90-Th-231
basic
XS graphs
element
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90-thorium-231
- Atomic Mass: 231.0362971 +- 0.0000022 amu
- Excess Mass: 33810.488 +- 2.023 keV
- Binding Energy: 1760253.274 +- 2.047 keV
- Beta Decay Energy: B- 389.515 +- 1.685 keV
"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.
- Spin: 5/2+
- Half life: 25.52 h
- Mode of decay: Beta to Pa-231
- Mode of decay: Alpha to Ra-227
- Branch ratio: ~1.0E-8 %
- Decay energy: 4.213 MeV
- Possible parent nuclides:
- Beta from Ac-231
- Alpha from U-235
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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