166 Dy
66 100
Half life: 81.6 h 1
Jp: 0+
Decay mode: b-
Sn (keV): 7043.5 4
Sp (keV): 9.22E3 sy
Prod. mode: Fission product
Thermal neutron activation
Literature cut-off date: 1-Oct-1990
Author(s): E.N. Shurshikov and N.V. Timofeeva
ENSDF citation: NDS 67,45 (1992)

Decay properties

Mode Branching (%) Q-value (keV)
b- 100 486.2 19

Gammas from 166Dy (81.6 h 1)

Eg (keV) Ig (%) Decay mode
28.242 9 1.13 8 b-
54.2400 7 0.81 12 b-
82.471 2 14 b-
290.61 3 0.014 4 b-
343.52 3 0.055 14 b-
371.76 3 0.52 11 b-
426.00 3 0.58 12 b-

X-rays from 166Dy (81.6 h 1)

E (keV) I (%) Assignment
5,943 0.28 4 Ho Ll
6,680 0.74 7 Ho La2
6,720 6.6 6 Ho La1
6,790 0.109 11 Ho Lh
7,471 0.65 10 Ho Lb4
7,526 5.0 5 Ho Lb1
7,635 0.072 7 Ho Lb6
7,653 1.04 17 Ho Lb3
7,910 1.34 13 Ho Lb2
8,757 0.87 9 Ho Lg1
9,051 0.21 4 Ho Lg2
9,088 0.30 5 Ho Lg3
46,223 0.00606 18 Ho Ka3
46,700 14.8 3 Ho Ka2
47,547 26.3 5 Ho Ka1
53,695 2.72 6 Ho Kb3
53,876 5.26 11 Ho Kb1
54,246 0.095 4 Ho Kb5
55,293 1.76 4 Ho Kb2
55,457 0.551 22 Ho Kb4

Betas from 166Dy (81.6 h 1)

>Eb endpoint (keV) Ib (%) Decay mode
60,19 1.2 2 b-
113,11 0.016 5 b-
403,73 92 7 b-
431,96 5.0 b-
486,2 5.0 b-