223 Ra decay; t1/2 = 11.43 d (t = 16.49 d).

  1. 223Ra [a (+ g)] 219Rn
g + c.e.(a) a
E(b) I(c) (c) Ic.e. E(b) I(c)
? ? ? 5014 2.0 10-7
? ? ? 5026 2.8 10-7
? ? ? 5036 1.8 10-7
236.0 8.8 10-8 5.4 10-9 5056 8.8 10-8
? ? ? 5086 1.3 10-7
376.0 2.6 10-7 5.5 10-9 5112 2.6 10-7
370.0 7.5 10-7 2.4 10-8 5135 7.5 10-7
391.0 1.3 10-6 2.1 10-8 5152 9.2 10-6
219.0 6.2 10-6 4.5 10-7 "  
193.0 1.8 10-6 1.7 10-7 "  
711.0 1.5 10-6 8.6 10-9 5173 1.1 10-5
373.0 6.2 10-6 1.3 10-7 "  
369.0 3.5 10-6 7.4 10-8 "  
294.0 2.4 10-6 8.6 10-8 5212 2.4 10-6
632.0 9.7 10-6 6.8 10-8 5236 1.8 10-5
488.0 4.4 10-6 5.3 10-8 "  
199.0 1.3 10-6 1.2 10-7 "  
131.0 2.2 10-6 6.4 10-7 "  
609.0 2.8 10-5 2.1 10-7 5259 1.9 10-5
245.0 4.0 10-6 2.2 10-7 "  
599.0 4.0 10-5 3.1 10-7 5283 4.2 10-5
260.0 2.6 10-6 1.3 10-7 "  
221.0 1.5 10-5 1.0 10-6 "  
580.0 4.4 10-5 3.7 10-7 5287 6.6 10-5
256.0 2.2 10-6 1.1 10-7 "  
251.0 1.5 10-5 7.9 10-7 "  
527.0 3.1 10-5 3.1 10-7 5339 5.7 10-5
383.0 1.8 10-6 3.5 10-8 "  
166.0 2.2 10-6 3.3 10-7 "  
388.0 6.2 10-6 1.2 10-7 5366 5.7 10-5
177.0 1.8 10-6 2.3 10-7 "  
433.0 1.5 10-5 2.2 10-7 5433 1.2 10-4
288.0 6.8 10-5 2.5 10-6 "  
177.0 2.1 10-5 2.7 10-6 "  
104.0 7.5 10-6 3.4 10-6 "  
445.0 5.6 10-4 1.2 10-4 5435 8.8 10-4
430.0 8.4 10-6 1.3 10-7 "  
176.0 7.5 10-6 9.7 10-7 "  
107.0 9.7 10-6 1.1 10-4 "  
393.0 3.8 10-6 7.2 10-8 5481 3.5 10-6
374.0 8.4 10-6 1.8 10-7 5500 (fed)(d)
252.0 1.4 10-5 6.8 10-7 "  
376.0 4.8 10-6 1.0 10-7 5502 4.4 10-4
372.0 2.2 10-4 7.5 10-5 "  
361.0 1.9 10-5 4.2 10-7 "  
249.0 1.6 10-5 8.5 10-7 "  
33.6 1.5 10-5 2.9 10-5 "  
343.0 8.8 10-5 1.4 10-5 5535 (fed)(d)
328.0 8.7 10-5 3.3 10-6 "  
338.0 0.0012 5.6 10-4 5540 0.0040
334.0 4.4 10-5 5.8 10-6 "  
324.0 0.0017 8.5 10-4 "  
180.0 6.7 10-5 1.4 10-4 "  
269.0 0.0060 0.0050 5607 0.011
255.0 1.4 10-5 6.9 10-7 "  
111.0 2.1 10-5 1.2 10-4 "  
159.0 3.0 10-4 0.0011 5716 0.023
154.0 0.0025 0.0099 "  
144.0 0.0014 0.0069 "  
31.6 4.4 10-8 9.4 10-5 "  
122.0 5.2 10-4 0.0040 5747 0.0042
14.4 1.3 10-5 0.0067 5858 1.4 10-4
10.0 3.5 10-6 0.0045 "  
4.4 1.9 10-6 0.022 5865 8.8 10-6
      5872 3.7 10-4

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)
    Levels marked `(fed)' receive no direct a-decay, but are fed by gs from higher levels
  5. g and conversion electron intensities are totals from given level; part may be associated with different (lower energy) primaries
  6. 223Ra entry in KAERI nuclide chart