214 Bi decay; t1/2 = 19.9 m (t = 28.7 m).

  1. 214Bi [b (+ g)] 214Po   (99.979%)
  2. 214Bi [a (+ g)] 210Tl   (0.021%;   t1/2 = 65.8 d)
g + c.e.(a) a b
E(b) I(c) (c) Ic.e. E(b) I(c) E(b) I(c)
2448.0 0.014 8.8 10-6     827.0 0.026
1838.0 0.0038 3.7 10-6     "  
1173.0 4.8 10-4 2.6 10-6     "  
1070.0 0.0027 6.5 10-6     "  
1032.0 6.9 10-4 1.8 10-6     "  
904.0 8.5 10-4 2.8 10-6     "  
786.0 0.0029 1.2 10-5     "  
705.0 4.0 10-4 9.6 10-6     "  
683.0 7.9 10-4 4.4 10-6     "  
2204.0 0.046 1.5 10-4     1070 0.053
1595.0 0.0030 3.6 10-6     "  
826.0 8.6 10-4 3.1 10-5     "  
789.0 1.1 10-4 4.6 10-6     "  
661.0 4.0 10-4 1.6 10-5     "  
543.0 8.6 10-4 6.0 10-5     "  
474.0 9.6 10-4 9.6 10-5     "  
461.0 3.8 10-4 5.0 10-7     "  
2119.0 0.011 3.8 10-5     1156 0.040
1509.0 0.020 1.4 10-4     "  
742.0 3.8 10-4 1.8 10-6     "  
703.0 0.0035 1.9 10-4     "  
389.0 0.0035 9.2 10-4     "  
2017.0   5.5 10-5     1257 0.028
1408.0 0.027 1.0 10-4     "  
639.0 3.2 10-4 5.8 10-6     "  
356.0 6.7 10-5 5.2 10-6     "  
253.0 2.9 10-5 2.4 10-5     "  
1847.0 0.020 1.9 10-5     1427 0.079
1238.0 0.056 7.1 10-4     "  
832.0 2.7 10-4 1.0 10-6     "  
573.0 6.9 10-4 5.4 10-6     "  
470.0 0.0013 1.3 10-4     "  
304.0 3.2 10-4 1.0 10-4     "  
1765.0 0.147 7.5 10-4     1510 0.162
1155.0 0.016 2.2 10-4     "  
387.0 0.0028 4.4 10-4     "  
349.0 7.6 10-4 2.7 10-4     "  
221.0 2.9 10-5 2.2 10-5     "  
1730.0 0.028 7.3 10-5     1545 0.167
1120.0 0.141 0.0023     "  
455.0 0.0027 3.4 10-5     "  
352.0 6.7 10-4 1.4 10-4     "  
1543.0 0.0032 4.1 10-6     1731 0.029
934.0 0.029 7.2 10-4     "  
528.0 3.8 10-5 3.6 10-7     "  
269.0 2.9 10-4 1.2 10-5     "  
1378.0 0.037 1.5 10-4     1897 0.069
768.0 0.046 7.4 10-4     "  
          3275 0.190
62.5 9.0 10-5 2.9 10-5 5450 1.1 10-4    
      5513 7.9 10-5    

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);
    49 b-decays and 2 other levels (and 176 associated gs) with yield < 2% omitted;
    4 a-decays (and 4 associated gs) with yield < 0.005% 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. 214Bi entry in KAERI nuclide chart