Table of Isotopes decay data

WWW Table of Radioactive Isotopes

142	Cs
55	Cs	87

Half life:

1.70 s 2

Jp:

0-

S_n (keV):

4114 14

S_p (keV):

9482 91

Prod. mode:

Fission product

ENSDF citation:

NDS 63,647 (1991)

Literature cut-off date:

31-Jul-1989

Author(s):

L.K. Peker

References since cut-off:

¹⁴²Cs decay from 1989-98 (NSR)


Decay properties:
Mode	Branching (%)	Q-value (keV)
b^-	100	7307 10
b^-n	0.091 3

Most Recent ENSDF Data (12/2002)
Mode	Data set name	Display data
b^-	142CS B- DECAY
	Tables:
	ENSDF data:
	Java applets:

TORI Data (1999) Gammas from ¹⁴²Cs (1.70 s 2)
Eg (keV)	Ig (%)	Decay mode

100.6 5		b^-
209.10 52	0.136 14	b^-
325.0 5	0.071 22	b^-
359.598 14	27.2 5	b^-
401.4 6	0.054 19	b^-
457.26 15	0.109 11	b^-
475.17 9	0.299 11	b^-
510.71 16	2.12 24	b^-
608.3 3	0.33 6	b^-
858.30 15	0.25 3	b^-
932.82 20	0.54 8	b^-
966.89 7	~0.15	b^-
966.89 7	9.0 8	b^-
985.8 8	0.37 5	b^-
1015.27 13	0.190 14	b^-
1064.54 7	0.898 19	b^-
1099.1 9	0.14 8	b^-
1101.14 20	0.27 8	b^-
1118.6 5	0.11 4	b^-
1137.0 3	0.18 3	b^-
1175.93 6	4.16 8	b^-
1192.2 4	0.41 6	b^-
1243.25 10	0.49 4	b^-
1280.00 10	1.99 11	b^-
1326.46 7	12.92 19	b^-
1333.4 3	0.52 8	b^-
1421.91 13	0.73 6	b^-
1423.92 11	1.03 5	b^-
1559.1 2	0.44 4	b^-
1610.7 2	0.34 4	b^-
1768.3 3	0.52 3	b^-
1774.6 4		b^-
1818.00 28	0.33 4	b^-
1899.08 15	0.79 6	b^-
1915.7 4	0.16 3	b^-
1935.19 37	0.34 4	b^-
1956.76 40	0.25 4	b^-
1961.1 5	0.11 4	b^-
1982.14 16	1.20 8	b^-
2051.0 7	0.08 3	b^-
2056.1 5	0.13 3	b^-
2246.13 40	0.38 4	b^-
2254.0 3	0.26 4	b^-
2341.7 5	0.19 3	b^-
2351.3 5	0.13 3	b^-
2393.7 2	0.05 4	b^-
2397.75 39	0.72 6	b^-
2415.1 6	0.07 3	b^-
2508.9 7	0.11 4	b^-
2522.9 4	0.24 4	b^-
2575.9 6	0.10 3	b^-
2613.2 4	0.20 3	b^-
2656.0 6	0.11 3	b^-
2677.2 10	0.06 3	b^-
2725.77 24	0.44 4	b^-
2757.3 3	0.34 4	b^-
2784.6 5	0.13 3	b^-
2796.6 6	0.09 3	b^-
2839.6 8	0.07 3	b^-
2882.5 3	0.37 3	b^-
2923.5 3	0.47 4	b^-
2938.6 5	0.12 3	b^-
2988.6 7	0.09 3	b^-
3079.3 17	0.04 3	b^-
3144.2 5	0.15 3	b^-
3167.7 7	0.11 3	b^-
3261.6 5	0.17 3	b^-
3283.4 3	0.56 5	b^-
3369.2 10	0.057 24	b^-
3426.5 4	0.24 3	b^-
3573.3 3	0.63 5	b^-
3661.5 8	0.08 3	b^-
3786.3 4	0.19 3	b^-
3797.5 4	0.21 3	b^-
3835.0 4	0.25 3	b^-
3870.5 5	0.19 3	b^-
3897.9 7	0.092 24	b^-
3931.7 4	0.26 3	b^-
4009.3 7	0.071 19	b^-
4028.3 5	0.136 19	b^-
4037.1 5	0.101 19	b^-
4085.7 6	0.087 19	b^-
4145.7 11	0.046 22	b^-
4178.6 7	0.090 22	b^-
4198.3 10	0.049 19	b^-
4205.5 7	0.073 19	b^-
4217.5 11	0.041 19	b^-
4238.2 4	0.212 24	b^-
4250.6 8	0.071 19	b^-
4277.4 5	0.139 22	b^-
4362.9 16	0.027 19	b^-
4369.3 4	0.29 3	b^-
4418.2 4	0.234 24	b^-
4494.2 6	0.084 16	b^-
4537.2 10	0.035 14	b^-
4549.6 8	0.049 14	b^-
4564.8 7	0.065 14	b^-
4578.2 7	0.063 16	b^-
4609.8 7	0.052 14	b^-
4647.8 5	0.098 14	b^-
4670.2 13	0.019 8	b^-
4681.8 9	0.027 8	b^-
4694.7 7	0.038 11	b^-
4730.4 11	0.016 7	b^-
4738.4 11	0.016 7	b^-
4812.2 8	0.026 7	b^-
4862.7 13	0.017 7	b^-
4891.1 8	0.038 8	b^-
4896.8 10	0.027 8	b^-
4937.1 12	0.013 5	b^-
4955.5 14	0.011 5	b^-
4993.6 13	0.012 5	b^-
5006.2 9	0.021 5	b^-
5028.2 12	0.013 5	b^-
5374.13 14	0.011 4	b^-

X-rays from ¹⁴²Cs (1.70 s 2)
E (keV)	I (%)	Assignment

3.954	0.00116 16	Ba L_l
4.331	0.00053 6	Ba L_h
4.451	0.0032 4	Ba L_a2
4.466	0.029 3	Ba L_a1
4.827	0.0186 20	Ba L_b1
4.852	0.0016 3	Ba L_b4
4.927	0.0027 5	Ba L_b3
4.994	2.4E-04 3	Ba L_b6
5.156	0.0060 7	Ba L_b2
5.531	0.0027 3	Ba L_g1
5.797	0.00045 9	Ba L_g2
5.809	0.00064 13	Ba L_g3
31.452	2.14E-05 9	Ba K_a3
31.817	0.166 5	Ba K_a2
32.194	0.306 10	Ba K_a1
36.304	0.0286 9	Ba K_b3
36.378	0.0553 18	Ba K_b1
36.652	0.00064 3	Ba K_b5
37.255	0.0175 6	Ba K_b2
37.349	0.00391 19	Ba K_b4

Betas from ¹⁴²Cs (1.70 s 2)
Eb endpoint (keV)	Ib (%)	Decay mode

1107	0.09	b^-
2026.6	0.8 1	b^-
2937.7	0.4 1	b^-
3733.92	1.0 1	b^-
4023.71	1.3 2	b^-
4045.3	0.5 1	b^-
4162.61	0.6 1	b^-
4424.41	0.17 12	b^-
4737.22	0.5 1	b^-
4965.25	2.3 3	b^-
5179.1	0.52 6	b^-
5525.5	1.3 2	b^-
5614	0.5 10	b^-
5667.4	2.0 2	b^-
5771.47	3.9 4	b^-
5882.9	1.9 2	b^-
5980.52	21 2	b^-
6947.4	4.5 7	b^-
7307	56 5	b^-

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