element
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Information about Actinium-208:
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Mass-Energy Data:
Atomic Mass: | 208.011485 | ± | 0.000223 | amu # |
Excess Mass (Δ): | 10.698000 | ± | 0.207000 | MeV # |
Binding Energy: | 1598.508000 | ± | 0.207000 | 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+)
- Half life: 95 ms ( 0.095 sec., λ = 7.29629 s-1)
- Mode of decay:
α to
 (Q = 7.720 MeV)
Branch ratio: ~99.00 %
Meta state at 0.506 Mev
- Spin: (10-)
95
- Half life: 25 ms ( 0.025 sec., λ = 27.7259 s-1)
- Mode of decay:
α to
 (Q = 8.226 MeV)
Branch ratio: ~90.00 %
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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