143 Eu
63 80
Half life: 2.63 m 5
Jp: 5/2+
Decay mode: e+b+
Sn (keV): 10971 33
Sp (keV): 2545 17
Prod. mode: Charged particle reaction
Literature cut-off date: 1-Jan-1991
Author(s): L.K. Peker
Update: 20-Sep-1996, B. Singh
ENSDF citation: NDS 64,429 (1991)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 5275 14

Gammas from 143Eu (2.63 m 5)

Eg (keV) Ig (%) Decay mode
107.69 1 2.09 23 e+b+
203.1 2 0.143 23 e+b+
429.6 2 0.114 15 e+b+
458.4 3 0.043 15 e+b+
551.4 3 0.060 15 e+b+
556.6 3 0.068 15 e+b+
607.6 2 0.263 15 e+b+
691.2 3 0.058 15 e+b+
733.1 3 0.063 15 e+b+
754.0 2 0.22 4 e+b+
798.1 4 0.075 23 e+b+
805.3 2 1.01 5 e+b+
999.6 2 0.548 23 e+b+
1107.3 2 8 e+b+
1163.3 3 0.028 8 e+b+
1272.2 3 0.060 11 e+b+
1369.1 2 0.90 3 e+b+
1429.3 2 0.353 23 e+b+
1458.4 2 1.16 5 e+b+
1536.8 2 3.29 9 e+b+
1566.1 2 0.600 23 e+b+
1578.5 3 0.035 8 e+b+
1607.3 2 1.01 5 e+b+
1668.8 2 0.097 15 e+b+
1680.9 3 0.024 6 e+b+
1715.2 2 0.173 23 e+b+
1779.1 4 0.026 11 e+b+
1804.9 2 1.67 9 e+b+
1912.7 2 2.13 11 e+b+
1955.3 3 0.060 19 e+b+
1962.6 2 0.233 15 e+b+
2001.6 5 0.029 11 e+b+
2070.3 2 0.51 3 e+b+
2102.5 2 0.95 5 e+b+
2131.5 3 0.036 5 e+b+
2167.3 3 0.053 5 e+b+
2228.0 3 0.41 5 e+b+
2270.8 3 0.120 15 e+b+
2280.0 3 0.026 5 e+b+
2303.0 3 0.034 5 e+b+
2312.4 3 0.022 3 e+b+
2323.6 3 0.035 5 e+b+
2410.7 4 0.017 3 e+b+
2450.6 3 0.035 5 e+b+
2479.9 3 0.085 8 e+b+
2557.9 3 0.034 5 e+b+
2571.1 3 0.017 4 e+b+
2578.2 4 0.011 5 e+b+
2587.4 3 0.048 5 e+b+
2646.8 3 0.023 4 e+b+
2685.8 3 0.040 5 e+b+
2708.9 4 0.017 3 e+b+
2842.1 6 0.011 3 e+b+
3031.2 6 0.014 3 e+b+
3154.0 6 0.011 3 e+b+
3342.9 7 0.0098 23 e+b+
4093.0 30 0.0053 15 e+b+

X-rays from 143Eu (2.63 m 5)

E (keV) I (%) Assignment
4,993 0.066 7 Sm Ll
5,589 0.0246 19 Sm Lh
5,610 0.177 12 Sm La2
5,636 1.60 11 Sm La1
6,196 0.093 14 Sm Lb4
6,206 1.00 8 Sm Lb1
6,317 0.155 24 Sm Lb3
6,371 0.0149 10 Sm Lb6
6,587 0.339 24 Sm Lb2
7,183 0.166 13 Sm Lg1
7,471 0.029 5 Sm Lg2
7,489 0.041 7 Sm Lg3
39,097 0.00174 7 Sm Ka3
39,522 6.88 24 Sm Ka2
40,118 12.5 4 Sm Ka1
45,294 1.22 4 Sm Kb3
45,414 2.36 8 Sm Kb1
45,741 0.0349 17 Sm Kb5
46,578 0.78 3 Sm Kb2
46,705 0.295 15 Sm Kb4

Betas from 143Eu (2.63 m 5)

>Eb endpoint (keV) Ib (%) Decay mode
928,3 0.0016 b+
1099 0.00044 b+
1221,8 0.0008 b+
1367,1 0.005 b+
1410,9 0.0011 b+
1567,1 0.012 b+
1665,5 0.021 b+
1694,9 0.012 b+
1842,3 0.011 b+
1950,3 0.08 e
1982,3 0.039 b+
2025 0.13 b+
2085,7 0.039 b+
2121 0.011 e
2150,5 0.32 b+
2182,7 0.24 b+
2243,8 0.013 e
2340,3 1.8 b+
2389,1 0.05 e
2432,9 0.010 e
2538 0.6 b+
2589,1 0.08 e
2594,3 0.028 b+
2686,9 0.9 b+
2687,5 0.11 e
2716,1 1.8 b+
2716,9 0.06 e
2864,3 0.039 e
2883,9 0.38 b+
2942,6 0.12 b+
3004,3 0.11 e
3047 0.33 e
3107,7 0.09 e
3145,7 3.9 b+
3172,5 0.7 e
3204,7 0.50 e
3362,3 3.0 e
3560 0.8 e
3616,3 0.032 e
3708,9 0.9 e
3738,1 1.9 e
3905,9 0.32 e
3964,6 0.10 e
4167,7 2.4 e
4253 62 b+
5275 16 e