Principal Primary Fission Products

     
       

Isotope

Symbol

Half-life

 

Strontium

89 Sr

53

Days

Strontium

90 Sr

28

Years

Yttrium

90Y

62.4

Hours

Yttrium

91Y

57

Days

Zirconium

95Zr

65

Days

Niobium

95Nb

35

Days

Molybdenum

99Mo

68.3

Hours

Ruthenium

103Ru

39.8

Days

Ruthenium

106Ru

1

Years

Rhodium

103mRh

57

Minutes

Rhodium

106Rh

30

Seconds

Tellurium

132Te

77.7

Hours

Iodine

131I

8.1

Days

Iodine

132I

2.4

Hours

Xenon

133Xe

5.27

Days

Cesium

137Cs

30

Years

Barium

137Ba

2.6

Minutes

Barium

140Ba

12.8

Days

Lanthanum

140La

40

Hours

Cerium

141Ce

32.5

Days

Cerium

144Ce

290

Days

Praseodymium

143Pr

13.7

Days

Praseodymium

144Pr

17.5

Minutes

Neodymium

147Nd

11

Days

Promethium

147Pm

2.6

Years

Promethium

149Pm

54

Hours