Basic Info
Fission Yield
element
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Information about Selenium-81:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 80.917993 | ± | 0.000002 | amu |
| Excess Mass (Δ): | -76.389081 | ± | 0.001973 | MeV |
| Binding Energy: | 703.566213 | ± | 0.001976 | MeV |
| β- Decay Energy: | 1.585282 | ± | 0.002606 | 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: 1/2-
- Half life: 18.45 min ( 1107 sec., λ = 0.000626149 s-1)
- Mode of decay:
β- to
(Q = 1.585 MeV)
Meta state at 0.103 Mev
- Spin: 7/2+
18.45
- Half life: 57.28 min ( 3436.8 sec., λ = 0.000201684 s-1)
- Mode of decay: γ (IT) (Q = 0.103 MeV)
Branch ratio: 99.95 %
- Mode of decay:
β- to
(Q = 1.688 MeV)
Branch ratio: 0.05 %
- Possible parent nuclides:
- β- 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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