element
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Information about Americium-240:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 240.055288 | ± | 0.000015 | amu |
| Excess Mass (Δ): | 51.500271 | ± | 0.013925 | MeV |
| Binding Energy: | 1811.293630 | ± | 0.013929 | MeV |
| β- Decay Energy: | -0.215380 | ± | 0.013941 | 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-)
- Half life: 50.8 h ( 182880 sec., λ = 3.79017×10-06 s-1)
- Mode of decay:
E.C. to
(Q = 1.379 MeV)
- Mode of decay:
α to
(Q = 5.710 MeV)
Branch ratio: 0.00019 %
Meta state at 3.000 Mev
50.8 - Half life: 0.942 ms ( 0.000942 sec., λ = 735.825 s-1)
- Mode of decay: SF
(Q = 0 0.000 MeV)
Branch ratio: <=100.00 %
- 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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