Basic Info
n-XS summary
element
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Information about Plutonium-238:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Plutonium-238 has safely powered at least 20 NASA spacecraft since 1972.
Mass-Energy Data:
| Atomic Mass: | 238.049553 | ± | 0.000002 | amu |
| Excess Mass (Δ): | 46.158688 | ± | 0.001982 | MeV |
| Binding Energy: | 1801.274921 | ± | 0.002008 | MeV |
| β- Decay Energy: | -2.258350 | ± | 0.050688 | 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: 87.7 years ( 2.76606×10+09 sec., λ = 2.5059×10-10 s-1)
- Mode of decay:
α to
(Q = 5.593 MeV)
- Mode of decay: SF
Branch ratio: 1.9E-7 %
Meta state at 2.400 Mev
87.7 - Half life: 0.6 ns ( 6×10+08 sec., λ = 1.15525×10-09 s-1)
- Mode of decay: SF
(Q = 0 0.000 MeV)
Branch ratio: <=100.00 %
Meta state at 3.500 Mev
- Spin: (0+)
0.6
- Half life: 6.0 ns ( 6×10+09 sec., λ = 1.15525×10-10 s-1)
- Mode of decay: SF
(Q = 0 0.000 MeV)
Branch ratio: <=100.00 %
- Possible parent nuclides:
- β- from
- 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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