140m Pm
61 79
Half life: 5.95 m 5
Jp: 7-
Decay mode: e+b+
Ex(keV): 0.40E+3 12
Sn (keV): 8964 66
Sp (keV): 3677 59
E(level): 0.40E+3 12 keV
Prod. mode: Charged particle reaction
Literature cut-off date: 1-Nov-1994
Author(s): L.K. Peker
ENSDF citation: NDS 73,261 (1994)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 6047 23

Gammas from 140mPm (5.95 m 5)

Eg (keV) Ig (%) Decay mode
90.06 3 0.19 3 e+b+
144.78 6 0.35 4 e+b+
257.9 4 1.4 8 e+b+
419.57 5 92 2 e+b+
474.01 7 1.0 2 e+b+
564.42 8 0.20 10 e+b+
566.1 5 0.29 15 e+b+
635.1 4 0.4 e+b+
651.8 4 0.5 3 e+b+
667.9 5 0.20 10 e+b+
695.51 9 0.20 4 e+b+
721.7 3 0.20 10 e+b+
773.74 6 100 5 e+b+
840.4 2 0.50 10 e+b+
880.4 4 0.5 4 e+b+
930.7 5 0.15 6 e+b+
1018.2 1 0.45 10 e+b+
1028.19 7 100 2 e+b+
1110.3 5 0.20 4 e+b+
1197.5 2 3.8 2 e+b+
1261.9 4 1.0 3 e+b+
1306.9 5 0.11 3 e+b+
1397.4 5 0.13 3 e+b+
1451.6 5 0.24 5 e+b+
1486.4 5 0.12 3 e+b+
1733.8 4 0.3 1 e+b+
1837.8 4 0.2 1 e+b+
1907.1 5 0.40 5 e+b+
1957.4 5 0.22 4 e+b+
2145.7 5 0.75 10 e+b+
2240.3 5 0.20 4 e+b+
2247.6 5 0.14 3 e+b+
2407.7 10 0.02 1 e+b+

X-rays from 140mPm (5.95 m 5)

E (keV) I (%) Assignment
4,633 0.076 8 Nd Ll
5,146 0.0303 23 Nd Lh
5,208 0.204 13 Nd La2
5,230 1.83 12 Nd La1
5,722 1.16 9 Nd Lb1
5,723 0.105 16 Nd Lb4
5,829 0.18 3 Nd Lb3
5,893 0.0161 10 Nd Lb6
6,090 0.39 3 Nd Lb2
6,604 0.186 15 Nd Lg1
6,883 0.032 5 Nd Lg2
6,901 0.045 7 Nd Lg3
36,443 0.00172 6 Nd Ka3
36,847 8.57 25 Nd Ka2
37,361 15.6 5 Nd Ka1
42,166 1.50 4 Nd Kb3
42,271 2.90 8 Nd Kb1
42,580 0.0389 18 Nd Kb5
43,335 0.95 3 Nd Kb2
43,451 0.351 16 Nd Kb4

Betas from 140mPm (5.95 m 5)

>Eb endpoint (keV) Ib (%) Decay mode
1057,9 0.05 3 b+
1075,4 0.010 7 b+
1751,8 0.13 4 b+
2006,1 1.32 22 b+
2079,9 0.70 11 e
2097,4 0.14 6 e
2185,6 0.19 6 b+
2363 0.33 7 b+
2481,6 0.21 8 b+
2582,8 0.16 9 b+
2773,8 0.35 6 e
3028,1 2.4 3 e
3058,8 0.35 9 b+
3203,6 63 5 b+
3207,6 0.26 7 e
3385 0.37 7 e
3503,6 0.19 8 e
3604,8 0.13 7 e
4080,8 0.18 5 e
4225,6 28 3 e