150 Eu
63 87
Half life: 36.9 y 9
Jp: 5(-)
Decay mode: e+b+
Sn (keV): 6420 7
Sp (keV): 4943 7
Prod. mode: Charged particle reaction
Fast neutron activation
Literature cut-off date: 1-Mar-1995
Author(s): E. derMateosian and J.K. Tuli
ENSDF citation: NDS 75,827 (1995)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 2261 7

Gammas from 150Eu (36.9 y 9)

Eg (keV) Ig (%) Decay mode
78.76 1 0.083 8 e+b+
125 0.0019 10 e+b+
135.05 17 0.012 3 e+b+
205.21 2 0.030 4 e+b+
251.596 25 0.173 9 e+b+
272.82 3 0.015 6 e+b+
272.82 3 0.023 8 e+b+
285.00 3 0.167 8 e+b+
286.293 15 0.06 4 e+b+
286.293 15 0.07 4 e+b+
286.293 15 0.099 14 e+b+
298.061 14 0.644 15 e+b+
305.68 3 0.034 6 e+b+
310.73 4 0.030 6 e+b+
315.0 2 0.017 6 e+b+
333.971 12 96 e+b+
335.7 1 0.036 14 e+b+
340.38 4 0.156 14 e+b+
342.56 4 0.170 14 e+b+
345.955 19 0.398 14 e+b+
370.72 3 0.028 18 e+b+
370.721 25 0.080 16 e+b+
372.728 25 0.239 9 e+b+
377.73 3 0.113 8 e+b+
377.73 3 0.113 8 e+b+
381.99 3 0.112 8 e+b+
402.152 12 0.780 8 e+b+
402.97 5 0.240 10 e+b+
406.52 5 0.140 14 e+b+
420.55 22 0.013 6 e+b+
439.401 15 80.4 16 e+b+
448.789 12 0.259 10 e+b+
453.40 6 0.026 5 e+b+
458.36 6 0.044 5 e+b+
461.761 15 0.826 19 e+b+
464.11 7 0.08 8 e+b+
464.11 7 0.38 8 e+b+
474.498 25 0.145 7 e+b+
476.89 13 0.018 5 e+b+
485.931 20 0.165 7 e+b+
505.521 25 4.80 10 e+b+
510.07 2 0.125 10 e+b+
510.07 3 0.125 10 e+b+
515.65 8 0.989 19 e+b+
520.085 19 0.461 10 e+b+
540.55 6 0.086 7 e+b+
542.972 25 0.134 7 e+b+
553.20 10 0.033 7 e+b+
571.259 15 0.413 10 e+b+
575.51 8 0.031 8 e+b+
584.274 12 52.6 14 e+b+
590.85 10 0.032 5 e+b+
596.53 4 0.021 12 e+b+
596.53 4 0.053 10 e+b+
607.32 3 0.167 5 e+b+
612.69 3 0.093 6 e+b+
612.69 3 0.093 6 e+b+
612.69 3 0.093 6 e+b+
615.16 4 0.081 4 e+b+
625.568 20 0.310 7 e+b+
637.826 24 0.014 7 e+b+
658.28 6 0.053 5 e+b+
662.66 15 0.015 4 e+b+
667.050 25 0.259 10 e+b+
667.050 25 <0.26 e+b+
675.86 3 0.509 10 e+b+
676.81 <0.019 e+b+
699.5 3 0.006 4 e+b+
712.205 15 1.08 3 e+b+
731.220 24 0.336 10 e+b+
737.455 15 9.60 19 e+b+
740.6 1 e+b+
741.467 17 0.854 10 e+b+
748.057 12 5.18 10 e+b+
749.80 3 0.672 10 e+b+
751.068 14 2.14 5 e+b+
756.51 3 0.113 7 e+b+
759.57 9 0.077 7 e+b+
762.03 9 0.028 5 e+b+
773.283 15 0.605 10 e+b+
777 0.007 3 e+b+
788 0.004 3 e+b+
816.44 8 0.049 5 e+b+
828.562 14 0.586 19 e+b+
830.816 21 0.532 12 e+b+
831.92 25 0.067 19 e+b+
836.58 3 0.307 10 e+b+
838.40 8 0.058 10 e+b+
859.867 18 0.586 10 e+b+
869.256 14 1.853 19 e+b+
899.071 15 0.941 10 e+b+
910.88 4 0.086 10 e+b+
915.28 12 0.016 7 e+b+
923.267 19 0.307 10 e+b+
923.267 19 0.307 10 e+b+
953.20 8 0.045 7 e+b+
978.47 5 0.020 5 e+b+
1045.873 12 0.088 12 e+b+
1045.873 12 0.91 7 e+b+
1049.043 25 5.38 19 e+b+
1071.002 25 0.144 10 e+b+
1081.46 8 0.029 10 e+b+
1083.34 3 0.163 10 e+b+
1115.4 3 0.015 6 e+b+
1122.855 15 0.336 10 e+b+
1165.74 3 0.106 10 e+b+
1170.587 24 1.334 19 e+b+
1193.826 24 0.80 3 e+b+
1197.108 24 1.13 4 e+b+
1209.46 19 0.0034 16 e+b+
1246.968 24 1.91 5 e+b+
1251.25 3 0.163 10 e+b+
1261.98 3 0.461 10 e+b+
1308.675 23 0.893 19 e+b+
1321.91 3 0.173 10 e+b+
1334.060 25 0.413 10 e+b+
1343.777 22 2.59 7 e+b+
1346.40 7 0.029 7 e+b+
1350.29 3 0.173 10 e+b+
1379.12 6 0.039 5 e+b+
1379.13 6 0.039 5 e+b+
1417 0.00024 14 e+b+
1420 0.007 3 e+b+
1485.49 3 1.90 8 e+b+
1499.35 10 0.0394 19 e+b+
1636.53 3 0.720 10 e+b+
1690.668 17 0.15 5 e+b+
1710 0.00058 19 e+b+
1736.40 8 0.00019 10 e+b+
1783.19 5 0.103 3 e+b+
1818.52 8 0.0038 5 e+b+
1833.30 15 0.0026 5 e+b+

X-rays from 150Eu (36.9 y 9)

E (keV) I (%) Assignment
4,993 0.212 21 Sm Ll
5,589 0.079 6 Sm Lh
5,610 0.57 4 Sm La2
5,636 5.1 3 Sm La1
6,196 0.33 5 Sm Lb4
6,206 3.22 24 Sm Lb1
6,317 0.55 9 Sm Lb3
6,371 0.047 3 Sm Lb6
6,587 1.08 7 Sm Lb2
7,183 0.53 4 Sm Lg1
7,471 0.102 17 Sm Lg2
7,489 0.146 24 Sm Lg3
39,097 0.00548 20 Sm Ka3
39,522 21.6 6 Sm Ka2
40,118 39.1 11 Sm Ka1
45,294 3.82 11 Sm Kb3
45,414 7.40 21 Sm Kb1
45,741 0.110 5 Sm Kb5
46,578 2.44 7 Sm Kb2
46,705 0.92 4 Sm Kb4

Betas from 150Eu (36.9 y 9)

>Eb endpoint (keV) Ib (%) Decay mode
66,89 0.81 2 e
108,3 0.05 5 e
143,9 3.4 13 e
153,7 1.92 3 e
165,77 0.32 2 e
225,78 0.60 1 e
236,47 1.99 3 e
240,75 4.0 1 e
290,67 3.0 1 e
439,28 0.76 6 e
441,67 10 1 e
618,48 3.4 1 e
756,55 0.16 4 e
812,01 0.46 2 e
903,47 52 1 e
982,25 2.8 1 e
1487,76 8 3 e