Table of Isotopes decay data

WWW Table of Radioactive Isotopes

239	U
92	U	147

Half life:

23.45 m 2

Jp:

5/2+

S_n (keV):

4806.26 21

S_p (keV):

7484 60

Prod. mode:

Thermal neutron activation

ENSDF citation:

NDS 66,839 (1992)

Literature cut-off date:

1-Jan-1992

Author(s):

M.R. Schmorak

References since cut-off:

²³⁹U decay from 1992-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)	References
b^-	100	1263.5 15	69Cl12 86LoZT

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	239U B- DECAY
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ²³⁹U (23.45 m 2)
Eg (keV)	Ig (%)	Decay mode

31.131 2	0.065 7	b^-
43.18 2		b^-
43.533 1	4.14 10	b^-
50.6 10		b^-
55.18 4	0.00008	b^-
71.21 2		b^-
74.664 1	48	b^-
86.71 2	0.052 6	b^-
111.0 2	0.020	b^-
117.84 2	0.13 4	b^-
141.89 3		b^-
170.17(calc)		b^-
186.15 2	0.032	b^-
187.40 4	0.006	b^-
191.97 6	0.0027	b^-
196.85 10	0.0021	b^-
201.19 7	0.0020	b^-
231.70 10	0.0030	b^-
255.25 10	0.0027	b^-
258.47 5	0.0025	b^-
260.77 6	0.0022	b^-
296.84 8	<0.0015	b^-
301.98 7	0.0014	b^-
304.17 10	0.0017	b^-
312.05 3	0.005	b^-
321.71 15	0.0012	b^-
343.74 10	0.0019	b^-
345.12 4	0.0030	b^-
363.1 2	0.0008	b^-
373.52 2	0.02	b^-
378.07 2	0.011	b^-
381.43 12	0.0014	b^-
395.30 7	0.0014	b^-
399.4 2	0.00048	b^-
407.70 5	0.0034	b^-
434.70 3	0.0043	b^-
448.15 3	0.008	b^-
455.60 6	0.0031	b^-
474.49 8	0.0034	b^-
486.87 2	0.06	b^-
492.68 4	0.0045	b^-
499.20 12	0.0014	b^-
504.77 4	0.0042	b^-
514.1 3	0.0007	b^-
517.92 9	0.0029	b^-
522.07 7	0.0023	b^-
530.5 2	0.0012	b^-
532.75 7	0.002	b^-
535.01 14	0.0013	b^-
544.58 6	0.0034	b^-
548.10 9	0.0020	b^-
563.9 2	0.0012	b^-
566.14 10	0.0020	b^-
577.49 9	<0.0017	b^-
577.49	<0.0017	b^-
587.77 4	0.023	b^-
602.68 4	0.0047	b^-
624.00 4	0.007	b^-
631.09 3	0.07	b^-
646.17 8	0.0023	b^-
658.5 4	0.0006	b^-
662.24 3	0.18	b^-
664.08 6	0.009	b^-
695.23 4	0.0042	b^-
700.93 8	0.002	b^-
703.48 10	0.0027	b^-
707.29 6	0.0028	b^-
710.35 15	0.0012	b^-
714.09 7	0.0039	b^-
722.87 4	0.027	b^-
730.92 4	0.012	b^-
745.64 10	0.0038	b^-
748.08 4	0.10	b^-
752.85 10	0.0014	b^-
772.95 5	0.0034	b^-
774.73 4	0.016	b^-
779.58 10	0.0012	b^-
788.19 6	0.005	b^-
791.3	0.009	b^-
793.55 8	0.0029	b^-
812.93 4	0.08	b^-
819.22 4	0.14	b^-
831.86 4	0.0034	b^-
840.3 3	0.0045	b^-
844.10 4	0.16	b^-
846.45 4	0.038	b^-
849.10 8	0.0016	b^-
863.57 12	0.0007	b^-
867.30 10	0.0015	b^-
874.35 5	0.0038	b^-
876.14 7	0.0020	b^-
884.50 4	0.012	b^-
889.56 4	0.023	b^-
895.31 5	0.0018	b^-
917.41 7	0.0031	b^-
920.87 8	0.0028	b^-
922.7 2	0.0012	b^-
928.18 4	0.006	b^-
931.61 7	0.0047	b^-
933.08 4	0.036	b^-
939.0 3	0.00038	b^-
959.22 5	0.007	b^-
961.09 4	0.017	b^-
964.30 4	0.09	b^-
965.58 10	0.0021	b^-
974.54 4	0.0039	b^-
992.21 4	0.0031	b^-
1018.14 13	<0.0011	b^-
1040.41 15	0.0011	b^-
1065.85 15	0.0007	b^-
1078.88 15	0.0015	b^-
1096.99 8	0.0026	b^-
1122.8 3	0.0007	b^-
1161.4 2	0.0010	b^-
1196.90 15	0.0009	b^-
1204.9 2	0.0015	b^-

X-rays from ²³⁹U (23.45 m 2)
E (keV)	I (%)	Assignment

11.871	0.33 4	Np L_l
13.761	0.53 5	Np L_a2
13.946	4.7 5	Np L_a1
15.861	0.069 8	Np L_h
16.109	0.091 9	Np L_b6
16.816	1.25 13	Np L_b2
17.061	0.91 16	Np L_b4
17.505	0.32 3	Np L_b5
17.751	2.6 3	Np L_b1
17.992	0.81 15	Np L_b3
20.784	0.63 8	Np L_g1
21.099	0.38 7	Np L_g2
21.342	0.35 7	Np L_g3
21.491	0.133 19	Np L_g6
96.242	1.8E-04 6	Np K_a3
97.069	0.048 17	Np K_a2
101.059	0.08 3	Np K_a1
113.303	0.009 3	Np K_b3
114.234	0.018 6	Np K_b1
114.912	0.00068 24	Np K_b5
117.463	0.0070 25	Np K_b2
117.875	0.0025 9	Np K_b4

Betas from ²³⁹U (23.45 m 2)
Eb endpoint (keV)	Ib (%)	Decay mode

299.25	0.23 2	b^-
419.4	0.25 3	b^-
444.25	0.27 3	b^-
568.28	0.02	b^-
601.24	0.28 3	b^-
1145.66	2	b^-
1188.84	70 2	b^-
1232.37	2	b^-
1263.5	25 4	b^-

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