element
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Information about Radium-207:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 207.003727 | ± | 0.000446 | amu # |
| Excess Mass (Δ): | 3.472000 | ± | 0.415000 | MeV # |
| Binding Energy: | 1598.445000 | ± | 0.415000 | MeV # |
| β- Decay Energy: | -7.794000 | ± | 0.364000 | 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: 2-,3/2-)
- Half life: 1.3 s ( 1.3 sec., λ = 0.53319 s-1)
- Mode of decay:
α to
(Q = 7.270 MeV)
Branch ratio: ~90.00 %
- Mode of decay: E.C. to
(Q = 6.400 MeV)
Branch ratio: ~10.00 %
Meta state at 0.470 Mev
- Spin: 13/2+)
1.3
- Half life: 55 ms ( 0.055 sec., λ = 12.6027 s-1)
- Mode of decay: γ (IT) to
(Q = 0.470 MeV)
Branch ratio: 85.00 %
- Mode of decay:
α to
(Q = 7.740 MeV)
Branch ratio: 15.00 %
- Mode of decay: E.C. to
(Q = 6.870 MeV)
Branch ratio: ~0.35 %
- 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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