element
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Information about Polonium-197:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 196.985567 | ± | 0.000207 | amu # |
| Excess Mass (Δ): | -13.445000 | ± | 0.193000 | MeV # |
| Binding Energy: | 1537.778000 | ± | 0.193000 | MeV # |
| β- Decay Energy: | -7.194000 | ± | 0.400000 | 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: (3/2-)
- Half life: 53.6 s ( 53.6 sec., λ = 0.0129319 s-1)
- Mode of decay: E.C. to
(Q = 6.200 MeV)
Branch ratio: 56.00 %
- Mode of decay:
α to
(Q = 6.410 MeV)
Branch ratio: 44.00 %
Meta state at 0.204 Mev
- Spin: 13/2+)
53.6
- Half life: 25.8 s ( 25.8 sec., λ = 0.0268662 s-1)
- Mode of decay:
α to
(Q = 6.614 MeV)
Branch ratio: 84.00 %
- Mode of decay: E.C. to
(Q = 6.404 MeV)
Branch ratio: 16.00 %
- Mode of decay: γ (IT) to
(Q = 0.204 MeV)
Branch ratio: 0.01 %
- Possible parent nuclides:
- 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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