151m Er
68 83
Half life: 0.58 s 2
Jp: (27/2-)
Decay mode: IT, e+b+
Ex(keV): 2585.5 6
Sn (keV): 8.4E3 sy
Sp (keV): 3.5E3 sy
E(level): 2585.5 6 keV
Literature cut-off date: 15-Jan-1997
Author(s): B. Singh
ENSDF citation: NDS 80, 263 (1997)

Decay properties

Mode Branching (%) Q-value (keV)
IT 95.3 3
e+b+ 4.7 3 5.4E3 sy

Gammas from 151mEr (0.58 s 2)

Eg (keV) Ig (%) Decay mode
57.7 5 0.07 IT
128.8 1 0.39 13 e+b+
288.7 2 86 3 IT
297.2 1 3.7 3 e+b+
307.3 2 0.62 20 e+b+
338.5 2 0.91 20 IT
404.1 3 0.68 15 e+b+
414.1 1 2.7 3 e+b+
597.6 1 4.4 4 e+b+
789.5 1 5.1 4 e+b+
801.6 2 ~1.2 IT
1098.9 2 91.8 15 IT
1140.2 2 93.5 16 IT

X-rays from 151mEr (0.58 s 2)

E (keV) I (%) Assignment
5,943 0.0028 9 Ho Ll
6,151 0.28 4 Er Ll
6,680 0.0073 21 Ho La2
6,720 0.066 19 Ho La1
6,790 0.0010 3 Ho Lh
6,905 0.71 9 Er La2
6,949 6.4 8 Er La1
7,058 0.135 15 Er Lh
7,471 0.0032 9 Ho Lb4
7,526 0.047 15 Ho Lb1
7,635 0.00071 21 Ho Lb6
7,653 0.0050 15 Ho Lb3
7,745 0.049 25 Er Lb4
7,811 6.3 7 Er Lb1
7,909 0.072 9 Er Lb6
7,910 0.013 4 Ho Lb2
7,939 0.08 4 Er Lb3
8,186 1.28 16 Er Lb2
8,757 0.008 3 Ho Lg1
9,051 0.0010 3 Ho Lg2
9,088 0.0014 4 Ho Lg3
9,088 1.11 13 Er Lg1
9,385 0.015 8 Er Lg2
9,431 0.023 12 Er Lg3
46,223 8.2E-05 18 Ho Ka3
46,700 0.20 4 Ho Ka2
47,547 0.36 8 Ho Ka1
47,734 0.0009 6 Er Ka3
48,221 2.0 13 Er Ka2
49,128 3.5 23 Er Ka1
53,695 0.037 8 Ho Kb3
53,876 0.071 16 Ho Kb1
54,246 0.0013 3 Ho Kb5
55,293 0.024 5 Ho Kb2
55,457 0.0075 17 Ho Kb4
55,480 0.37 24 Er Kb3
55,674 0.7 5 Er Kb1
56,054 0.013 9 Er Kb5
57,142 0.24 16 Er Kb2
57,313 0.07 5 Er Kb4

Betas from 151mEr (0.58 s 2)

>Eb endpoint (keV) Ib (%) Decay mode
4736,3 0.006 b+
4865,1 0.022 b+
5758,3 0.002 e
5887,1 0.005 e