211 Pb decay; t1/2 = 36.1 m (t = 52.1 m).

  1. 211Pb [b (+ g)] 211Bi
g + c.e.(a) b
E(b) I(c) (c) Ic.e. E(b) I(c)
1271.0 3.9 × 10-6 6.7 × 10-9 102.0 1.4 × 10-5
866.0 2.8 × 10-6 9.6 × 10-9 "  
503.0 6.6 × 10-6 6.5 × 10-8 "  
1234.0 5.7 × 10-7 1.0 × 10-9 139.0 5.7 × 10-7
1197.0 5.7 × 10-6 1.1 × 10-8 176.0 8.4 × 10-6
430.0 2.8 × 10-6 3.9 × 10-8 "  
1110.0 6.5 × 10-5 1.4 × 10-7 264.0 3.9 × 10-4
704.0 2.1 × 10-4 8.3 × 10-6 "  
343.0 1.5 × 10-5 3.1 × 10-6 "  
95.0 7.9 × 10-6 7.6 × 10-5 "  
1103.0 2.2 × 10-6 4.9 × 10-9 270.0 2.2 × 10-6
1080.0 6.7 × 10-6 1.5 × 10-8 293.0 2.7 × 10-5
675.0 2.8 × 10-6 1.5 × 10-8 "  
314.0 1.4 × 10-5 3.7 × 10-6 "  
1015.0 7.9 × 10-6 2.0 × 10-8 359.0 (fed)(d)
610.0 1.0 × 10-5 6.8 × 10-8 "  
951.0 9.7 × 10-6 2.7 × 10-8 422.0 9.7 × 10-6
832.0 0.0017 5.5 × 10-5 541.0 0.0029
427.0 7.6 × 10-4 1.4 × 10-4 "  
65.5 3.4 × 10-5 2.3 × 10-4 "  
766.0 3.1 × 10-4 1.1 × 10-5 607.0 4.4 × 10-5
405.0 0.0017 1.8 × 10-4 968.0 7.3 × 10-4
      1373 0.040

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 b-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. 211Pb entry in KAERI nuclide chart