151m Tb
65 86
Half life: 25 s 3
Jp: (11/2-)
Decay mode: IT, e+b+
Ex(keV): 99.54 6
Sn (keV): 8589 9
Sp (keV): 3151 8
E(level): 99.54 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 93.8 4
e+b+ 6.2 4 2565 4

Gammas from 151mTb (25 s 3)

Eg (keV) Ig (%) Decay mode
22.92 2 3.1 5 IT
27.1 1 IT
49.46 2 22 IT
72.50 10 ~0.11 IT
379.39 4 6.3 3 e+b+
504.4 2 0.51 16 e+b+
522.77 4 1.52 13 e+b+
705.93 4 e+b+
830.81 14 3.30 22 e+b+

X-rays from 151mTb (25 s 3)

E (keV) I (%) Assignment
5,362 0.0178 18 Gd Ll
5,547 0.21 4 Tb Ll
6,026 0.047 3 Gd La2
6,050 0.0063 5 Gd Lh
6,058 0.42 3 Gd La1
6,239 0.56 8 Tb La2
6,273 5.0 8 Tb La1
6,284 0.104 12 Tb Lh
6,687 0.025 4 Gd Lb4
6,713 0.269 21 Gd Lb1
6,832 0.042 6 Gd Lb3
6,867 0.0042 3 Gd Lb6
6,940 2.5 4 Tb Lb4
6,977 4.5 5 Tb Lb1
7,097 4.1 7 Tb Lb3
7,102 0.088 6 Gd Lb2
7,116 0.051 8 Tb Lb6
7,243 0.00072 5 Gd Lb5
7,367 1.03 16 Tb Lb2
7,790 0.046 4 Gd Lg1
7,930 0.00038 4 Gd Lg6
8,087 0.0080 13 Gd Lg2
8,105 0.0113 18 Gd Lg3
8,105 0.78 9 Tb Lg1
8,398 0.80 15 Tb Lg2
8,423 1.14 21 Tb Lg3
41,864 0.000507 19 Gd Ka3
42,309 1.65 5 Gd Ka2
42,996 2.98 9 Gd Ka1
43,288 2.35E-05 7 Tb Ka3
43,744 0.0688 14 Tb Ka2
44,482 0.1236 25 Tb Ka1
48,551 0.296 9 Gd Kb3
48,695 0.572 17 Gd Kb1
49,038 0.0090 4 Gd Kb5
49,959 0.191 6 Gd Kb2
50,099 0.074 3 Gd Kb4
50,228 0.0125 3 Tb Kb3
50,384 0.0241 5 Tb Kb1
50,738 0.000397 16 Tb Kb5
51,698 0.00801 17 Tb Kb2
51,849 0.00297 12 Tb Kb4

Betas from 151mTb (25 s 3)

>Eb endpoint (keV) Ib (%) Decay mode
432,48 0.006 3 b+
740,57 0.020 9 b+
1263,24 0.14 8 b+
1454,48 3.8 17 e
1762,57 1.5 7 e
2285,24 1.7 10 e