element
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Information about Neptunium-228:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 228.036180 | ± | 0.000210 | amu # |
| Excess Mass (Δ): | 33.701000 | ± | 0.196000 | MeV # |
| Binding Energy: | 1733.801000 | ± | 0.196000 | MeV # |
| β- Decay Energy: | -2.373000 | ± | 0.198000 | 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: 61.4 s ( 61.4 sec., λ = 0.011289 s-1)
- Mode of decay: E.C. to
(Q = 4.480 MeV)
Branch ratio: 60.00 %
- Mode of decay:
α to
(Q = 7.420 MeV)
Branch ratio: 40.00 %
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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