Evaluation made within an IAEA Coordinated Reserch Project  — For atomic radiation data, please refer to the pdf files linked below

Parent  Energy [keV]  Half-life  Jπ  Decay  Q [keV]  Daughter 209 81 Tl   128 0.0 2.161 min 7 1/2+ β- 3976.0 8.0 209 82 Pb   127

Evaluation: F.G. Kondev Publication cut-off: 30-MAY-2011 ENSDF   Summary

General Comments

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Beta -    <Eβ-> [keV]   Iβ-(abs) [%]  Daughter level [keV]  Jπ  Eβ-, max [keV]  logft  Transition type 177.8 28 0.420 22 3388.96 13 (1/2,3/2)+ 587 8     187.4 28 0.10 3 3361.36 17 (1/2,3/2)+ 615 8     292.9 30 0.645 16 3069.72 13 3/2- 906 8 6.3 1st unique 355.5 31 0.70 9 2905.14 25 3/2- 1071 8 6.5 1st unique 505.9 33 0.070 15 2524.79 21 (1/2,3/2)+ 1451 8 8   518.1 31 0.031 16 2460.8 3 (5/2)- 1515 8 9.2 1st unique 591.2 33 0.32 11 2315.68 13 (3/2)- 1660 8 7.5 1st unique 660.0 34 97.70 15 2149.29 6 1/2- 1827 8 5.2   709.0 34 0.1 2032.07 6 1/2+ 1944 8 8.3   Gamma    Eγ [keV]  Iγ-(abs) [%]  Initial level [keV]  Jπ  Final level [keV]  Jπ  Mult.  δ  αT  ITot [%] 117.224 7 77.22 27 2149.29 6 1/2- 2032.07   E1   0.295 5   284.04 23 0.14 7 2315.68 13 (3/2)- 2032.07   [M1]   0.495 7   311.50 30 0.028 14 2460.8 3 (5/2)- 2149.29   [E2]   0.1034 15   375.50 20 0.070 15 2524.79 21 (1/2,3/2)+ 2149.29           465.128 24 96.62 5 2032.07 6 1/2+ 1566.94   E2   0.0350 5   469.7 3 0.12 3                 582.4 2 0.312 24 2149.29 6 1/2- 1566.94   [M2]   0.200 3   748.30 20 0.080 21 2315.68 13 (3/2)- 1566.94   [E1]   0.00428 6   755.60 30 0.11 2 2905.14 25 3/2- 2149.29   [M1]   0.0366 6   860.5 3 0.26 4                 873.50 40 0.59 8 2905.14 25 3/2- 2032.07   [E1]   0.00320 5   890.0 4 0.12 3                 902.8 4 0.10 2                 920.43 11 0.631 15 3069.72 13 3/2- 2149.29   [M1]   0.0220 3   970.3 0.054 15                 1239.66 11 0.420 22 3388.96 13 (1/2,3/2)+ 2149.29           1329.29 16 0.10 3 3361.36 17 (1/2,3/2)+ 2032.07           1566.93 5 99.707 5 1566.94 5 5/2+ 0   E2   0.00294 5   1661.1 5 0.10 2                 1673.2 4 0.48 4                 1781.7 5 0.04 2                 2005.3 2 0.020 5                 2032.1 5 0.001                 2149 1 0.015 5 2149.29 6 1/2- 0   [M4]   0.01529 22   2315.80 21 0.0288 21 2315.68 13 (3/2)- 0   [E3]   0.00292 4   2548.2 0.015 6

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