Template:Actinium series

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[edit] Actinium series

The 4n+3 chain of U-235 is commonly called the "actinium series".

nuclide	decay mode	half life	energy released, MeV	product of decay
Pu 239	α	2.41·104 a	5.244	U 235
U 235	α	7.04·108 a	4.678	Th 231
Th 231	β-	25.52 h	0.391	Pa 231
Pa 231	α	32760 a	5.150	Ac 227
Ac 227	β- 98.62% α 1.38%	21.772 a	0.045 5.042	Th 227 Fr 223
Th 227	α	18.68 d	6.147	Ra 223
Fr 223	β-	22.00 min	1.149	Ra 223
Ra 223	α	11.43 d	5.979	Rn 219
Rn 219	α	3.96 s	6.946	Po 215
Po 215	α 99.99977% β- 0.00023%	1.781 ms	7.527 0.715	Pb 211 At 215
At 215	α	0.1 ms	8.178	Bi 211
Pb 211	β-	36.1 m	1.367	Bi 211
Bi 211	α 99.724% β- 0.276%	2.14 min	6.751 0.575	Tl 207 Po 211
Po 211	α	516 ms	7.595	Pb 207
Tl 207	β-	4.77 min	1.418	Pb 207
Pb 207	.	stable	.	.