element
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Information about Astatine-212:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 211.990735 | ± | 0.000004 | amu |
| Excess Mass (Δ): | -8.630610 | ± | 0.004069 | MeV |
| Binding Energy: | 1653.251006 | ± | 0.004079 | MeV |
| β- Decay Energy: | 0.042624 | ± | 0.004109 | 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: (1-)
- Half life: 0.314 s ( 0.314 sec., λ = 2.20748 s-1)
- Mode of decay:
α to
(Q = 7.829 MeV)
- Mode of decay: E.C. to
(Q = 1.754 MeV)
Branch ratio: <0.03 %
- Mode of decay: β- to
(Q = 0.043 MeV)
Branch ratio: <2.0E-6 %
Meta state at 0.222 Mev
- Spin: (9-)
0.314
- Half life: 0.119 s ( 0.119 sec., λ = 5.82477 s-1)
- Mode of decay:
α to
(Q = 8.051 MeV)
Branch ratio: >99.00 %
- Mode of decay: γ (IT) to
(Q = 0.222 MeV)
Branch ratio: <1.00 %
- 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 |
| 888 | 19.4 ns | 11+ | | 5.94(11) | | | | | TDPAD | NP A567 445 (94) |
| | | | 5.95(12) | | | | | | |
| 1616 | 37 ns | 15- | | 9.46(8) | | | | | TDPAD | NP A567 445 (94) |
| | | | 9.33(15) | | | | | TDPAD | PR C20 960 (79) |
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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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