 d
2.39E-07
0.127
0.270
0.199
3.03E-10
4.74E-10
Te-132
3.26 d
2.46E-06
4.280
5.230
4.755
1.05E-07
1.17E-07
I-131
8.04 d
9.98E-07
2.880
3.850
3.365
2.87E-08
3.36E-08
I-132
2.28 h
8.44E-05
4.320
5.390
4.855
3.65E-06
4.10E-06
I-133
20.80 h
9.26E-06
6.690
6.930
6.810
6.19E-07
6.30E-07
I-134
52.60 m
2.20E-04
7.710
7.270
7.490
1.69E-05
1.65E-05
I-135
6.57 h
2.93E-05
6.300
6.450
6.375
1.85E-06
1.87E-06
I-136
1.39 m
8.31E-03
2.970
1.740
2.355
2.47E-04
1.96E-04
