159 Er
68 91
Half life: 36 m 1
Jp: 3/2-
Decay mode: e+b+
Sn (keV): 7.36E3 sy
Sp (keV): 5673 30
Prod. mode: Charged particle reaction
Literature cut-off date: 1-Mar-1994
Author(s): R.G. Helmer
ENSDF citation: NDS 72,83 (1994)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 2768.6 20

Gammas from 159Er (36 m 1)

Eg (keV) Ig (%) Decay mode
6.77 e+b+
16.8 1 e+b+
40.0 1 e+b+
40.0 1 0.000063 8 e+b+
68.6 1 0.107 13 e+b+
85.2 2 0.040 13 e+b+
89.10 5 0.31 3 e+b+
97.45 5 0.77 7 e+b+
104.2 1 0.07 2 e+b+
105.8 1 0.057 13 e+b+
106.9 0.40 7 e+b+
113.0 1 0.117 23 e+b+
123.5 1 0.09 4 e+b+
125.8 1 0.06 2 e+b+
129.75 7 0.117 23 e+b+
132.1 3 ~0.33 e+b+
165.5 <0.33 e+b+
165.9 3 5.0 5 e+b+
167.15 10 0.30 3 e+b+
175.45 10 0.10 3 e+b+
199.35 10 0.27 7 e+b+
205.92 5 9.7 10 e+b+
211.48 10 1.17 23 e+b+
218.4 1 ~0.9 e+b+
224.8 4 0.3 1 e+b+
237.8 3 0.3 1 e+b+
250.9 1 0.67 20 e+b+
252.3 3 ~3.3 e+b+
307.7 3 0.33 7 e+b+
314.6 1 1.17 23 e+b+
321.6 2 0.5 1 e+b+
325.9 2 0.23 7 e+b+
344.2 2 0.17 7 e+b+
366.2 2 0.22 7 e+b+
370.0 0.15 4 e+b+
373.6 3 e+b+
375.0 2 0.13 3 e+b+
390.6 2 0.43 10 e+b+
418.2 3 0.18 5 e+b+
434.8 3 0.20 7 e+b+
436.4 0.25 7 e+b+
437.3 3 0.25 7 e+b+
441.3 3 0.13 3 e+b+
461.9 3 0.20 7 e+b+
483.3 3 0.15 5 e+b+
499.9 2 0.30 7 e+b+
505.4 1 1.8 4 e+b+
551.7 2 2.3 5 e+b+
562.6 3 0.33 10 e+b+
565.3 4 0.20 7 e+b+
581.0 1 4.0 4 e+b+
585.5 3 0.47 7 e+b+
592.0 3 0.23 7 e+b+
599.5 3 0.27 8 e+b+
610.2 3 0.20 6 e+b+
613.8 3 0.16 5 e+b+
624.5 1 33 3 e+b+
635.3 4 0.33 10 e+b+
649.1 3 23.4 23 e+b+
668.0 0.24 7 e+b+
674.5 4 0.10 3 e+b+
679.2 4 0.17 7 e+b+
697.7 5 0.10 3 e+b+
758.8 3 0.20 7 e+b+
774.2 3 0.18 6 e+b+
779.8 3 0.30 7 e+b+
783.5 5 0.13 7 e+b+
796.4 3 0.30 7 e+b+
800.4 5 0.10 3 e+b+
809.3 5 0.3 1 e+b+
811.8 5 0.07 3 e+b+
817.6 3 0.26 8 e+b+
819.7 4 0.20 7 e+b+
844.0 4 0.70 13 e+b+
851.5 7 0.77 17 e+b+
857.3 5 0.23 7 e+b+
880.0 10 0.30 13 e+b+
888.1 5 0.5 1 e+b+
910.3 5 0.23 7 e+b+
919.2 5 0.11 3 e+b+
932.6 5 0.37 10 e+b+
942.5 4 1.07 20 e+b+
947.3 0.15 e+b+
964.9 5 0.3 1 e+b+
973.0 6 0.15 4 e+b+
988.5 6 0.20 6 e+b+
1046.0 6 0.19 6 e+b+
1052.0 0.11 e+b+
1078.8 8 0.10 3 e+b+
1086.4 6 0.09 3 e+b+
1103.4 6 0.23 7 e+b+
1110.1 0.16 e+b+
1120.2 5 0.14 4 e+b+
1125.2 6 0.11 3 e+b+
1139.2 6 0.20 6 e+b+
1152.4 0.20 e+b+
1186.2 6 0.28 8 e+b+
1189.5 6 0.21 6 e+b+
1198.8 5 0.84 17 e+b+
1210.4 6 0.43 10 e+b+
1219.8 0.21 6 e+b+
1224.5 0.15 e+b+
1226.1 3 0.29 9 e+b+
1230.4 8 0.37 7 e+b+
1232.4 3 0.53 10 e+b+
1239.9 6 0.60 13 e+b+
1255.7 7 0.18 5 e+b+
1255.7 7 0.18 5 e+b+
1261.4 8 0.17 7 e+b+
1281.2 7 0.17 7 e+b+
1285.2 7 0.19 6 e+b+
1292.5 7 0.21 6 e+b+
1295.4 0.12 3 e+b+
1316.2 0.15 5 e+b+
1329.5 7 0.29 9 e+b+
1334.3 7 0.26 8 e+b+
1338.5 8 0.17 7 e+b+
1355.3 6 0.97 20 e+b+
1366.0 8 0.13 7 e+b+
1392.7 7 0.57 10 e+b+
1402.7 7 0.29 9 e+b+
1408.6 7 0.37 7 e+b+
1419.2 7 0.16 5 e+b+
1427.2 6 0.77 17 e+b+
1442.6 8 0.17 5 e+b+
1445.8 8 0.21 6 e+b+
1459.0 8 0.33 10 e+b+
1467.6 8 0.26 8 e+b+
1477.5 8 0.19 6 e+b+
1496.0 7 0.13 4 e+b+
1522.8 7 0.15 4 e+b+
1552.4 7 0.94 20 e+b+
1557.9 8 0.47 10 e+b+
1566.3 8 0.27 8 e+b+
1593.7 8 0.14 4 e+b+
1598.3 8 0.26 8 e+b+
1617.2 8 0.13 4 e+b+
1630.2 7 0.33 7 e+b+
1653.6 8 0.12 4 e+b+
1658.9 8 0.17 5 e+b+
1678.8 7 0.073 23 e+b+
1680.0 3 0.15 4 e+b+
1685.0 7 0.13 4 e+b+
1708.8 8 0.13 4 e+b+
1749.5 8 0.12 4 e+b+
1775.8 8 0.24 7 e+b+
1786.4 8 0.17 5 e+b+
1791.1 8 0.12 4 e+b+
1838.3 7 1.24 23 e+b+
1891.0 7 1.04 20 e+b+
1906.0 8 0.13 4 e+b+
1928.0 8 0.17 7 e+b+
2001.6 7 0.97 20 e+b+
2006.0 8 0.5 1 e+b+
2037.5 8 0.21 6 e+b+
2091.2 8 0.29 9 e+b+
2203.9 8 0.17 7 e+b+
2429.0 10 0.3 1 e+b+

X-rays from 159Er (36 m 1)

E (keV) I (%) Assignment
5,943 0.103 11 Ho Ll
6,680 0.267 21 Ho La2
6,720 2.40 19 Ho La1
6,790 0.042 4 Ho Lh
7,471 0.109 17 Ho Lb4
7,526 1.90 18 Ho Lb1
7,635 0.0259 20 Ho Lb6
7,653 0.17 3 Ho Lb3
7,910 0.49 4 Ho Lb2
8,757 0.33 3 Ho Lg1
9,051 0.034 6 Ho Lg2
9,088 0.050 8 Ho Lg3
46,223 0.00242 12 Ho Ka3
46,700 5.9 3 Ho Ka2
47,547 10.5 5 Ho Ka1
53,695 1.08 5 Ho Kb3
53,876 2.10 9 Ho Kb1
54,246 0.0381 21 Ho Kb5
55,293 0.70 3 Ho Kb2
55,457 0.220 12 Ho Kb4

Betas from 159Er (36 m 1)

>Eb endpoint (keV) Ib (%) Decay mode
677,5 1.5 3 e
766,8 1.1 2 e
867 0.37 7 e
877,5 1.2 2 e
989 2.5 4 e
1079,3 0.64 12 e
1088,6 1.1 2 e
1210,3 1.04 15 e
1272,9 0.42 10 e
1275,6 0.75 15 e
1299,9 1.2 2 e
1370,2 0.79 14 e
1413,2 0.21 7 e
1953,6 1.1 2 e
2097,36 1.7 5 e
2119,46 26 3 e
2144,09 33 4 e
2187,8 2.5 5 e
2248,12 1.4 3 e
2456,3 1.0 5 e
2555,92 9 e
2562,69 9 e