151 Gd
64 87
Half life: 124 d 1
Jp: 7/2-
Decay mode: e, a
Sn (keV): 6498 7
Sp (keV): 6687 7
Prod. mode: Charged particle reaction
Fast neutron activation
Literature cut-off date: 15-Jan-1997
Author(s): B. Singh
ENSDF citation: NDS 80, 263 (1997)

Decay properties

Mode Branching (%) Q-value (keV)
e 100 464 3
a ~8E-7 2653 3

Gammas from 151Gd (124 d 1)

Eg (keV) Ig (%) Decay mode
21.542 3 2.85 12 e
63.9 1 0.0009 3 e
63.92 7 0.00087 19 e
93.21 7 0.0019 6 e
102 e
106.57 1 0.0868 25 e
109.74 4 0.0029 14 e
110.33 6 0.0050 6 e
110.74 6 0.0068 12 e
153.60 1 6.20 3 e
157.08 10 0.00074 25 e
174.70 1 2.96 6 e
195.18 14 0.0009 3 e
196 <0.029 e
196.54 4 0.0285 12 e
221.80 7 0.0023 4 e
238.94 5 0.087 12 e
243.282 12 5.60 3 e
260.46 5 0.0428 25 e
269.5 10 0.0025 6 e
284.72 3 0.0022 6 e
286.09 2 0.089 3 e
298.97 3 0.0025 10 e
307.50 1 1.035 25 e
328.31 1 0.0825 25 e
332.11 3 0.0087 6 e
338.50 9 0.0016 3 e
345 1 0.0025 6 e
349.85 4 0.00329 19 e
353.66 2 0.128 3 e
394.26 9 0.00060 9 e
415.84 10 0.00043 9 e

X-rays from 151Gd (124 d 1)

E (keV) I (%) Assignment
5,177 0.35 4 Eu Ll
5,816 0.92 7 Eu La2
5,817 0.142 11 Eu Lh
5,846 8.3 7 Eu La1
6,438 1.62 25 Eu Lb4
6,457 5.9 5 Eu Lb1
6,571 2.7 4 Eu Lb3
6,617 0.080 6 Eu Lb6
6,844 1.75 14 Eu Lb2
7,484 0.99 8 Eu Lg1
7,768 0.50 8 Eu Lg2
7,795 0.72 12 Eu Lg3
40,467 0.00644 23 Eu Ka3
40,902 23.8 7 Eu Ka2
41,542 42.9 12 Eu Ka1
46,905 4.22 12 Eu Kb3
47,038 8.15 23 Eu Kb1
47,373 0.124 6 Eu Kb5
48,249 2.70 8 Eu Kb2
48,386 1.07 5 Eu Kb4

Betas from 151Gd (124 d 1)

>Eb endpoint (keV) Ib (%) Decay mode
48,21 0.0011 2 e
110,35 0.146 10 e
114,15 9.9 7 e
156,47 1.22 9 e
156,73 0.028 6 e
157,73 0.008 4 e
203,53 0.16 2 e
220,71 5.5 4 e
247,28 0.0010 4 e
267,46 0.010 e
442,46 74 6 e
464 9 7 e

Alphas from 151Gd (124 d 1)

Ea (keV) Ia (%)
2600 30 100