Table of Isotopes decay data

WWW Table of Radioactive Isotopes

149	Nd
60	Nd	89

Half life:

1.728 h 1

Jp:

5/2-

S_n (keV):

5038.68 10

S_p (keV):

9188 89

Prod. mode:

Fission product
Fast neutron activation
Thermal neutron activation

ENSDF citation:

NDS 73,351 (1994)

Literature cut-off date:

1-Dec-1994

Author(s):

B. Singh

References since cut-off:

¹⁴⁹Nd decay from 1994-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)
b^-	100	1691 4

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	149ND B- DECAY (1.728 H)
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ¹⁴⁹Nd (1.728 h 1)
Eg (keV)	Ig (%)	Decay mode

22.7	0.0054 16	b^-
30.00 3	0.017 4	b^-
36.7	0.018 8	b^-
58.883 20	1.30 21	b^-
65.23	0.016 5	b^-
65.4	0.031 10	b^-
74.32 3	1.11 23	b^-
74.66 10	0.98 16	b^-
75.69 6	0.228 21	b^-
91.125 22		b^-
94.88 10	0.041 13	b^-
96.9	0.034 13	b^-
97.001 12	1.45 10	b^-
107.79 3	0.085 16	b^-
112.52 4	0.119 16	b^-
114.314 11	19.2 13	b^-
116.930 24	0.11 3	b^-
122.415 13	0.256 16	b^-
126.630 18	0.111 8	b^-
131.7	0.0044	b^-
137.05 3	0.062 5	b^-
139.210 12	0.508 23	b^-
141.06 7	0.039 3	b^-
155.1	0.034 16	b^-
155.873 9	5.93 21	b^-
176.27	0.049 10	b^-
177.818 18	0.155 16	b^-
185.489 25	0.104 5	b^-
188.640 8	1.79 8	b^-
188.8	0.010	b^-
192.026 9	0.570 18	b^-
197.4	0.013	b^-
198.00	0.049 5	b^-
198.928 8	1.39 4	b^-
208.147 9	2.546 10	b^-
211.309 7	25.9 10	b^-
213.947 16	0.40 3	b^-
226.847 19	0.163 5	b^-
229.566 9	0.482 13	b^-
239.6	0.013	b^-
240.220 7	3.94 16	b^-
245.5	0.21 10	b^-
245.72 5	0.80 21	b^-
250.826 31	0.034 3	b^-
254.228 22	0.085 3	b^-
258.067 13	0.376 10	b^-
263.4	0.023	b^-
267.693 8	6.03 16	b^-
270.166 7	10.7 3	b^-
273.24 4	0.18 8	b^-
273.5	0.08 4	b^-
275.437 11	0.650 16	b^-
276.960 17	0.342 10	b^-
282.4	0.017 7	b^-
282.456 10	0.616 16	b^-
287.7	0.013 5	b^-
288.194 10	0.692 18	b^-
294.802 10	0.570 16	b^-
301.128 14	0.376 10	b^-
310.979 13	0.510 13	b^-
318.2 3	0.009 4	b^-
326.554 10	4.56 10	b^-
329.18	0.021 10	b^-
342.81 10	0.083 18	b^-
347.843 18	0.161 5	b^-
349.231 9	1.38 4	b^-
352.78 3	0.054 3	b^-
357.03 4	0.047 3	b^-
358.49 10	0.010 5	b^-
360.052 18	0.153 5	b^-
361.4	0.006 3	b^-
366.634 14	0.541 16	b^-
376.9	0.008 4	b^-
380.79 7	0.052 3	b^-
384.687 16	0.267 8	b^-
390.9	0.008 3	b^-
396.76 4	0.073 3	b^-
399.1	0.015 6	b^-
423.553 10	7.4 4	b^-
425.22 3	0.272 10	b^-
432.66	0.013 5	b^-
439.6	0.036 16	b^-
443.551 11	1.15 5	b^-
443.7	0.010	b^-
448.80 20	0.008 4	b^-
462.34 10	0.041 21	b^-
470.5	0.010 5	b^-
480.32 5	0.041 3	b^-
483.59 5	0.067 3	b^-
493.85 5	0.060 5	b^-
498.06	0.010 3	b^-
498.62	0.036 3	b^-
510.30 5	0.062 16	b^-
512.7	0.013 5	b^-
512.7	0.013 5	b^-
515.75 9	0.036 5	b^-
527.6	0.012 3	b^-
533.20 4	0.091 5	b^-
536.6	0.047 21	b^-
538.15 6		b^-
540.509 10	6.58 23	b^-
545.5	0.009	b^-
546.5	0.009	b^-
547.1	0.016 8	b^-
547.4	0.010 5	b^-
555.88 9	0.59 3	b^-
556.83 9	0.44 5	b^-
558.0	0.010	b^-
563.8	0.009 4	b^-
567.56	0.017 3	b^-
575.4 3	0.008 3	b^-
579.28 3	0.075 5	b^-
582.9	0.018 8	b^-
583.03 3	0.049 13	b^-
588.5 3	0.0057 21	b^-
594.40 5	0.028 3	b^-
598.06 5	0.028 3	b^-
606.67 16	0.010 5	b^-
617.9	0.008 3	b^-
630.237 19	0.189 3	b^-
635.7	0.067 13	b^-
636.2	0.052 10	b^-
651.0	0.06 3	b^-
653.9	0.018	b^-
654.831 13	8.0 4	b^-
657.2	0.018 8	b^-
661.90 11	0.0052 21	b^-
671.56 10	0.010 4	b^-
673.58 7	0.011 3	b^-
675.79 4	0.0254 18	b^-
678.1	0.005	b^-
681.34 15	0.0080 16	b^-
686.943 21	0.088 5	b^-
696.264 21	0.171 10	b^-
704.07 10	0.0034 16	b^-
712.59 3	0.070 5	b^-
718.43 4	0.049 5	b^-
727.88 5	0.0163 18	b^-
740.57 3	0.0142 3	b^-
743.5 4	0.0026 10	b^-
749.63 5	0.0135 16	b^-
754.291 21	0.039 3	b^-
758.65 8	0.0155 16	b^-
758.65 8	0.0155 16	b^-
761.46 5	0.028 3	b^-
765.1	0.0075 18	b^-
768.172 21	0.060 5	b^-
774.6	0.0031 13	b^-
781.40 6	0.0039 10	b^-
786.73 4	0.0101 13	b^-
793.43 3	0.0225 18	b^-
795.93 9	0.0070 10	b^-
808.843 20	0.189 13	b^-
809.6	0.016	b^-
813.19 8	0.0114 18	b^-
818.18	0.0057 16	b^-
828.6	0.0085 21	b^-
829.35 18		b^-
832.09 5	0.023 3	b^-
837.40 3	0.031 3	b^-
842.847 23	0.052 5	b^-
849.926 25	0.0218 18	b^-
854.74	0.0044 10	b^-
859.42 5		b^-
861.54 3	0.0176 18	b^-
864.9	0.0034 13	b^-
865.00 5	0.013 7	b^-
871.375 23	0.034 3	b^-
874.00 8	0.0047 10	b^-
877.9 3	0.0021 16	b^-
886.59 8	0.0054 10	b^-
893.3	0.0044 10	b^-
896.65 14	0.0039 13	b^-
907.69 7	0.0044 8	b^-
911.3	0.016	b^-
915.35 9	0.0021 10	b^-
920.3 2	0.0039 16	b^-
923.874 23	0.101 8	b^-
929.2	<0.010	b^-
929.8 4	0.0109 13	b^-
935.90 6	0.0047 8	b^-
938.79 5	0.0060 8	b^-
942.97 17	0.0031 10	b^-
945.80 3	0.0215 18	b^-
951.3	0.0026 10	b^-
952.0	0.008 3	b^-
963.95 3	0.025 3	b^-
967.44 4	0.0083 10	b^-
971.77 9	0.0028 8	b^-
978.8	0.016 5	b^-
979.013 23	0.078 10	b^-
986.68 10	0.0023 5	b^-
992.83 6	0.0148 16	b^-
993.05	0.0039 18	b^-
1021.8	0.0026 10	b^-
1022.78 3	0.104 8	b^-
1027.18 4	0.0088 16	b^-
1031.77 8	0.0044 13	b^-
1041.95 3	0.028 3	b^-
1051.90 11	0.0044 13	b^-
1075.95 4	0.021 3	b^-
1078.76 3	0.063 7	b^-
1100.77 3	0.049 5	b^-
1123.47 8	0.0150 23	b^-
1125.32 5	0.030 4	b^-
1128.56 11	0.0031 8	b^-
1135.94 9	0.0021 8	b^-
1141.77 8	0.0026 10	b^-
1141.77 8	0.0026 10	b^-
1150.08 8	0.0231 23	b^-
1156.3 4	0.0010 5	b^-
1171.97 10	0.0039 8	b^-
1175.75 6	0.0034 8	b^-
1190.28 7	0.0023 5	b^-
1197.84 6	0.0067 10	b^-
1202.29 10	0.0016 5	b^-
1225.67 11	0.0016 5	b^-
1234.12 4	0.026 3	b^-
1239.5 3	0.0018 5	b^-
1259.62 7	0.0041 8	b^-
1264.02 6	0.0075 13	b^-
1280.28 12	0.0010 5	b^-
1284.49 13	0.0016 5	b^-
1290.11 6	0.0041 8	b^-
1298.32 10	0.0008 5	b^-
1307.6	0.0010 5	b^-
1312.13 6	0.0073 10	b^-
1357.26 11	0.0021 5	b^-
1381.42 8	0.0021 5	b^-
1448.07 19	0.0005 3	b^-
1454.29 12	0.0013 5	b^-
1473.8 3		b^-
1495.80 14	0.0016 5	b^-
1568.43 18	0.0005 3	b^-

X-rays from ¹⁴⁹Nd (1.728 h 1)
E (keV)	I (%)	Assignment

4.809	0.103 13	Pm L_l
5.363	0.041 4	Pm L_h
5.408	0.28 3	Pm L_a2
5.432	2.48 23	Pm L_a1
5.957	0.113 18	Pm L_b4
5.961	1.63 17	Pm L_b1
6.071	0.19 3	Pm L_b3
6.128	0.0223 21	Pm L_b6
6.339	0.53 5	Pm L_b2
6.892	0.27 3	Pm L_g1
7.186	0.035 6	Pm L_g2
7.186	0.049 8	Pm L_g3
37.756	0.00204 10	Pm K_a3
38.171	9.3 4	Pm K_a2
38.725	16.9 8	Pm K_a1
43.713	1.65 7	Pm K_b3
43.827	3.19 14	Pm K_b1
44.145	0.046 3	Pm K_b5
44.942	1.05 5	Pm K_b2
45.064	0.394 22	Pm K_b4

Betas from ¹⁴⁹Nd (1.728 h 1)
Eb endpoint (keV)	Ib (%)	Decay mode

122.42	0.0018 2	b^-
195.16	0.0098 15	b^-
242.76	0.0047 9	b^-
278.74	0.032 8	b^-
296.7	0.016 6	b^-
378.89	0.182 14	b^-
400.92	0.089 9	b^-
426.84	0.034 4	b^-
451.38	0.099 8	b^-
456.9	0.94 5	b^-
500.74	0.15 2	b^-
534.96	0.031 2	b^-
549.47	0.085 6	b^-
640.82	0.022 2	b^-
647.6	0.041 4	b^-
659.32	0.113 9	b^-
748.08	0.08 1	b^-
767.11	0.30 2	b^-
806.11	0.011 3	b^-
818.04	0.028 6	b^-
904.28	0.074 8	b^-
922.81	0.66 6	b^-
932.35	0.036 8	b^-
940.62	0.07 2	b^-
946.42	1.11 6	b^-
970	0.012	b^-
1036.16	19.1 9	b^-
1039.98	0.30 5	b^-
1132.7	0.02	b^-
1143.87	0.14	b^-
1153.14	21.5 10	b^-
1228.81	1.2 3	b^-
1265.72	0.60 9	b^-
1275.55	0.16 3	b^-
1294.23	3.31 14	b^-
1303.44	0.6	b^-
1330.96	0.2	b^-
1402.79	0.02	b^-
1420.83	17.5 18	b^-
1479.69	24.7 17	b^-
1502.37	2.8	b^-
1576.69	6 3	b^-

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