148 Er
68 80
Half life: 4.6 s 2
Jp: 0+
Decay mode: e+b+, ep
Sn (keV): 1.26E4 sy
Sp (keV): 3.0E3 sy
Literature cut-off date: 31-Jul-1989
Author(s): L.K. Peker
ENSDF citation: NDS 59,393 (1990)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 6.7E3 sy
ep ~0.15

Gammas from 148Er (4.6 s 2)

Eg (keV) Ig (%) Decay mode
12.5 0.3* ep
21.5 3.3 4* ep
58.0 33 3* ep
81.9 1 20 1* ep
92.3 3 1.0 3* ep
141.7 1 4.26 21 e+b+
151.2 3 2.5 5* ep
197.1 71 3* ep
218.6 1 5.5 5* ep
243.4 3 5 1* ep
244.0 1 7.1 4 e+b+
244.1 2 7.6 7* ep
244.3 2 16 3* ep
255.2 19 1* ep
256.9 1 65 3* ep
268.7 5 e+b+
287.6 4 2.1 4 e+b+
315.3 1 6.9 5 e+b+
383 1 1.7 5 e+b+
387.7 1 88 3* ep
609.5 3 5.8 4 e+b+
632.1 1 35 2* ep
677.2 2 8.5 7* ep
924.9 4 2.3 5 e+b+
1027.3 4 2.0 5 e+b+
1311.8 3 8.9 8 e+b+
1653.4 100 4* ep
1711.5 32 2* ep
2121.8 5 1.1 4 e+b+

X-rays from 148Er (4.6 s 2)

E (keV) I (%) Assignment
5,943 0.045 5 Ho Ll
6,680 0.117 10 Ho La2
6,720 1.06 9 Ho La1
6,790 0.0152 15 Ho Lh
7,471 0.062 10 Ho Lb4
7,526 0.69 7 Ho Lb1
7,635 0.0114 10 Ho Lb6
7,653 0.100 16 Ho Lb3
7,910 0.214 19 Ho Lb2
8,757 0.121 12 Ho Lg1
9,051 0.020 3 Ho Lg2
9,088 0.028 5 Ho Lg3
46,223 0.00146 10 Ho Ka3
46,700 3.57 24 Ho Ka2
47,547 6.4 4 Ho Ka1
53,695 0.66 4 Ho Kb3
53,876 1.27 9 Ho Kb1
54,246 0.0231 17 Ho Kb5
55,293 0.43 3 Ho Kb2
55,457 0.133 10 Ho Kb4

Betas from 148Er (4.6 s 2)

>Eb endpoint (keV) Ib (%) Decay mode
3700 0.15 e
5362,7 5 b+
5434 6 b+
5678 62 b+
6384,7 0.8 e
6456 0.9 e
6700 8 e