153 Ho
67 86
Half life: 2.01 m 3
Jp: 11/2-
Decay mode: e+b+, a
Sn (keV): 9512 31
Sp (keV): 2184 7
Literature cut-off date: 1-Nov-1997
Author(s): R.G. Helmer
ENSDF citation: NDS 83, 285 (1998)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 99.949 2 5 4130 6
a 0.051 25 4052 4

Gammas from 153Ho (2.01 m 3)

Eg (keV) Ig (%) Decay mode
66.2 4.8 e+b+
75.6 0.87 20 e+b+
84.8 1.6 e+b+
95.2 3 ~0.07 e+b+
108.7 2 ~2 e+b+
117.3 3 0.27 13 e+b+
125.1 3 0.13 7 e+b+
141.8 3 0.67 20 e+b+
161.5 2 ~0.7 e+b+
186.9 2 0.29 e+b+
192.8 2 0.40 13 e+b+
203.8 4 ~0.13 e+b+
230.0 6 ~0.7 e+b+
253.8 2 0.33 7 e+b+
270.6 2 ~0.7 e+b+
295.8 1 67 e+b+
341.0 3 0.25 e+b+
365.9 2 2.0 5 e+b+
392.5 4 0.33 13 e+b+
404.1 3 0.27 13 e+b+
404.1 3 0.27 13 e+b+
420.4 2 0.47 13 e+b+
431.0 5 ~0.07 e+b+
445.7 5 0.13 7 e+b+
449.7 4 0.20 7 e+b+
456.8 2 ~0.7 e+b+
468.2 2 0.94 13 e+b+
529.6 4 0.20 7 e+b+
541.2 4 0.94 13 e+b+
552.0 5 0.27 13 e+b+
565.5 2 0.40 13 e+b+
577.0 3 1.07 20 e+b+
579.7 3 0.8 3 e+b+
617.5 3 0.33 13 e+b+
636.7 2 5.36 20 e+b+
685.2 5 ~0.2 e+b+
688.5 2 3.7 3 e+b+
693.0 5 0.20 7 e+b+
712.0 5 0.20 7 e+b+
721.0 5 0.13 7 e+b+
726.8 3 1.21 20 e+b+
742.8 5 0.33 13 e+b+
745.2 3 0.27 13 e+b+
745.2 3 0.27 13 e+b+
772.2 3 0.40 13 e+b+
775.4 5 0.33 13 e+b+
784.8 4 0.67 13 e+b+
806.0 4 0.80 13 e+b+
812.1 5 0.20 7 e+b+
815.5 5 0.40 13 e+b+
836.1 4 0.54 13 e+b+
843.8 5 0.40 13 e+b+
847.5 3 0.74 13 e+b+
862.9 5 0.74 13 e+b+
864.0 5 0.40 13 e+b+
868.6 5 0.27 7 e+b+
885.1 5 0.33 7 e+b+
893.9 5 0.20 7 e+b+
910.4 4 0.94 13 e+b+
924.0 4 1.21 20 e+b+
1004.1 4 0.27 13 e+b+
1015.4 4 0.94 13 e+b+
1085.8 4 2.54 20 e+b+
1091.8 5 0.54 13 e+b+
1151.2 5 0.87 13 e+b+
1167.6 5 1.07 13 e+b+
1183.1 5 0.54 13 e+b+
1189.9 8 ~0.27 e+b+
1202.4 6 0.33 13 e+b+
1208.4 5 0.60 13 e+b+
1276.5 4 3.3 3 e+b+
1284.8 8 ~0.07 e+b+
1300.8 8 0.27 13 e+b+
1347.8 6 0.67 13 e+b+
1381.0 6 1.27 20 e+b+
1389.0 8 0.13 7 e+b+

X-rays from 153Ho (2.01 m 3)

E (keV) I (%) Assignment
5,743 0.26 6 Dy Ll
6,458 0.68 14 Dy La2
6,495 6.1 13 Dy La1
6,534 0.089 19 Dy Lh
7,204 0.35 9 Dy Lb4
7,248 4.0 8 Dy Lb1
7,370 0.56 14 Dy Lb3
7,374 0.064 13 Dy Lb6
7,636 1.3 3 Dy Lb2
8,426 0.69 15 Dy Lg1
8,714 0.11 3 Dy Lg2
8,753 0.16 4 Dy Lg3
44,743 0.0079 16 Dy Ka3
45,208 21 4 Dy Ka2
45,998 38 8 Dy Ka1
51,947 3.9 8 Dy Kb3
52,113 7.5 15 Dy Kb1
52,475 0.13 3 Dy Kb5
53,476 2.5 5 Dy Kb2
53,634 0.86 18 Dy Kb4

Betas from 153Ho (2.01 m 3)

>Eb endpoint (keV) Ib (%) Decay mode
1527 0.21 3 b+
1607,2 0.26 5 b+
1726,7 0.75 7 b+
1786,03 0.15 4 b+
1831,6 1.07 8 b+
1918,3 0.16 5 b+
2015,7 0.20 5 b+
2039,87 0.03 3 b+
2067,1 0.18 6 b+
2270,67 0.31 6 b+
2277,88 0.58 13 b+
2395,56 0.36 15 b+
2470,88 0.88 18 b+
2549 1.53 22 e
2629,2 1.6 3 e
2742,1 0.6 4 b+
2748,7 3.7 4 e
2808,03 0.65 17 e
2812,2 33 3 b+
2853,6 4.4 3 e
2940,3 0.58 17 e
3037,7 0.60 15 e
3061,87 0.10 10 e
3089,1 0.49 16 e
3292,67 0.64 12 e
3299,88 1.2 3 e
3417,56 0.6 3 e
3492,88 1.4 3 e
3764,1 0.7 4 e
3834,2 37 3 e

Alphas from 153Ho (2.01 m 3)

Ea (keV) Ia (%)
3910 5 100