element
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Information about Francium-207:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 206.996859 | ± | 0.000124 | amu |
| Excess Mass (Δ): | -2.925464 | ± | 0.115500 | MeV |
| Binding Energy: | 1605.624539 | ± | 0.115500 | MeV |
| β- Decay Energy: | -6.397000 | ± | 0.431000 | 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: 9/2-
- Half life: 14.8 s ( 14.8 sec., λ = 0.0468343 s-1)
- Mode of decay:
α to
(Q = 6.900 MeV)
Branch ratio: 95.00 %
- Mode of decay:
E.C. to
(Q = 5.710 MeV)
Branch ratio: 5.00 %
- 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)
Magnetic Dipole Moments and Electric Quadrupole Moments
| Ex(kev) | T1/2 | Spin | | m(nm) | | Q(b) | | Ref. Std. | Method | Reference |
| 0 | 14.8 s | 9/2- | | +3.89(8) | | | | [211Fr] | ABLS | PL 163B 66 (85) |
| | | | | | -0.16(5) st | | | ABLS | PL 163B 66 (85) |
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N. J. Stone, Table of Nuclear Magnetic Dipole and Electric Quadrupole Moments, to be published. 2000 Courtesy of T. Burrows at BNL/NNDC.
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