核素

热堆

快堆

σf/barn

σc/barn

α

σf/barn

σc/barn

α

235U

21.9

6.19

0.283

2

0.564

0.282

238U

0.119

0.866

7.277

0.044

0.299

6.795

238Pu

2.07

15.1

7.295

1.03

0.663

0.644

239Pu

45.8

25.2

0.55

1.85

0.514

0.278

240Pu

0.65

41.8

64.31

0.372

0.405

1.089

241Pu

52.4

17.4

0.332

2.63

0.59

0.224

242Pu

0.492

19.0

38.62

0.263

0.572

2.175

237Np

0.52

33

63.46

0.32

1.7

5.313

241Am

1.1

110

100

0.27

2.0

7.407

243Am

0.44

49

111.4

0.21

1.8

8.571

244Cm

1.0

16

16

0.42

0.6

1.429

245Cm

116

17

0.147

5.1

0.9

0.176