149m Ho
67 82
Half life: 56 s 3
Jp: (1/2+)
Decay mode: e+b+
Ex(keV): 48.8 2
Sn (keV): 1.13E4 sy
Sp (keV): 1130 38
E(level): 48.8 2 keV
Literature cut-off date: 1-Dec-1994
Author(s): B. Singh
ENSDF citation: NDS 73,351 (1994)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 6014 19

Gammas from 149mHo (56 s 3)

Eg (keV) Ig (%) Decay mode
94.3 3 3.2 12 e+b+
166.1 2 2.7 5 e+b+
372.1 2 25.3 15 e+b+
591.7 5 3.8 14 e+b+
692.9 6 5.5 14 e+b+
741.0 5 1.5 10 e+b+
1034.6 2 99.7 20 e+b+
1531.4 5 3.0 12 e+b+
1736.4 6 28 5 e+b+
1754.0 5 19 6 e+b+

X-rays from 149mHo (56 s 3)

E (keV) I (%) Assignment
5,743 19.6 20 Dy Ll
6,458 51 3 Dy La2
6,495 460 30 Dy La1
6,534 6.6 5 Dy Lh
7,204 28 4 Dy Lb4
7,248 295 22 Dy Lb1
7,370 44 7 Dy Lb3
7,374 4.8 3 Dy Lb6
7,636 95 6 Dy Lb2
8,426 51 4 Dy Lg1
8,714 8.7 14 Dy Lg2
8,753 12.5 20 Dy Lg3
44,743 0.606 22 Dy Ka3
45,208 1621 50 Dy Ka2
45,998 2894 80 Dy Ka1
51,947 297 9 Dy Kb3
52,113 573 17 Dy Kb1
52,475 9.9 5 Dy Kb5
53,476 192 6 Dy Kb2
53,634 66 3 Dy Kb4

Betas from 149mHo (56 s 3)

>Eb endpoint (keV) Ib (%) Decay mode
2102,7 0.8 b+
2252,2 6 b+
2269,8 9 b+
3124,7 2.2 e
3265,2 0.9 b+
3274,2 13 e
3291,8 19 e
3313,3 3.3 b+
3468 2.7 b+
3539,8 8 b+
3634,1 4 b+
4006,2 12 b+
4287,2 0.6 e
4335,3 2.2 e
4490 1.6 e
4561,8 4.5 e
4656,1 2 e
5028,2 5.0 e