element
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Information about Erbium-149:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 148.942174 | ± | 0.000506 | amu # |
| Excess Mass (Δ): | -53.864000 | ± | 0.471000 | MeV # |
| Binding Energy: | 1203.291000 | ± | 0.471000 | MeV # |
| β- Decay Energy: | -9.758000 | ± | 0.760000 | 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: 4 s ( 4 sec., λ = 0.173287 s-1)
- Mode of decay:
E.C. to
(Q = 7.700 MeV)
- Mode of decay: E.C. + p+ to
(Q = 6.700 MeV)
Branch ratio: 7.00 %
Meta state at 0.742 Mev
- Spin: 11/2-)
4
- Half life: 8.9 s ( 8.9 sec., λ = 0.0778817 s-1)
- Mode of decay:
E.C. to
(Q = 8.442 MeV)
Branch ratio: 96.50 %
- Mode of decay: γ (IT) (Q = 0.742 MeV)
Branch ratio: 3.50 %
- Mode of decay: E.C. + p+ to
(Q = 7.442 MeV)
Branch ratio: 0.18 %
- Possible parent nuclides:
- E.C. 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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