element
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Information about Curium-240:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 240.055519 | ± | 0.000003 | amu |
| Excess Mass (Δ): | 51.715651 | ± | 0.002732 | MeV |
| Binding Energy: | 1810.295896 | ± | 0.002751 | MeV |
| β- Decay Energy: | -3.940000 | ± | 0.150000 | 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: 0+
- Half life: 27 days ( 2.3328×10+06 sec., λ = 2.97131×10-07 s-1)
- Mode of decay:
α to
(Q = 6.397 MeV)
Branch ratio: >99.50 %
- Mode of decay: E.C. to
(Q = 0.215 MeV)
Branch ratio: <0.50 %
- Mode of decay: SF
Branch ratio: 3.9E-6 %
Meta state at 2.000 Mev
27 - Half life: 10 ps ( 1×10-11 sec., λ = 6.93147×10+10 s-1)
Meta state at 3.000 Mev
10 - Half life: 55 ns ( 5.5×10+10 sec., λ = 1.26027×10-11 s-1)
- Possible parent nuclides:
- E.C. from
- 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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