element
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Information about Thorium-231:
 |  |  | | | Wikipedia | Neutron Cross Sections | X-Ray Transitions | X-Ray Attenuation |
Mass-Energy Data:
| Atomic Mass: | 231.036297 | ± | 0.000002 | amu |
| Excess Mass (Δ): | 33.810488 | ± | 0.002023 | MeV |
| Binding Energy: | 1760.253274 | ± | 0.002047 | MeV |
| β- Decay Energy: | 0.389515 | ± | 0.001685 | 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: 25.52 h ( 91872 sec., λ = 7.54471×10-06 s-1)
- Mode of decay:
β- to
(Q = 0.389 MeV)
- Mode of decay: α to
(Q = 4.213 MeV)
Branch ratio: ~1.0E-8 %
- Possible parent nuclides:
- β- 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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