element
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Information about Polonium-212:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 211.988852 | ± | 0.000003 | amu |
| Excess Mass (Δ): | -10.384522 | ± | 0.002909 | MeV |
| Binding Energy: | 1655.787271 | ± | 0.002922 | MeV |
| β- Decay Energy: | -1.753912 | ± | 0.002874 | MeV |
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra,
Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:
- Spin: 0+
- Half life: 0.299 µs ( 2.99×10-07 sec., λ = 2.31822×10+06 s-1)
- Mode of decay:
α to
(Q = 8.954 MeV)
Meta state at 1.355 Mev
- Spin: 6+
0.299
- Half life: 0.76 ns ( 7.6×10+08 sec., λ = 9.12036×10-10 s-1)
- Mode of decay:
α to
(Q = 10.310 MeV)
Branch ratio: ~71.00 %
- Mode of decay: γ (IT) to
(Q = 1.355 MeV)
Branch ratio: ~29.00 %
Meta state at 1.476 Mev
- Spin: 8+
0.76
- Half life: 17.1 ns ( 1.71×10+10 sec., λ = 4.05349×10-11 s-1)
- Mode of decay: γ (IT) to
(Q = 1.476 MeV)
Branch ratio: ~58.00 %
- Mode of decay:
α to
(Q = 10.430 MeV)
Branch ratio: ~42.00 %
Meta state at 2.922 Mev
- Spin: (18+)
17.1
- Half life: 45.1 s ( 45.1 sec., λ = 0.0153691 s-1)
- Mode of decay:
α to
(Q = 11.876 MeV)
Branch ratio: 99.93 %
- Mode of decay: γ (IT) to
(Q = 2.922 MeV)
Branch ratio: 0.07 %
- Possible parent nuclides:
- β- from
- α from
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)
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