element
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Information about Neptunium-229:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 229.036247 | ± | 0.000093 | amu |
| Excess Mass (Δ): | 33.763734 | ± | 0.086889 | MeV |
| Binding Energy: | 1741.810323 | ± | 0.086890 | MeV |
| β- Decay Energy: | -3.625437 | ± | 0.112435 | 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:
- Half life: 4.0 min ( 240 sec., λ = 0.00288811 s-1)
- Mode of decay:
α to
(Q = 7.010 MeV)
Branch ratio: >50.00 %
- Mode of decay: E.C. to
(Q = 2.560 MeV)
Branch ratio: <50.00 %
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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