Table of Isotopes decay data

WWW Table of Radioactive Isotopes

154m	Pm
61	Pm	93

Half life:

2.68 m 7

Jp:

(3,4)

S_n (keV):

5804 74

S_p (keV):

8358 78

Prod. mode:

Fission product
Fast neutron activation

ENSDF citation:

NDS 69,507 (1993)

Literature cut-off date:

1-Mar-1993

Author(s):

R.G. Helmer

References since cut-off:

¹⁵⁴Pm decay from 1993-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)
b^-	100	4044 74

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	154PM B- DECAY (2.68 M)
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ^154mPm (2.68 m 7)
Eg (keV)	Ig (%)	Decay mode

45.5		b^-
64.548 25	4.8	b^-
81.99 2	15.4	b^-
104.30 4	0.14	b^-
107.896 25	6.8	b^-
138.0 3	0.22	b^-
143.74 15	0.48	b^-
171.6 3	7.1	b^-
171.8 3	0.32	b^-
184.810 25	32	b^-
214.0 3	0.32	b^-
230.82 3	6.3	b^-
232.08 3	4.4	b^-
247.75 15	0.71	b^-
249.52 15	1.01	b^-
256.1 4	0.006	b^-
273.96 20	0.27	b^-
276.00 25	0.90	b^-
277.04 6	2.31	b^-
279.93 4	11.9	b^-
280.1 3	0.27	b^-
291.25 20	0.63	b^-
293.1 3	0.34	b^-
303.10 20	0.61	b^-
307.3 3	0.33	b^-
315.77 20	0.68	b^-
339.68 20	0.70	b^-
354.90 20	0.68	b^-
359.16 8	4.09	b^-
364.67 10	0.65	b^-
371.7 3	0.36	b^-
375.06 8	1.95	b^-
402.15 10	1.62	b^-
406.63 15	0.63	b^-
415.23 15	1.24	b^-
438.76 20	2.18	b^-
447.5 3	0.44	b^-
471.36 20	1.02	b^-
482.57 20	1.44	b^-
494.55 25	0.59	b^-
526.0 4	1.62	b^-
526.7 4	0.29	b^-
528.9 5	0.23	b^-
546.66 6	14.5	b^-
592.5 3	1.24	b^-
628.14 25	1.34	b^-
637.2 1	0.45	b^-
661.4 2	0.27	b^-
681.7 3	0.68	b^-
700.0 3	0.65	b^-
701.1 3	0.57	b^-
709.1 3	0.59	b^-
721.0 3	0.76	b^-
730.1 4	0.44	b^-
742.2 3	2.34	b^-
743.4 3	2.80	b^-
745.40 15	3.22	b^-
752.3 2	0.32	b^-
802.7 3	0.52	b^-
833.4 3	2.46	b^-
834.35 21	3.11	b^-
839.36 4	3.9	b^-
853.1 5	0.74	b^-
861.2 3	0.50	b^-
866.9 4	0.29	b^-
901.9 3	1.45	b^-
909.7 3	0.93	b^-
910.93 6	0.31	b^-
921.36 6	2.8	b^-
930.38 8	5.4	b^-
933.5 4	0.77	b^-
958.1 4	0.33	b^-
974.0 4	0.29	b^-
1019.5 1	0.66	b^-
1024.3 3	0.54	b^-
1040.7 5	0.32	b^-
1095.84 6	0.41	b^-
1162.5 4	0.57	b^-
1173.5 3	0.88	b^-
1177.75 6	0.29	b^-
1204.6 1	1.33	b^-
1205.5 5	0.6	b^-
1223.21 25	0.45	b^-
1230.4 1	1.20	b^-
1261.0 1	1.17	b^-
1270.6 5	0.49	b^-
1272.5 1	1.28	b^-
1273.77 20	0.88	b^-
1317.7 1	1.16	b^-
1358.05 5	10.7	b^-
1398.1 1	0.8	b^-
1404.1 3	0.5	b^-
1411.73 20	0.8	b^-
1433.3 1	1.6	b^-
1440.0 3	10.8	b^-
1440.24 17	12.2	b^-
1457.3 1	3.82	b^-
1502.7 2	0.25	b^-
1538.1 2	0.63	b^-
1548.6 2	1.5	b^-
1551.01 25	1.03	b^-
1582.6 6	0.18	b^-
1611.97 25	1.27	b^-
1625.60 26	5.4	b^-
1655.39 10	4.4	b^-
1660.6 4	0.5	b^-
1719.74 25	0.7	b^-
1733.11 15	1.82	b^-
1796.85 15	2.75	b^-
1799.4 5	0.15	b^-
1840.20 10	4.0	b^-
1863.9 5	0.77	b^-
1878.3 5	0.17	b^-
1905.1 4	0.75	b^-
2026.9 3	0.71	b^-
2150.5 5	0.22	b^-
2211.9 3	0.6	b^-
2800.9 9	0.20	b^-

X-rays from ^154mPm (2.68 m 7)
E (keV)	I (%)	Assignment

4.993	0.198 20	Sm L_l
5.589	0.088 7	Sm L_h
5.610	0.53 3	Sm L_a2
5.636	4.8 3	Sm L_a1
6.196	0.126 20	Sm L_b4
6.206	3.6 3	Sm L_b1
6.317	0.21 3	Sm L_b3
6.371	0.044 3	Sm L_b6
6.587	1.01 7	Sm L_b2
7.183	0.59 5	Sm L_g1
7.471	0.039 7	Sm L_g2
7.489	0.055 9	Sm L_g3
39.097	0.00303 10	Sm K_a3
39.522	11.9 3	Sm K_a2
40.118	21.6 5	Sm K_a1
45.294	2.11 5	Sm K_b3
45.414	4.09 10	Sm K_b1
45.741	0.061 3	Sm K_b5
46.578	1.35 3	Sm K_b2
46.705	0.511 22	Sm K_b4

Betas from ^154mPm (2.68 m 7)
Eb endpoint (keV)	Ib (%)	Decay mode

1746.08	3.9	b^-
1807.2	1.7	b^-
1974.07	6	b^-
2053.28	68	b^-
2221.97	1.5	b^-
2235.3	1.8	b^-
2284.11	0.6	b^-
2375.11	0.6	b^-
2500.74	2.4	b^-
2599.95	3.1	b^-
3773.21	7	b^-

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