142 Pm
61 81
Half life: 40.5 s 5
Jp: 1+
Decay mode: e+b+
Sn (keV): 8682 50
Sp (keV): 4172 43
Prod. mode: Charged particle reaction
Literature cut-off date: 31-Jul-1989
Author(s): L.K. Peker
ENSDF citation: NDS 63,647 (1991)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 4874 42

Gammas from 142Pm (40.5 s 5)

Eg (keV) Ig (%) Decay mode
641.4 5 0.384 20 e+b+
809.7 10 0.0122 24 e+b+
1007.9 8 0.0123 18 e+b+
1552.2 8 0.018 4 e+b+
1575.85 15 2.0 e+b+
1782 2 ~0.012 e+b+
2219 2 e+b+
2384.3 6 0.067 6 e+b+
2583.0 6 0.0274 20 e+b+
2845.9 8 0.047 4 e+b+
3045.7 10 0.0127 10 e+b+
3128.3 10 0.0092 12 e+b+
3358 2 0.0045 12 e+b+

X-rays from 142Pm (40.5 s 5)

E (keV) I (%) Assignment
4,633 0.043 4 Nd Ll
5,146 0.0167 13 Nd Lh
5,208 0.116 7 Nd La2
5,230 1.04 7 Nd La1
5,722 0.64 5 Nd Lb1
5,723 0.061 9 Nd Lb4
5,829 0.103 16 Nd Lb3
5,893 0.0092 6 Nd Lb6
6,090 0.222 15 Nd Lb2
6,604 0.103 8 Nd Lg1
6,883 0.018 3 Nd Lg2
6,901 0.026 4 Nd Lg3
36,443 0.00099 4 Nd Ka3
36,847 4.93 14 Nd Ka2
37,361 9.0 3 Nd Ka1
42,166 0.865 25 Nd Kb3
42,271 1.67 5 Nd Kb1
42,580 0.0224 10 Nd Kb5
43,335 0.546 16 Nd Kb2
43,451 0.202 9 Nd Kb4

Betas from 142Pm (40.5 s 5)

>Eb endpoint (keV) Ib (%) Decay mode
719,8 0.0010 b+
802,3 0.0010 b+
1002,1 0.0045 b+
1264,7 0.008 b+
1463,4 0.022 b+
1512 0.030 e
1630,8 0.16 b+
1741,8 0.049 e
1824,3 0.019 e
2024,1 0.08 e
2272,17 1.2 b+
2286,7 0.06 e
2485,4 0.11 e
2652,8 0.5 e
3294,17 1.4 e
3848 77 b+
4870 20 e