element
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Information about Tantalum-157:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 156.968145 | ± | 0.000642 | amu # |
| Excess Mass (Δ): | -29.673000 | ± | 0.598000 | MeV # |
| Binding Energy: | 1239.759000 | ± | 0.598000 | 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: 10.1 ms ( 0.0101 sec., λ = 68.6284 s-1)
- Mode of decay:
α to
(Q = 6.380 MeV)
Branch ratio: 96.60 %
Meta state at 0.022 Mev
- Spin: 11/2-
10.1
- Half life: 4.3 ms ( 0.0043 sec., λ = 161.197 s-1)
- Mode of decay:
α to
(Q = 6.402 MeV)
Branch ratio: 95.00 %
- 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)
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