element
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Information about Americium-237:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 237.049971 | ± | 0.000056 | amu |
| Excess Mass (Δ): | 46.547445 | ± | 0.051910 | MeV |
| Binding Energy: | 1792.032487 | ± | 0.051911 | MeV |
| β- Decay Energy: | -2.720000 | ± | 0.213000 | 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: 5/2(-)
- Half life: 73.0 min ( 4380 sec., λ = 0.000158253 s-1)
- Mode of decay:
E.C. to
(Q = 1.730 MeV)
Branch ratio: 99.98 %
- Mode of decay:
α to
(Q = 6.250 MeV)
Branch ratio: 0.03 %
Meta state at 2.400 Mev
73.0 - Half life: 5 ns ( 5×10+09 sec., λ = 1.38629×10-10 s-1)
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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