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Radiochemistry in Nuclear Power Reactors
Table 2–4
MAJOR ACTIVATED CORROSION PRODUCTS IN LIGHT WATER REACTORS
Nuclide
Half-Life
Formation Reaction
Nature Isotopic Abundance (%)
Activation Cross Section (Barns) a
Thermal
Epithermal
Fast
51 Cr
27.7 d
50 Cr(n,γ)51 Cr
4.35
16.0
0.68
54 Mn
312.2 d
54 Fe(n,p)54 Mn
5.8
0.11
56 Mn
2.58 h
55 Mn(n,γ)56 Mn
100
13.3
1.13
55 Fe
2.73 y
54 Fe(n,γ)55 Fe
5.8
2.5
0.1
59 Fe
44.51 d
58 Fe(n,γ)59 Fe
0.3
1.14
0.1
58 Co
70.88 d
58 Ni(n,p)58 Cob
68.3
0.146
60 Co
5.27 y
59 Co(n,γ)60 Co
100
37.5
6.05
63 Ni
100 y
62 Ni(n,γ)63 Ni
3.6
14.6
0.77
65 Ni
2.52 h
64 Ni(n,γ)65 Ni
0.9
1.50
0.07
64 Cu
12.7 h
63 Cu(n,γ)64 Cu
69.2
4.4
0.40
65 Zn
243.8 d
64 Zn(n,γ)65 Zn
48.6
0.82
0.13
76 As
26.3 h
75 As(n,γ)76 As
100
4.4
5.08
95 Zr
64.02 d
94 Zr(n,γ)95 Zr
17.4
0.075
0.031
110m Ag
249.8 d
109 Ag(n,γ)110m Ag
48.17
4.7
113 Sn
115.1 d
112 Sn(n,γ)113 Sn
1.01
0.71
2.2
124 Sb
60.2 d
123 Sb(n,γ)124 Sb
42.7
4.0
9.7
181 Hf
42.4 d
180 Hf(n,γ)181 Hf
35.2
12.6
2.26
182 Ta
114.43 d
181 Ta(n,γ)182 Ta
100
22.0
56.4
187 W
23.9 h
186 W(n,γ)187 W
28.6
37.2
33.9
a Data for 20°C.
b Burnup cross section, σb , for Co-58 is 1.9×10−21 cm2 .
