158 Er
68 90
Half life: 2.29 h 6
Jp: 0+
Decay mode: e
Sn (keV): 9.97E3 sy
Sp (keV): 5.68E3 sy
Prod. mode: Charged particle reaction
Literature cut-off date: 1-Oct-1995
Author(s): R.G. Helmer
ENSDF citation: NDS 77,471 (1996)

Decay properties

Mode Branching (%) Q-value (keV)
e 100 9.0E2 sy

Gammas from 158Er (2.29 h 6)

Eg (keV) Ig (%) Decay mode
24.31 3 0.17 5 e
25.5 2 0.15 3 e
28.7 2 0.018 5 e
30.8 2 <0.027 e
43.5 1 0.56 16 e
45.5 2 2.9 10 e
50.6 1 0.12 3 e
67.20 1 0.208 9 e
70.0 1 0.054 18 e
71.91 1 9.99 13 e
93.7 2 0.24 5 e
115.33 2 0.180 18 e
118.63 6 0.162 18 e
162.5 5 0.06 3 e
190.2 5 0.05 3 e
195.43 1 1.64 7 e
200.2 3 <0.05 e
204.13 7 0.18 5 e
207.8 2 0.072 18 e
238.9 2 0.27 4 e
248.58 1 3.42 22 e
271.5 2 0.23 4 e
276.9 1 0.063 18 e
286.3 1 0.171 18 e
295.96 3 1.19 9 e
310.74 3 1.99 6 e
314.95 7 0.32 4 e
326.7 3 0.33 5 e
328.9 3 <0.05 e
336.1 1 0.126 18 e
341.58 6 1.08 18 e
358.21 3 2.3 3 e
386.84 4 9.0 4 e
472.6 2 0.85 4 e
515.9 1 1.04 18 e
588.2 2 0.13 5 e

X-rays from 158Er (2.29 h 6)

E (keV) I (%) Assignment
5,943 0.77 8 Ho Ll
6,680 2.00 14 Ho La2
6,720 18.0 13 Ho La1
6,790 0.311 25 Ho Lh
7,471 0.96 16 Ho Lb4
7,526 14.1 11 Ho Lb1
7,635 0.194 14 Ho Lb6
7,653 1.54 25 Ho Lb3
7,910 3.6 3 Ho Lb2
8,757 2.48 21 Ho Lg1
9,051 0.30 5 Ho Lg2
9,088 0.44 8 Ho Lg3
46,223 0.0161 6 Ho Ka3
46,700 39.2 10 Ho Ka2
47,547 69.7 19 Ho Ka1
53,695 7.20 19 Ho Kb3
53,876 13.9 4 Ho Kb1
54,246 0.253 11 Ho Kb5
55,293 4.67 12 Ho Kb2
55,457 1.46 6 Ho Kb4

Betas from 158Er (2.29 h 6)

>Eb endpoint (keV) Ib (%) Decay mode
245,01 2.2 2 e
445,95 10.5 4 e
466,6 2.3 2 e
474,59 2.3 3 e
509,7 0.09 2 e
513,91 3.8 2 e
522,07 4.8 2 e
666,96 3.0 5 e
760,89 72 3 e