155 Pm
61 94
Half life: 41.5 s 2
Jp: (5/2-)
Decay mode: b-
Sn (keV): 6627 79
Sp (keV): 8.58E3 12
Literature cut-off date: 1-Mar-1994
Author(s): C.W. Reich
ENSDF citation: NDS 71,709 (1994)

Decay properties

Mode Branching (%) Q-value (keV)
b- 100 3224 30

Gammas from 155Pm (41.5 s 2)

Eg (keV) Ig (%) Decay mode
53.033 2 0.94 16 b-
409.873 2 2.18 16 b-
725.123 7 5.30 23 b-
761.631 20 1.5 3 b-
778.156 8 8 b-

X-rays from 155Pm (41.5 s 2)

E (keV) I (%) Assignment
4,993 0.023 5 Sm Ll
5,589 0.0089 16 Sm Lh
5,610 0.062 11 Sm La2
5,636 0.56 10 Sm La1
6,196 0.029 7 Sm Lb4
6,206 0.36 7 Sm Lb1
6,317 0.049 11 Sm Lb3
6,371 0.0052 9 Sm Lb6
6,587 0.119 21 Sm Lb2
7,183 0.060 11 Sm Lg1
7,471 0.0091 21 Sm Lg2
7,489 0.013 3 Sm Lg3
39,097 0.00058 10 Sm Ka3
39,522 2.3 4 Sm Ka2
40,118 4.1 7 Sm Ka1
45,294 0.40 7 Sm Kb3
45,414 0.78 13 Sm Kb1
45,741 0.0116 20 Sm Kb5
46,578 0.26 4 Sm Kb2
46,705 0.098 17 Sm Kb4