165m Dy
66 99
Half life: 1.257 m 6
Jp: 1/2-
Decay mode: IT, b-
Ex(keV): 108.160 3
Sn (keV): 5715.89 10
Sp (keV): 8.82E3 10
E(level): 108.160 3 keV
Prod. mode: Thermal neutron activation
Literature cut-off date: 1-Nov-1990
Author(s): L.K. Peker
ENSDF citation: NDS 65,439 (1992)

Decay properties

Mode Branching (%) Q-value (keV)
IT 97.76 11
b- 2.24 11 1286.1 19

Gammas from 165mDy (1.257 m 6)

Eg (keV) Ig (%) Decay mode
29.715 3 <0.006 b-
57.864 5 0.0081 12 b-
67.712 4 0.012 6 b-
87.585 4 0.0111 12 b-
89.753 8 b-
95.931 4 0.039 3 b-
108.160 3 3.01 9 IT
109.59 3 b-
119.47 3 0.0027 6 b-
153.803 6 0.242 7 b-
230.3 b-
251.73 5 0.0180 9 b-
251.9 b-
341.5 b-
361.68 2 0.534 16 b-
361.7 b-
371.3 b-
515.467 25 1.53 5 b-
647.3 b-
676.0 10 0.00045 24 b-
704.9 b-

X-rays from 165mDy (1.257 m 6)

E (keV) I (%) Assignment
5,743 0.217 24 Dy Ll
5,943 0.0019 4 Ho Ll
6,458 0.57 4 Dy La2
6,495 5.1 4 Dy La1
6,534 0.125 10 Dy Lh
6,680 0.0049 9 Ho La2
6,720 0.044 8 Ho La1
6,790 0.00066 12 Ho Lh
7,204 0.038 6 Dy Lb4
7,248 5.6 4 Dy Lb1
7,370 0.061 9 Dy Lb3
7,374 0.053 4 Dy Lb6
7,471 0.0041 8 Ho Lb4
7,526 0.030 6 Ho Lb1
7,635 0.00047 9 Ho Lb6
7,636 1.05 8 Dy Lb2
7,653 0.0066 12 Ho Lb3
7,910 0.0088 17 Ho Lb2
8,426 0.97 8 Dy Lg1
8,714 0.0119 20 Dy Lg2
8,753 0.017 3 Dy Lg3
8,757 0.0052 10 Ho Lg1
9,051 0.00129 25 Ho Lg2
9,088 0.0019 4 Ho Lg3
44,743 0.00098 4 Dy Ka3
45,208 2.62 10 Dy Ka2
45,998 4.67 17 Dy Ka1
46,223 5.6E-05 11 Ho Ka3
46,700 0.14 3 Ho Ka2
47,547 0.24 5 Ho Ka1
51,947 0.479 17 Dy Kb3
52,113 0.93 3 Dy Kb1
52,475 0.0160 8 Dy Kb5
53,476 0.309 11 Dy Kb2
53,634 0.107 5 Dy Kb4
53,695 0.025 5 Ho Kb3
53,876 0.048 9 Ho Kb1
54,246 0.00088 17 Ho Kb5
55,293 0.016 3 Ho Kb2
55,457 0.0051 10 Ho Kb4

Betas from 165mDy (1.257 m 6)

>Eb endpoint (keV) Ib (%) Decay mode
356,76 0.00050 b-
603,46 0.020 b-
878,79 1.90 14 b-
945 0.15 b-
964,87 0.10 b-
1032,58 0.16 6 b-