90-Th-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

• Spin: 5/2+
• Half life: 25.52 H ( 0.0392 % )
• Mode of decay: Alpha to Ra-227
  • Branch ratio: ~ 1.0E-8
  • Decay energy: 4.213 MeV
• Mode of decay: Beta to Pa-231
  • Decay energy: 0.389 MeV

• Possible parent nuclides:

  Beta from Ac-231

  Alpha from U-235

Element Th