3) (20 points) Calculate the activity for 5 kg of $^{239}Pu$.
Am 239
11.9 h
Am 240
50.8 h
\alpha 5.378...
a-g
\gamma 278, 228... e$^-
\alpha 5.774, 5734...
Pu 238
87.7 a
\alpha 5.499, 5.456... sf
\gamma (43, 100...), e$^-\sf
Si, Mg
\alpha 510, 17
Np 237
Pu 239
24110 a
\alpha 5.157, 5.144...
\gamma (13, 52...), e^-
m, sf
\alpha 270, \alpha 752
Np 238
2099 d
Am 241
432.6 a
\alpha 5.486, 5.443...
\gamma 60, 26... e^- g
sf
\alpha 60 + 640
\alpha 3.15
Pu 240
6561 a
\alpha 5.168, 5.124...
\gamma (45...), e^- g
sf
\alpha 290, \alpha 0.059
Np 239
2.356 d
\alpha 0.4, 0.7...