151 Tb
65 86
Half life: 17.609 h 1
Jp: 1/2(+)
Decay mode: e+b+, a
Sn (keV): 8589 9
Sp (keV): 3151 8
Prod. mode: Charged particle reaction
Literature cut-off date: 15-Jan-1997
Author(s): B. Singh
ENSDF citation: NDS 80, 263 (1997)

Decay properties

Mode Branching (%) Q-value (keV)
e+b+ 100 2565 4
a 9.5E-3 1 5 3497 4

Gammas from 151Tb (17.609 h 1)

Eg (keV) Ig (%) Decay mode
108.088 10 24.3 9 e+b+
139.95 5 0.048 3 e+b+
143.0 5 0.020 6 e+b+
148.918 11 0.357 14 e+b+
160.762 10 0.481 17 e+b+
180.186 10 11.5 4 e+b+
191.2 5 0.21 4 e+b+
191.96 2 3.62 11 e+b+
193.94 12 0.181 17 e+b+
216.04 3 0.122 6 e+b+
218.65 13 0.025 3 e+b+
225.12 4 0.085 6 e+b+
236.14 3 0.122 9 e+b+
240.36 2 0.246 9 e+b+
248.30 3 0.260 14 e+b+
251.863 10 26.3 9 e+b+
252.3 5 0.34 9 e+b+
252.4 5 0.062 14 e+b+
263.707 17 0.198 9 e+b+
275.61 6 0.040 6 e+b+
278.70 4 0.096 6 e+b+
287.357 10 28.3 9 e+b+
318.6 5 0.020 6 e+b+
318.60 3 0.379 14 e+b+
322.21 22 0.048 3 e+b+
326.1 5 0.042 9 e+b+
354.21 12 0.017 9 e+b+
361.61 6 0.102 17 e+b+
365.5 5 0.023 6 e+b+
368.9 2 0.0079 17 e+b+
373.5 5 0.014 3 e+b+
380.356 10 4.81 17 e+b+
385.156 10 1.04 3 e+b+
391.67 8 0.173 23 e+b+
395.444 10 10.8 3 e+b+
401.9 5 0.020 11 e+b+
405.67 9 0.031 3 e+b+
412.6 5 0.017 6 e+b+
416.390 10 1.95 6 e+b+
419.6 5 0.042 9 e+b+
426.692 10 4.33 14 e+b+
428.6 5 0.045 9 e+b+
439.60 8 0.037 3 e+b+
443.879 10 10.8 3 e+b+
451.73 9 0.023 3 e+b+
456.74 14 0.023 3 e+b+
460.40 5 0.062 3 e+b+
467.0 5 0.093 20 e+b+
467.506 10 0.88 3 e+b+
468.4 5 0.020 6 e+b+
476.55 3 1.36 6 e+b+
479.357 10 15.4 5 e+b+
499.5 5 0.14 3 e+b+
500.1 5 0.28 6 e+b+
508.2 6 0.034 14 e+b+
512.0 5 0.16 3 e+b+
512.5 5 0.54 11 e+b+
518.18 5 0.062 3 e+b+
534.67 4 0.079 3 e+b+
537.293 13 0.419 14 e+b+
543.8 1 0.023 3 e+b+
556.3 2 0.045 3 e+b+
556.7 5 0.020 3 e+b+
562.5 1 0.074 3 e+b+
572.5 6 0.020 9 e+b+
576.9 6 0.025 3 e+b+
578.6 5 0.020 6 e+b+
579.8 5 0.042 9 e+b+
582.35 9 0.074 3 e+b+
586.8 5 0.27 5 e+b+
587.46 2 15.6 5 e+b+
591.8 5 0.020 6 e+b+
593.3 5 0.025 6 e+b+
604.761 16 3.28 11 e+b+
616.561 15 10.4 3 e+b+
620.1 5 0.031 6 e+b+
620.594 16 0.57 3 e+b+
629.23 3 0.099 3 e+b+
637.90 13 0.023 3 e+b+
644.78 10 0.042 3 e+b+
656.78 4 0.433 20 e+b+
658.58 13 0.125 9 e+b+
660.3 5 0.031 9 e+b+
660.94 3 0.444 17 e+b+
664.0 5 0.025 6 e+b+
666.1 5 0.011 6 e+b+
671.96 9 0.042 6 e+b+
679.1 5 0.028 6 e+b+
691.0 5 0.074 14 e+b+
691.6 5 0.16 3 e+b+
692.06 4 1.39 9 e+b+
703.4 5 0.020 6 e+b+
703.75 10 3.79 11 e+b+
713.25 15 0.014 14 e+b+
725.30 9 0.031 3 e+b+
727.43 13 0.252 20 e+b+
731.2 5 0.62 14 e+b+
731.227 11 7.70 25 e+b+
749.24 9 0.0170 11 e+b+
755.78 16 0.0057 20 e+b+
762.45 3 0.325 11 e+b+
765.7 5 0.028 3 e+b+
772.52 6 0.045 3 e+b+
784.3 2 0.040 3 e+b+
786.5 5 0.023 3 e+b+
791.7 5 0.020 3 e+b+
794.28 9 0.085 3 e+b+
796.8 5 0.054 11 e+b+
798.23 6 0.108 6 e+b+
803.7 5 0.020 6 e+b+
805.47 2 0.79 3 e+b+
807.0 5 0.028 6 e+b+
811.81 4 0.198 9 e+b+
817.96 24 0.0113 14 e+b+
824.18 13 0.0170 11 e+b+
830.65 10 0.037 3 e+b+
835.2 5 0.017 6 e+b+
837.0 5 0.008 3 e+b+
839.21 7 0.071 3 e+b+
839.8 5 0.034 6 e+b+
842.15 5 0.079 3 e+b+
852.36 6 0.057 3 e+b+
864.98 3 0.158 6 e+b+
868.16 26 0.023 3 e+b+
870.0 2 0.031 6 e+b+
871.76 21 0.017 6 e+b+
874.11 11 0.028 3 e+b+
876.68 24 0.014 3 e+b+
878.89 21 0.048 6 e+b+
880.79 15 0.085 6 e+b+
883.6 5 0.108 23 e+b+
884.0 5 0.020 6 e+b+
884.8 5 0.127 25 e+b+
886.1 5 0.0028 14 e+b+
889.9 2 0.0198 17 e+b+
894.0 5 0.0028 14 e+b+
894.7 2 0.023 3 e+b+
897.83 18 0.031 3 e+b+
905.6 5 0.51 11 e+b+
905.9 5 0.54 11 e+b+
913.1 5 0.023 6 e+b+
913.6 5 0.14 3 e+b+
913.8 5 0.0028 14 e+b+
914.0 5 0.011 3 e+b+
917.8 5 0.034 9 e+b+
918.0 5 0.034 6 e+b+
923.37 13 0.020 3 e+b+
929.83 11 0.031 3 e+b+
938.7 5 0.093 20 e+b+
939.1 5 0.045 9 e+b+
939.2 5 0.031 6 e+b+
946.8 5 0.045 9 e+b+
947.3 5 0.062 14 e+b+
949.7 3 0.0142 17 e+b+
953.3 2 0.0226 17 e+b+
956.93 12 0.040 3 e+b+
966.25 11 0.034 3 e+b+
967.4 6 0.017 17 e+b+
974.14 9 0.068 3 e+b+
977.1 5 0.037 9 e+b+
979.48 4 0.408 14 e+b+
982.1 5 0.065 14 e+b+
983.4 5 0.088 17 e+b+
986.3 4 0.017 6 e+b+
990.13 18 0.034 3 e+b+
997.29 23 0.0113 11 e+b+
1001.87 11 0.031 3 e+b+
1009.69 3 0.164 6 e+b+
1018.99 17 0.0226 20 e+b+
1025.12 4 0.201 6 e+b+
1029.55 5 0.105 3 e+b+
1040.5 8 0.0085 17 e+b+
1044.2 4 0.0085 14 e+b+
1049.83 4 0.113 6 e+b+
1051.5 5 0.011 3 e+b+
1052.0 5 0.057 11 e+b+
1057.3 5 0.025 6 e+b+
1061.59 5 0.243 11 e+b+
1078.80 7 0.074 3 e+b+
1080.96 19 0.025 3 e+b+
1084.7 2 0.0170 14 e+b+
1087.1 5 0.008 3 e+b+
1087.6 5 0.020 6 e+b+
1091.04 9 0.079 3 e+b+
1095.6 5 0.011 3 e+b+
1097.92 7 0.110 3 e+b+
1109.96 2 0.87 3 e+b+
1112.4 5 0.0028 14 e+b+
1114.1 2 0.028 3 e+b+
1120.2 5 0.057 11 e+b+
1120.8 5 0.025 6 e+b+
1125.28 14 0.040 3 e+b+
1128.8 5 0.011 3 e+b+
1129.3 5 0.014 3 e+b+
1132.0 5 0.076 9 e+b+
1132.2 5 0.014 3 e+b+
1137.28 11 0.0170 14 e+b+
1150.79 10 0.037 3 e+b+
1157.4 5 0.16 3 e+b+
1158.0 5 0.034 9 e+b+
1158.3 5 0.008 3 e+b+
1163.0 1 0.037 3 e+b+
1165.4 5 0.017 6 e+b+
1170.7 5 0.037 6 e+b+
1170.98 3 0.591 20 e+b+
1177.4 5 0.006 3 e+b+
1182.13 4 0.289 9 e+b+
1191.13 5 0.153 6 e+b+
1195.00 5 0.158 6 e+b+
1199.3 5 0.008 3 e+b+
1202.96 5 0.074 3 e+b+
1206.5 6 0.009 5 e+b+
1210.5 5 0.006 3 e+b+
1213.37 9 0.045 3 e+b+
1217.4 2 0.017 3 e+b+
1222.53 3 0.591 20 e+b+
1232.0 5 0.020 6 e+b+
1232.1 5 0.059 11 e+b+
1235.2 8 0.011 3 e+b+
1237.1 4 0.031 9 e+b+
1249.43 8 0.054 3 e+b+
1259.1 5 0.054 11 e+b+
1259.4 5 0.006 3 e+b+
1260.7 3 0.023 6 e+b+
1264.0 3 0.0226 14 e+b+
1267.9 5 0.008 3 e+b+
1269.1 6 0.008 3 e+b+
1279.20 13 0.028 3 e+b+
1281.00 6 0.127 6 e+b+
1297.10 9 0.028 3 e+b+
1303.3 3 0.014 3 e+b+
1305.81 9 0.023 3 e+b+
1307.3 5 0.008 3 e+b+
1312.18 5 0.651 20 e+b+
1315.10 20 0.020 3 e+b+
1318.86 18 0.011 6 e+b+
1320.5 5 0.006 3 e+b+
1320.7 5 0.011 3 e+b+
1339.01 17 0.023 3 e+b+
1345.3 6 0.007 3 e+b+
1348.19 6 0.201 6 e+b+
1350.3 5 0.006 3 e+b+
1350.3 5 0.028 6 e+b+
1351.9 5 0.25 6 e+b+
1361.2 5 0.017 3 e+b+
1362.21 5 0.125 3 e+b+
1364.8 7 0.0028 14 e+b+
1369.56 9 0.042 3 e+b+
1383.12 5 0.314 9 e+b+
1385.42 9 0.079 3 e+b+
1392.7 2 0.014 3 e+b+
1394.1 2 0.034 3 e+b+
1395.3 5 0.014 3 e+b+
1397.0 1 0.059 3 e+b+
1402.5 2 0.0085 11 e+b+
1405.1 4 0.0113 11 e+b+
1410.4 2 0.023 3 e+b+
1413.7 5 0.011 3 e+b+
1435.7 2 0.0085 11 e+b+
1439.4 5 0.011 3 e+b+
1441.15 17 0.020 3 e+b+
1446.86 6 0.091 3 e+b+
1450.34 7 0.065 3 e+b+
1455.6 5 0.011 3 e+b+
1456.4 5 0.028 6 e+b+
1457.3 5 0.014 3 e+b+
1458.7 5 0.014 3 e+b+
1464.3 2 0.023 3 e+b+
1468.3 3 0.0085 9 e+b+
1479.1 5 0.0057 9 e+b+
1483.52 5 0.532 17 e+b+
1495.3 5 0.054 14 e+b+
1495.4 5 0.18 4 e+b+
1495.5 5 0.014 3 e+b+
1500.4 2 0.0113 23 e+b+
1508.1 5 0.011 3 e+b+
1508.2 5 0.006 3 e+b+
1511.55 16 0.0198 11 e+b+
1514.37 18 0.0142 11 e+b+
1519.5 3 0.0057 9 e+b+
1531.3 5 0.006 3 e+b+
1541.8 3 0.0057 11 e+b+
1545.9 3 0.0113 14 e+b+
1553.2 3 0.0057 9 e+b+
1556.8 2 0.0142 25 e+b+
1575.46 14 0.0170 9 e+b+
1579.3 5 0.006 3 e+b+
1579.75 6 0.065 3 e+b+
1584.8 2 0.0113 11 e+b+
1585.6 5 0.006 3 e+b+
1599.60 4 0.258 9 e+b+
1605.5 5 0.020 6 e+b+
1607.6 5 0.006 3 e+b+
1618.3 3 0.0113 11 e+b+
1626.3 5 0.006 3 e+b+
1630.3 2 0.0198 11 e+b+
1633.02 8 0.054 3 e+b+
1633.4 5 0.014 3 e+b+
1638.2 1 0.062 3 e+b+
1644.39 13 0.0255 11 e+b+
1649.33 12 0.0226 11 e+b+
1669.2 5 0.008 3 e+b+
1670.50 4 0.642 23 e+b+
1675.57 8 0.048 3 e+b+
1680.8 5 0.020 6 e+b+
1681.1 5 0.011 3 e+b+
1689.53 6 0.102 3 e+b+
1702.8 4 0.0085 9 e+b+
1705.90 18 0.0198 11 e+b+
1720.46 7 0.074 11 e+b+
1728.70 13 0.0255 11 e+b+
1733.3 5 0.0028 14 e+b+
1737.1 5 0.006 3 e+b+
1744.61 13 0.0198 20 e+b+
1746.7 5 0.0113 17 e+b+
1748.7 4 0.0113 17 e+b+
1759.43 21 0.0057 9 e+b+
1777.6 5 0.034 9 e+b+
1779.2 5 0.065 14 e+b+
1803.85 19 0.0142 9 e+b+
1811.0 2 0.0085 11 e+b+
1815.8 5 0.17 3 e+b+
1817.1 5 0.008 3 e+b+
1820.10 10 0.0113 9 e+b+
1825.4 3 0.0057 6 e+b+
1834.3 5 0.0028 14 e+b+
1837.5 4 0.0028 6 e+b+
1846.1 5 0.006 3 e+b+
1848.3 5 0.006 3 e+b+
1861.23 23 0.0057 11 e+b+
1869.2 5 0.025 6 e+b+
1869.87 9 0.088 6 e+b+
1890.6 4 0.0057 6 e+b+
1897.61 14 0.0170 9 e+b+
1902.6 2 0.0113 23 e+b+
1941.6 2 0.009 3 e+b+
1956.3 4 0.006 3 e+b+
1962.37 16 0.028 6 e+b+
1967.1 3 0.0113 9 e+b+
1974.3 3 0.0057 9 e+b+
1978.15 15 0.0057 14 e+b+
1995.76 17 0.0255 14 e+b+
2005.0 4 0.0028 6 e+b+
2007.9 4 0.0057 17 e+b+
2020.45 12 0.0283 14 e+b+
2026.28 13 0.0226 9 e+b+
2047.5 3 0.0028 3 e+b+
2064.98 19 0.0057 6 e+b+
2090.1 2 0.0170 11 e+b+
2097.4 2 0.0198 11 e+b+
2136.2 4 0.0048 6 e+b+
2209.6 5 0.0028 14 e+b+
2291.6 4 0.0057 9 e+b+

X-rays from 151Tb (17.609 h 1)

E (keV) I (%) Assignment
5,362 0.39 4 Gd Ll
6,026 1.03 7 Gd La2
6,050 0.143 11 Gd Lh
6,058 9.3 6 Gd La1
6,687 0.52 8 Gd Lb4
6,713 6.1 5 Gd Lb1
6,832 0.85 13 Gd Lb3
6,867 0.092 6 Gd Lb6
7,102 1.94 13 Gd Lb2
7,243 0.0159 10 Gd Lb5
7,790 1.04 8 Gd Lg1
7,930 0.0085 9 Gd Lg6
8,087 0.16 3 Gd Lg2
8,105 0.23 4 Gd Lg3
41,864 0.0106 4 Gd Ka3
42,309 34.6 10 Gd Ka2
42,996 62.4 19 Gd Ka1
48,551 6.19 18 Gd Kb3
48,695 12.0 4 Gd Kb1
49,038 0.189 9 Gd Kb5
49,959 4.00 12 Gd Kb2
50,099 1.55 7 Gd Kb4

Betas from 151Tb (17.609 h 1)

>Eb endpoint (keV) Ib (%) Decay mode
120,14 0.105 10 e
122 0.0028 3 e
143,26 0.048 6 e
164,5 0.014 2 e
173,5 0.33 4 e
240,68 0.028 2 e
247,3 0.014 2 e
308,3 0.025 5 e
318,05 0.037 5 e
321,2 0.027 5 e
344,1 0.028 4 e
350,81 0.0128 8 b+
359,06 0.125 15 e
385,1 0.0017 2 b+
391,81 0.187 12 e
410,1 0.011 3 e
432,47 0.051 5 e
436,28 0.057 4 e
448,91 0.23 2 e
455,41 0.0058 4 b+
458 0.0057 9 e
465,99 0.020 2 e
488,98 0.209 12 e
490,8 0.0051 3 b+
494,03 1.35 7 e
521,11 0.057 9 e
530,64 1.47 5 e
552,85 0.025 3 e
586,95 0.110 7 e
594,09 0.062 8 e
623,89 0.048 5 e
629,44 0.0011 5 b+
637,42 0.0010 b+
674,2 0.116 16 e
703,68 0.53 2 b+
712,28 0.150 16 e
728,1 0.50 2 e
731,17 0.012 4 b+
776,04 0.255 12 e
786,44 1.94 9 e
819,24 0.18 2 e
857,32 1.42 5 e
863,6 0.116 8 e
955,55 0.07 b+
967,38 0.13 3 b+
987,44 0.55 2 e
1012,3 0.020 15 e
1059,59 1.23 5 e
1071,62 0.77 12 e
1087,34 0.020 5 e
1108,42 0.71 3 e
1116,31 0.02 b+
1147,56 0.15 7 b+
1159,86 0.164 12 e
1191,05 0.76 4 e
1285,94 0.94 6 e
1365,85 0.031 13 e
1372,81 18.7 6 e
1407,1 1.69 18 e
1434,91 0.2 b+
1477,41 2.85 14 e
1512,8 1.88 8 e
1582,73 0.20 7 e
1651,44 0.16 6 e
1659,42 0.14 e
1725,68 48.4 18 e
1753,17 1.0 3 e
1977,55 2.1 e
1989,38 3.8 4 e
2138,31 0.30 e
2169,56 2.4 12 e
2456,91 6 e

Alphas from 151Tb (17.609 h 1)

Ea (keV) Ia (%)
3183 5 0.1
3409 5 100