141m Gd
64 77
Half life: 24.5 s 5
Jp: (11/2-)
Decay mode: e+b+, IT
Ex(keV): 377.8 2
Sn (keV): 9.7E3 sy
Sp (keV): 3.4E3 sy
E(level): 377.8 2 keV
Literature cut-off date: 31-Aug-1989
Author(s): L.K. Peker
ENSDF citation: NDS 63,573 (1991)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 89 2 6.8E3 sy
IT 11 2

Gammas from 141mGd (24.5 s 5)

Eg (keV) Ig (%) Decay mode
59.8 1 0.7 3 IT
85.2 1 0.40 13 IT
96.4 1 1.8 3 e+b+
113.2 1 1.2 3 IT
119.6 1 0.7 3 IT
145.0 1 0.8 3 IT
198.4 1 3.6 4 IT
223.9 1 10.0 10 e+b+
258.2 1 3.1 3 IT
300.7 1 1.4 3 e+b+
351.1 1 13.9 14 e+b+
361.2 1 5.8 6 e+b+
389.2 1 1.9 3 e+b+
412.2 1 1.8 3 e+b+
457.6 1 1.2 3 e+b+
475.4 1 1.8 3 e+b+
487.5 1 1.7 3 e+b+
509.0 5 e+b+
526.0 2 2.6 7 e+b+
544.3 1 0.7 3 e+b+
557.5 1 3.5 3 e+b+
560.5 1 3.7 4 e+b+
574.9 3 7.9 8 e+b+
590.0 1 1.8 3 e+b+
599.6 1 1.7 3 e+b+
647.3 1 3.2 3 e+b+
652.9 1 2.9 3 e+b+
657.0 2 0.6 3 e+b+
700.6 1 1.1 3 e+b+
740.7 1 2.5 3 e+b+
746.4 1 1.0 3 e+b+
773.5 1 2.1 3 e+b+
826.7 1 1.2 3 e+b+
841.4 1 1.0 3 e+b+
864.4 1 0.8 3 e+b+
972.2 1 1.4 3 e+b+
976.2 1 1.2 3 e+b+
1036.4 1 0.6 3 e+b+
1072.6 2 0.28 14 e+b+
1097.6 1 1.7 3 e+b+
1148.5 1 0.7 3 e+b+
1164.0 1 0.7 3 e+b+
1172.2 1 0.8 3 e+b+
1338.0 2 0.8 4 e+b+
1348.0 2 0.8 3 e+b+
1397.2 2 1.2 3 e+b+
1922.8 2 0.8 3 e+b+

X-rays from 141mGd (24.5 s 5)

E (keV) I (%) Assignment
5,177 0.19 3 Eu Ll
5,362 0.050 14 Gd Ll
5,816 0.51 8 Eu La2
5,817 0.106 17 Eu Lh
5,846 4.6 7 Eu La1
6,026 0.13 4 Gd La2
6,050 0.023 7 Gd Lh
6,058 1.2 3 Gd La1
6,438 0.059 11 Eu Lb4
6,457 4.4 7 Eu Lb1
6,571 0.098 17 Eu Lb3
6,617 0.044 7 Eu Lb6
6,687 0.042 11 Gd Lb4
6,713 1.0 3 Gd Lb1
6,832 0.069 17 Gd Lb3
6,844 0.97 15 Eu Lb2
6,867 0.012 3 Gd Lb6
7,102 0.25 7 Gd Lb2
7,243 0.0020 6 Gd Lb5
7,484 0.74 12 Eu Lg1
7,768 0.019 3 Eu Lg2
7,790 0.17 5 Gd Lg1
7,795 0.026 5 Eu Lg3
7,930 0.0014 4 Gd Lg6
8,087 0.013 3 Gd Lg2
8,105 0.019 5 Gd Lg3
40,467 0.00130 13 Eu Ka3
40,902 4.8 5 Eu Ka2
41,542 8.6 9 Eu Ka1
41,864 0.00092 19 Gd Ka3
42,309 3.0 6 Gd Ka2
42,996 5.4 11 Gd Ka1
46,905 0.85 8 Eu Kb3
47,038 1.64 16 Eu Kb1
47,373 0.025 3 Eu Kb5
48,249 0.54 5 Eu Kb2
48,386 0.216 23 Eu Kb4
48,551 0.54 11 Gd Kb3
48,695 1.04 21 Gd Kb1
49,038 0.016 3 Gd Kb5
49,959 0.35 7 Gd Kb2
50,099 0.14 3 Gd Kb4

Betas from 141mGd (24.5 s 5)

>Eb endpoint (keV) Ib (%) Decay mode
4136,24 1.8 b+
4335,15 1.2 b+
4360,12 1.4 b+
5083,16 1.3 b+
5108,37 1.9 b+
5158,24 0.4 e
5188,15 2.9 b+
5232,62 4 b+
5285,93 3.5 b+
5318,75 4.0 b+
5357,15 0.23 e
5382,12 0.28 e
5406,45 2.6 b+
5483,83 7 b+
5498,98 3.3 b+
5698,21 2.7 b+
5708,05 8 b+
5835,45 8 b+
6059,35 27 b+
6105,16 0.17 e
6130,37 0.24 e
6210,15 0.35 e
6254,62 0.48 e
6307,93 0.4 e
6340,75 0.45 e
6428,45 0.28 e
6505,83 0.7 e
6520,98 0.34 e
6720,21 0.25 e
6730,05 0.7 e
6857,45 0.7 e
7081,35 2.1 e