element
|
Information about Lanthanum-129:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 128.912667 | ± | 0.000055 | amu |
| Excess Mass (Δ): | -81.349842 | ± | 0.051295 | MeV |
| Binding Energy: | 1077.956340 | ± | 0.051296 | MeV |
| β- Decay Energy: | -5.050000 | ± | 0.200000 | 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: 3/2+
- Half life: 11.6 min ( 696 sec., λ = 0.000995901 s-1)
- Mode of decay:
E.C. to
(Q = 3.720 MeV)
Meta state at 0.172 Mev
- Spin: 11/2-
11.6
- Half life: 0.56 s ( 0.56 sec., λ = 1.23776 s-1)
- Mode of decay: γ (IT) (Q = 0.172 MeV)
- 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)
|