| |
|
|---|
| Half life: | 2.91 m 8 | |
|---|
| E(level): | 79.9 keV |
|---|
| Jp: | 6- |
|---|
| Sn (keV): | 4413 9 |
|---|
| Sp (keV): | 7804 12 |
|---|
| Prod. mode: |
Fission product
Fast neutron activation
|
|---|
| | |
|---|
| ENSDF citation: | NDS 74,349 (1995) |
|---|
| Literature cut-off date: | 1-Oct-1994 |
|---|
| Author(s): | J.K. Tuli |
|---|
| References since cut-off: |
138Cs decay from 1994-98 (NSR)
|
|---|
| |
|---|
Decay properties:
|
|---|
| Mode | Branching (%) | Q-value (keV) |
|
|---|
| b- | 19 2 | 5374 9 |
|
| IT | 81 2 | |
|
| |
|---|
Most Recent ENSDF Data (12/2002)
|
|---|
| Mode | Data set name | Display data |
|---|
|
|---|
| TORI Data (1999)
Gammas from 138mCs (2.91 m 8)
|
|---|
| Eg (keV) |
Ig (%) | Decay mode |
|---|
|
| 79.9 3 |
0.37 |
IT |
| 107.7 1 |
0.19 10 |
b- |
| 112.60 13 |
1.52 19 |
b- |
| 191.96 6 |
15.4 6 |
b- |
| 212.32 8 |
0.53 10 |
b- |
| 324.90 8 |
1.18 19 |
b- |
| 408.98 6 |
~0.09 |
b- |
| 462.796 5 |
18.6 10 |
b- |
| 516.74 12 |
0.61 19 |
b- |
| 871.80 8 |
~0.15 |
b- |
| 1435.795 10 |
19 |
b- |
|
X-rays from 138mCs (2.91 m 8)
|
|---|
| E (keV) |
I (%) | Assignment |
|---|
|
| 3.795 |
0.114 15 |
Cs Ll |
| 3.954 |
0.0070 10 |
Ba Ll |
| 4.142 |
0.041 4 |
Cs Lh |
| 4.272 |
0.31 4 |
Cs La2 |
| 4.286 |
2.8 3 |
Cs La1 |
| 4.331 |
0.0032 4 |
Ba Lh |
| 4.451 |
0.0193 23 |
Ba La2 |
| 4.466 |
0.174 20 |
Ba La1 |
| 4.620 |
1.39 14 |
Cs Lb1 |
| 4.649 |
0.22 5 |
Cs Lb4 |
| 4.717 |
0.38 8 |
Cs Lb3 |
| 4.781 |
0.0229 25 |
Cs Lb6 |
| 4.827 |
0.114 13 |
Ba Lb1 |
| 4.852 |
0.0088 18 |
Ba Lb4 |
| 4.927 |
0.015 3 |
Ba Lb3 |
| 4.934 |
0.57 6 |
Cs Lb2 |
| 4.994 |
0.00144 17 |
Ba Lb6 |
| 5.156 |
0.036 4 |
Ba Lb2 |
| 5.281 |
0.199 21 |
Cs Lg1 |
| 5.531 |
0.0165 19 |
Ba Lg1 |
| 5.542 |
0.061 13 |
Cs Lg2 |
| 5.553 |
0.089 19 |
Cs Lg3 |
| 5.797 |
0.0025 5 |
Ba Lg2 |
| 5.809 |
0.0036 8 |
Ba Lg3 |
| 30.270 |
0.00131 4 |
Cs Ka3 |
| 30.625 |
11.39 25 |
Cs Ka2 |
| 30.973 |
21.0 5 |
Cs Ka1 |
| 31.452 |
1.23E-04 7 |
Ba Ka3 |
| 31.817 |
0.96 5 |
Ba Ka2 |
| 32.194 |
1.76 9 |
Ba Ka1 |
| 34.920 |
1.95 4 |
Cs Kb3 |
| 34.987 |
3.77 8 |
Cs Kb1 |
| 35.252 |
0.0400 16 |
Cs Kb5 |
| 35.818 |
1.17 3 |
Cs Kb2 |
| 35.907 |
0.242 10 |
Cs Kb4 |
| 36.304 |
0.165 8 |
Ba Kb3 |
| 36.378 |
0.319 16 |
Ba Kb1 |
| 36.652 |
0.00370 22 |
Ba Kb5 |
| 37.255 |
0.101 5 |
Ba Kb2 |
| 37.349 |
0.0226 14 |
Ba Kb4 |
Betas from 138mCs (2.91 m 8)
|
|---|
| Eb endpoint (keV) |
Ib (%) | Decay mode |
|---|
|
| 3038.49 |
2.8 7 |
b- |
| 3250.8 |
2.0 5 |
b- |
| 3363.36 |
15 3 |
b- |
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