238 U decay; t1/2 = 4.468 Gy (t = 6.446 Gy).

  1. 238U [a (+ g)] 234Th
g + c.e.(a) a
E(b) I(c) (c) Ic.e. E(b) I(c)
113.0 9.8 10-5 6.4 10-4 4040 7.5 10-4
49.6 5.6 10-4 0.184 4147 0.203
      4197 0.753

Notes:

  1. c.e.: conversion electrons
  2. Energies in keV
  3. Intensities per `parent' decay of natural U (i.e. 0.956 238U, 0.044 235U)
  4. Data from compilations and amendments in Nuclear Data Sheets to Vol. 64 (1991)
  5. g and conversion electron intensities are totals from given level; part may be associated with different (lower energy) primaries
  6. 238U entry in KAERI nuclide chart