90-Th-231  basic  XS graphs  element

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 Decay energy: 0.389 MeV 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)