Table of Isotopes decay data

WWW Table of Radioactive Isotopes

139	Cs
55	Cs	84

Half life:

9.27 m 5

Jp:

7/2+

S_n (keV):

5885 10

S_p (keV):

7876 37

Prod. mode:

Fission product

ENSDF citation:

NDS 57,337 (1989)

Literature cut-off date:

17-Apr-1989

Author(s):

T.W. Burrows

References since cut-off:

¹³⁹Cs decay from 1989-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)
b^-	100	4213 3

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	139CS B- DECAY
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ¹³⁹Cs (9.27 m 5)
Eg (keV)	Ig (%)	Decay mode

188.88 20	0.0091 17	b^-
196.51 18	0.0100 17	b^-
230.76 9	0.036 3	b^-
233.45 22	0.0108 25	b^-
249.89 18	0.0116 25	b^-
260.6 4	0.0083 25	b^-
267.6 3	0.011 3	b^-
312.31 21	0.0091 17	b^-
339.4 4	0.0066 25	b^-
357.01 16	0.0158 25	b^-
375.91 7	0.045 3	b^-
396.9 3	0.018 5	b^-
401.08 22	0.0116 25	b^-
404.61 25	0.0091 25	b^-
416.49 22	0.014 3	b^-
419.3 3	0.011 3	b^-
430.20 16	0.042 3	b^-
434.23 20	0.016 3	b^-
448.76 12	0.035 4	b^-
454.66 6	0.151 9	b^-
466.70 12	0.0232 25	b^-
505.4 3	0.011 3	b^-
515.86 7	0.060 5	b^-
528.20 10	0.042 14	b^-
531.98 4	0.247 13	b^-
538.35 24	0.015 3	b^-
542.71 15	0.027 3	b^-
558.1 3	0.010 3	b^-
567.72 5	0.042 9	b^-
567.72 5	0.114 9	b^-
594.02 5	0.081 5	b^-
598.17 18	0.0133 25	b^-
601.48 5	0.074 4	b^-
604.22 6	0.049 3	b^-
613.4 3	0.017 5	b^-
616.91 21	0.027 5	b^-
619.7 3	0.018 5	b^-
627.24 3	1.78 9	b^-
651.08 7	0.053 4	b^-
656.58 13	0.036 4	b^-
666.07 11	0.033 3	b^-
668.97 8	0.048 4	b^-
672.21 15	0.022 3	b^-
690.04 9	0.0249 25	b^-
714.90 6	0.082 5	b^-
728.38 9	0.046 4	b^-
735.68 9	0.074 6	b^-
737.60 12	0.050 5	b^-
770.56 19	0.019 3	b^-
773.5 3	0.011 3	b^-
788.3 4	0.010 3	b^-
793.28 7	0.087 6	b^-
798.01 14	0.030 4	b^-
806.32 21	0.0141 25	b^-
827.52 7	0.126 8	b^-
832.2 3	0.014 5	b^-
849.7 3	0.012 3	b^-
858.4 3	0.013 3	b^-
883.5 3	0.015 4	b^-
890.54 8	0.085 6	b^-
924.96 8	0.076 6	b^-
929.18 6	0.266 14	b^-
933.0 3	0.015 4	b^-
946.46 8	0.114 8	b^-
955.19 19	0.033 5	b^-
966.6 3	0.020 5	b^-
973.0 4	0.015 5	b^-
1040.93 22	0.037 3	b^-
1059.9 3	0.017 6	b^-
1063.7 4	0.012 6	b^-
1067.06 19	0.027 5	b^-
1076.94 17	0.030 6	b^-
1092.23 12	0.0481 25	b^-
1108.93 18	0.046 7	b^-
1110.9 4	0.022 6	b^-
1120.89 10	0.054 5	b^-
1159.30 17	0.031 4	b^-
1178.35 9	0.077 7	b^-
1185.21 17	0.034 5	b^-
1190.42 6	0.212 12	b^-
1216.14 19	0.024 4	b^-
1240.93 25	0.017 3	b^-
1249.41 22	0.017 3	b^-
1283.23 5	8.3 4	b^-
1306.09 11	0.122 11	b^-
1308.13 6	0.432 25	b^-
1316.4 4	0.015 4	b^-
1321.77 6	0.270 15	b^-
1344.4 4	0.014 4	b^-
1353.92 19	0.025 4	b^-
1386.85 24	0.022 4	b^-
1393.2 3	0.017 4	b^-
1410.58 7	0.173 10	b^-
1420.66 6	0.91 5	b^-
1462.43 19	0.042 7	b^-
1472.6 5	0.013 6	b^-
1500.5 3	0.017 4	b^-
1529.3 3	0.030 7	b^-
1531.2 3	0.025 7	b^-
1539.09 14	0.033 3	b^-
1546.63 13	0.035 4	b^-
1563.9 4	0.012 3	b^-
1564.63 13	0.035 4	b^-
1573.84 15	0.029 3	b^-
1591.73 11	0.061 5	b^-
1600.7 5	0.022 8	b^-
1620.74 6	0.481 25	b^-
1677.44 10	0.103 8	b^-
1680.72 6	0.70 3	b^-
1689.04 25	0.022 4	b^-
1698.66 7	0.204 12	b^-
1711.09 11	0.090 7	b^-
1713.6 4	0.018 5	b^-
1722.55 9	0.086 6	b^-
1737.9 3	0.035 3	b^-
1748.6 3	0.017 3	b^-
1768.19 21	0.0158 25	b^-
1793.63 17	0.025 3	b^-
1814.6 4	0.014 4	b^-
1818.5 3	0.017 4	b^-
1850.7 4	0.012 3	b^-
1877.45 7	0.393 21	b^-
1887.57 7	0.253 14	b^-
1904.50 7	0.142 8	b^-
1933.48 7	0.281 15	b^-
1949.26 14	0.038 4	b^-
1998.46 15	0.033 3	b^-
2003.4 3	0.017 3	b^-
2020.76 25	0.15 5	b^-
2022.1 5	0.07 5	b^-
2038.10 11	0.049 4	b^-
2079.33 19	0.048 6	b^-
2089.91 9	0.157 10	b^-
2100.13 17	0.054 7	b^-
2110.91 9	0.76 4	b^-
2156.94 13	0.047 5	b^-
2166.7 4	0.014 4	b^-
2173.98 7	0.231 12	b^-
2218.91 23	0.024 3	b^-
2229.9 3	0.016 3	b^-
2249.7 4	0.013 3	b^-
2269.5 3	0.017 3	b^-
2304.97 16	0.035 4	b^-
2330.2 6	0.012 5	b^-
2339.4 5	0.032 8	b^-
2349.92 6	0.64 3	b^-
2352.6 6	0.026 9	b^-
2375.95 11	0.080 7	b^-
2380.66 7	0.216 12	b^-
2418.9 4	0.014 3	b^-
2422.16 18	0.033 4	b^-
2524.47 22	0.032 5	b^-
2529.9 3	0.091 25	b^-
2531.84 7	0.48 3	b^-
2605.75 6	0.281 16	b^-
2649.32 7	0.193 11	b^-
2673.98 18	0.040 5	b^-
2774.04 13	0.034 3	b^-
2836.88 16	0.032 3	b^-
2847.63 8	0.115 7	b^-
2978.99 24	0.0149 17	b^-
2997.32 9	0.099 7	b^-
3047.29 16	0.034 3	b^-
3096.4 4	0.0100 25	b^-
3171.57 23	0.0208 25	b^-
3270.2 3	0.0116 17	b^-
3323.66 15	0.057 6	b^-
3364.23 11	0.091 7	b^-
3418.77 15	0.046 4	b^-
3464.34 9	0.125 8	b^-
3645.70 13	0.0315 25	b^-
3665.61 8	0.157 9	b^-
3724.20 15	0.0299 25	b^-
3769.16 11	0.051 3	b^-
3819.99 24	0.0125 17	b^-
3839.78 17	0.0208 17	b^-
3853.87 16	0.0224 17	b^-
3887.8 3	0.0091 17	b^-
3912.21 21	0.0141 17	b^-

Betas from ¹³⁹Cs (9.27 m 5)
Eb endpoint (keV)	Ib (%)	Decay mode

262.16	0.12 5	b^-
300.73	0.014 6	b^-
325.1	0.009 4	b^-
359.07	0.022 9	b^-
373.27	0.038 16	b^-
392.95	0.012 5	b^-
443.78	0.051 21	b^-
488.81	0.040 16	b^-
511.05	0.07 3	b^-
538.38	0.062 25	b^-
547.34	0.17 7	b^-
748.6	0.23 9	b^-
778.55	0.044 21	b^-
794.21	0.08 4	b^-
811.61	0.034 14	b^-
942.72	0.029 12	b^-
1215.68	0.17 7	b^-
1218.57	0.14 6	b^-
1365.25	0.16 7	b^-
1563.62	0.28 12	b^-
1607.26	0.55 23	b^-
1681.17	0.63 25	b^-
1683.31	0.14 6	b^-
1688.7	0.09 4	b^-
1751.33	0.14 6	b^-
1832.3	0.20 8	b^-
1837.2	0.17 7	b^-
1863.19	1.4 6	b^-
1908.12	0.11 5	b^-
1963.15	0.033 15	b^-
1983.21	0.08 4	b^-
1994.07	0.15 6	b^-
2039.05	0.33 13	b^-
2046.28	0.042 18	b^-
2054.13	0.055 23	b^-
2056	0.024 14	b^-
2102.15	0.9 4	b^-
2112.92	0.056 24	b^-
2123.11	0.12 5	b^-
2133.94	0.07 3	b^-
2175.03	0.22 9	b^-
2192.11	0.18 9	b^-
2214.75	0.13 5	b^-
2263.87	0.27 11	b^-
2279.52	0.30 12	b^-
2325.46	0.32 13	b^-
2335.62	0.43 17	b^-
2361.97	0.15 6	b^-
2395.22	0.028	b^-
2464.71	0.031 15	b^-
2514.31	0.13 5	b^-
2532.22	0.44 18	b^-
2592.27	0.47 19	b^-
2792.33	0.43 18	b^-
2904.79	0.26 11	b^-
2929.68	7 3	b^-
3130.96	0.08	b^-
3585.68	0.03	b^-
4213	82 7	b^-

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