151 Sm
62 89
Half life: 90 y 8
Jp: 5/2-
Decay mode: b-
Sn (keV): 5596.44 10
Sp (keV): 8268 20
Prod. mode: Fission product
Fast neutron activation
Thermal 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)
b- 100 76.7 5

Gammas from 151Sm (90 y 8)

Eg (keV) Ig (%) Decay mode
21.542 3 0.031 b-

X-rays from 151Sm (90 y 8)

E (keV) I (%) Assignment
5,177 0.00108 14 Eu Ll
5,816 0.0029 3 Eu La2
5,817 0.00056 4 Eu Lh
5,846 0.026 3 Eu La1
6,438 0.0131 20 Eu Lb4
6,457 0.0232 18 Eu Lb1
6,571 0.022 3 Eu Lb3
6,617 2.5E-04 3 Eu Lb6
6,844 0.0055 6 Eu Lb2
7,484 0.0039 3 Eu Lg1
7,768 0.0041 7 Eu Lg2
7,795 0.0058 9 Eu Lg3

Betas from 151Sm (90 y 8)

>Eb endpoint (keV) Ib (%) Decay mode
55,16 0.91 6 b-
76,7 99.09 6 b-