element
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Information about Astatine-220:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 220.015301 | ± | 0.000120 | amu # |
| Excess Mass (Δ): | 14.253000 | ± | 0.112000 | MeV # |
| Binding Energy: | 1694.938000 | ± | 0.112000 | MeV # |
| β- Decay Energy: | 3.649000 | ± | 0.112000 | 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: 3.71 min ( 222.6 sec., λ = 0.00311387 s-1)
- Mode of decay:
β- to
(Q = 3.650 MeV)
Branch ratio: 92.00 %
- Mode of decay:
α to
(Q = 6.050 MeV)
Branch ratio: 8.00 %
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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