element
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Information about Astatine-204:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 203.987262 | ± | 0.000100 | amu |
| Excess Mass (Δ): | -11.865779 | ± | 0.092828 | MeV |
| Binding Energy: | 1591.915593 | ± | 0.092829 | MeV |
| β- Decay Energy: | -3.822000 | ± | 0.168000 | 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: 7+
- Half life: 9.2 min ( 552 sec., λ = 0.0012557 s-1)
- Mode of decay:
E.C. to
(Q = 6.480 MeV)
Branch ratio: 96.20 %
- Mode of decay:
α to
(Q = 6.070 MeV)
Branch ratio: 3.80 %
Meta state at 0.587 Mev
- Spin: (10-)
9.2
- Half life: 108 ms ( 0.108 sec., λ = 6.41803 s-1)
- Mode of decay: γ (IT) (Q = 0.587 MeV)
- 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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