Table of Isotopes decay data

WWW Table of Radioactive Isotopes

99m	Nb
41	Nb	58

Half life:

2.6 m 2

E(level):

365.29 14 keV

Jp:

1/2-

S_n (keV):

6872 14

S_p (keV):

8340 24

Prod. mode:

Fission product

ENSDF citation:

NDS 73,1 (1994)

Literature cut-off date:

1-Aug-1994

Author(s):

L.K. Peker

References since cut-off:

⁹⁹Nb decay from 1994-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)
b^-	>96.2	3639 13
IT	<3.8

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	99NB B- DECAY (2.6 M)
	Tables:
	ENSDF data:
	Java applets:
IT	99NB IT DECAY (2.6 M)
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ^99mNb (2.6 m 2)
Eg (keV)	Ig (%)	Decay mode

97.785 3	7	b^-
137.723 7	1.32 7	b^-
174.32 14	0.273 20	b^-
197.40 14	0.246 20	b^-
253.50 7	3.70 20	b^-
263.80 12	0.76 6	b^-
271.7 4	0.153 13	b^-
280.35 23	0.260 20	b^-
351.20 7	2.77 15	b^-
356.8 3	0.126 13	b^-
365.1	2.8	IT
365.2 3	0.293 20	b^-
379.74 17	0.180 20	b^-
393.86 27	0.153 20	b^-
427.401 15	0.63 5	b^-
441.45 25	0.193 13	b^-
450.87 8	1.72 9	b^-
500.20 28	0.31 4	b^-
517.0	0.41 7	b^-
525.47 12	1.22 7	b^-
534.22 25	0.69 9	b^-
534.4 4	0.87 9	b^-
535.5 6	0.11 6	b^-
538.5 7	0.146 20	b^-
548.78 13	0.50 3	b^-
554.1 3	0.51 3	b^-
593.46 24	0.36 3	b^-
600.2 3	0.55 4	b^-
631.77 12	1.62 9	b^-
656.22 15	0.76 6	b^-
668.0 4	0.120 13	b^-
672.3 5	0.12 3	b^-
674.22 19	0.81 4	b^-
694.68 27	0.90 5	b^-
713.6 4	0.153 20	b^-
767.8 5	0.21 3	b^-
780.3 5	0.13 3	b^-
792.9 5	0.77 9	b^-
792.98 19	0.89 9	b^-
846.90 14	1.00 6	b^-
867.3 5	0.11 3	b^-
889.6 5	0.44 3	b^-
905.53 26	0.67 5	b^-
928.10 28	1.01 6	b^-
944.75 28	0.48 3	b^-
948.4 5	0.293 20	b^-
988.0 4	0.22 3	b^-
1002.8 4	0.19 3	b^-
1025.54 24	0.44 3	b^-
1047.0 8	0.07 3	b^-
1069.5 3	0.42 3	b^-
1080.6 3	0.279 20	b^-
1090.8 4	0.067 20	b^-
1100.10 28	0.153 20	b^-
1108.5 3	0.220 13	b^-
1111.9 5	0.06 3	b^-
1126.1 3	0.206 20	b^-
1140.9 4	0.07 3	b^-
1146.9 4	0.10 3	b^-
1157.7 5	0.10 3	b^-
1197.6 5	0.027 20	b^-
1219.9 4	0.060 20	b^-
1228.9 3	0.200 20	b^-
1244.5 4	0.11 3	b^-
1253.6 5	0.213 20	b^-
1258.1 3	0.58 6	b^-
1303.8 4	0.133 20	b^-
1314.6 3	0.58 5	b^-
1345.1 5	0.05 3	b^-
1367.8 4	0.173 20	b^-
1375.1 4	0.126 20	b^-
1382.3 4	0.126 20	b^-
1395.5 4	0.067 20	b^-
1403.3 4	0.07 3	b^-
1412.3 5	0.033 13	b^-
1446.7 4	0.12 3	b^-
1473.6 3	0.47 3	b^-
1531.5 4	0.29 3	b^-
1542.2 3	0.36 3	b^-
1569.0 4	0.140 20	b^-
1587.9 4	0.17 3	b^-
1647.9 3	0.226 20	b^-
1660.9 6	0.06 3	b^-
1696.4 3	0.79 7	b^-
1708.2 4	0.18 6	b^-
1735.8 4	0.57 5	b^-
1750.3 6	0.12 3	b^-
1780.5 9	0.13 4	b^-
1783.6 9	0.22 4	b^-
1796.6 5	0.27 4	b^-
1848.1 4	0.133 20	b^-
1893.9 5	0.09 3	b^-
1893.9 5	0.21 3	b^-
1931.0 4	0.133 13	b^-
1937.7 4	0.32 3	b^-
1950.4 6	0.22 4	b^-
1961.3 4	0.11 5	b^-
1992.7 4	0.60 5	b^-
2009.6 4	0.51 4	b^-
2026.5 5	0.27 3	b^-
2055.5 5	0.173 20	b^-
2092.7 5	0.206 20	b^-
2098.2 4	0.39 3	b^-
2111.8 8	0.11 3	b^-
2115.0 8	0.10 3	b^-
2134.7 4	1.12 7	b^-
2183.6 5	0.37 3	b^-
2189.9 6	0.17 3	b^-
2207.8 5	0.10 3	b^-
2237.1 4	0.67 7	b^-
2290.2 6	0.13 4	b^-
2302.6 6	0.07 3	b^-
2326.2 5	0.22 3	b^-
2336.1 9	0.15 3	b^-
2340.9 7	0.44 11	b^-
2375.0 9	0.11 3	b^-
2377.9 9	0.20 4	b^-
2434.8 6	0.067 20	b^-
2462.3 5	0.17 4	b^-
2500.8 6	0.047 20	b^-
2518.2 6	0.047 20	b^-
2543.7 5	0.79 6	b^-
2589.8 9	0.11 4	b^-
2593.0 8	0.19 4	b^-
2614.5 6	0.047 13	b^-
2632.0 6	0.14 4	b^-
2641.3 5	3.69 22	b^-
2660.9 6	0.060 20	b^-
2681.7 6	0.15 6	b^-
2687.0 5	0.64 5	b^-
2729.9 5	0.81 12	b^-
2753.6 9	0.047 20	b^-
2785.6 5	0.50 7	b^-
2851.5 5	3.09 20	b^-
2869.7 6	0.093 13	b^-
2923.7 5	0.19 3	b^-
2970.9 6	0.027 13	b^-
3001.7 5	0.15 3	b^-
3028.5 5	0.067 20	b^-
3090.6 9	0.020 13	b^-
3095.1 9	0.020 13	b^-
3141.0 6	0.080 20	b^-
3177.2 6	0.047 20	b^-
3263.3 7	0.040 20	b^-

X-rays from ^99mNb (2.6 m 2)
E (keV)	I (%)	Assignment

1.902	0.00087 15	Nb L_l
1.996	0.00041 6	Nb L_h
2.016	0.0075 13	Mo L_l
2.120	0.0037 6	Mo L_h
2.163	0.0021 3	Nb L_a2
2.166	0.019 3	Nb L_a1
2.257	0.0091 14	Nb L_b1
2.290	0.019 3	Mo L_a2
2.293	0.17 3	Mo L_a1
2.312	1.16E-04 18	Nb L_b6
2.319	0.00069 17	Nb L_b4
2.335	0.00099 25	Nb L_b3
2.367	0.00059 9	Nb L_b2
2.395	0.086 13	Mo L_b1
2.456	0.0049 12	Mo L_b4
2.458	0.00105 16	Mo L_b6
2.461	0.00040 6	Nb L_g1
2.473	0.0070 17	Mo L_b3
2.518	0.0088 14	Mo L_b2
2.623	0.0047 7	Mo L_g1
2.664	1.0E-04 3	Nb L_g2
2.664	1.9E-04 5	Nb L_g3
2.831	0.00073 19	Mo L_g2
2.831	0.0014 4	Mo L_g3
16.288	3.51E-06 13	Nb K_a3
16.521	0.199 6	Nb K_a2
16.615	0.381 11	Nb K_a1
17.134	3.45E-05 13	Mo K_a3
17.374	1.65 5	Mo K_a2
17.479	3.14 9	Mo K_a1
18.607	0.0299 9	Nb K_b3
18.623	0.0579 16	Nb K_b1
18.780	0.000278 12	Nb K_b5
18.952	0.0121 3	Nb K_b2
18.982	0.00270 12	Nb K_b4
19.590	0.251 7	Mo K_b3
19.607	0.487 14	Mo K_b1
19.771	0.00251 11	Mo K_b5
19.965	0.107 3	Mo K_b2
19.998	0.0222 10	Mo K_b4

Betas from ^99mNb (2.6 m 2)
Eb endpoint (keV)	Ib (%)	Decay mode

1060.19	0.25 6	b^-
1152.69	3.5 5	b^-
1218.56	1.83 24	b^-
1274.39	1.54 23	b^-
1317.37	1.38 18	b^-
1363.05	7.8 10	b^-
1664.05	1.2 2	b^-
1869.82	2.0 3	b^-
2110.9	1.56 20	b^-
2322.09	0.12 4	b^-
2433.19	0.060 22	b^-
2443.72	0.38 11	b^-
2510.79	0.65 10	b^-
2562.29	0.067 22	b^-
2621.69	0.31 6	b^-
2650.09	0.43 8	b^-
2721.29	0.13 5	b^-
2806.53	0.30 6	b^-
2836.85	0.06 8	b^-
2978.65	1.2 2	b^-
3059.6	0.76 14	b^-
3098.87	0.19 10	b^-
3113.97	1.46 20	b^-
3211.45	1.16 19	b^-
3251.89	0.21 9	b^-
3372.52	1.04 21	b^-
3389.21	0.36 9	b^-
3455.61	1.49 22	b^-
3479.09	1.04 17	b^-
3653.05	1.5 4	b^-
3906.5	1.0 4	b^-
4004.29	65 4	b^-

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