235 U decay; t1/2 = 703.8 My (t = 1.0154 Gy).

  1. 235U [a (+ g)] 231Th
g + c.e.(a) a
E(b) I(c) (c) Ic.e. E(b) I(c)
388.0 1.6 10-5 3.4 10-7 4218 0.0025
346.0 1.7 10-5 4.5 10-7 "  
292.0 1.3 10-6 5.3 10-8 "  
202.0 4.4 10-4 0.0012 "  
183.0 1.8 10-4 6.2 10-4 "  
151.0 3.3 10-5 2.0 10-4 "  
115.0 3.1 10-5 1.1 10-5 4325 0.0019
72.7 3.6 10-5 0.0019 "  
41.4 1.3 10-5 7.0 10-4 "  
195.0 2.6 10-4 2.6 10-5 4365 0.0075
141.0 9.7 10-5 2.1 10-5 "  
74.8 2.6 10-5 6.9 10-6 "  
51.2 8.8 10-6 0.0024 "  
31.6 7.0 10-6 0.0048 "  
205.0 0.0022 2.0 10-4 4400 0.024
163.0 0.0022 3.4 10-4 "  
109.0 6.6 10-4 6.3 10-5 "  
19.6 2.7 10-6 0.027 "  
186.0 0.025 0.0029 4414 9.2 10-4
144.0 0.0048 0.0010 "  
96.1 3.8 10-5 5.3 10-4 4502 7.5 10-4
54.2 1.3 10-5 0.0011 "  
42.0 1.8 10-5 0.012 4556 0.0018
      4599 0.0022

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);
    13 a-decays  (and 25 associated gs) with yields < 0.1% omitted - full details here
  5. g and conversion electron intensities are totals from given level; part may be associated with different (lower energy) primaries
  6. 235U entry in KAERI nuclide chart