element
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Information about Dubnium-257:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 257.107858 | ± | 0.000250 | amu # |
| Excess Mass (Δ): | 100.469000 | ± | 0.233000 | MeV # |
| Binding Energy: | 1891.713000 | ± | 0.233000 | 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: 1.3 s ( 1.3 sec., λ = 0.53319 s-1)
- Mode of decay: α to
(Q = 9.310 MeV)
Branch ratio: 82.00 %
- Mode of decay: SF
Branch ratio: 17.00 %
- Mode of decay: E.C. to
(Q = 4.300 MeV)
Branch ratio: 1.00 %
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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