Isotope half-life gamma energies (KeV)
Th232 |
1.405
x 1010 years |
63.8
(0.267%) |
|
Ra228 |
6.7
years |
------ |
|
Ac228 |
6.13
hours |
57.7
(0.487%) 99.5
(1.28%) 129.0
(2.42%) 154.0
(0.737%) 209.3
(3.88%) 270.2
(3.43%) 328.0
(2.95%) 338.3 (11.3%) 409.5
(1.94%) 463.0
(4.44%) 772
(1.50%) 794.9
(4.36%) 835.7
(1.61%) 911.2
(26.6%) 964.8
(5.11%) 969.0
(16.2%) 1588.2
(3.27%) |
|
Th228 |
1.91
years |
84.4
(1.22%) |
|
Ra224 |
3.64
days |
241.0
(3.97%) |
|
Rn220 |
55
seconds |
550
(0.07%) |
|
Po216 |
0.15
seconds |
------ |
|
Pb212 |
10.64
hours |
238.6
(43.6%) 300.0
(3.34%) |
|
Bi212 |
60.6
minutes |
39.9
(1.1%) 727.3
(6.65%) |
|
64.06% 35.94% Po212 Tl208 |
304
nsec 3.1 minutes |
------- 277.4 (6.31%) 510.77 (22.6%) 583.2 (84.5%) 763.1 (1.81%) 860.6 (12.4%) |
|
Pb208 |
stable |
------- |