| |
|
| Half life: | 155 s 4 | |
| Jp: | 3/2(+) |
| Sn (keV): | 11327 16 |
| Sp (keV): | 2602 46 |
| Prod. mode: |
Charged particle reaction
|
| | |
| ENSDF citation: | NDS 64,323 (1991) |
| Literature cut-off date: | 1-Aug-1991 |
| Author(s): | T. Tamura, H. Iimura, K. Miyano and S. Ohya |
| Update: | Unknown, J. Tuli |
| References since cut-off: |
121Cs decay from 1998-98 (NSR)
|
| |
Decay properties: |
| Mode | Branching (%) | Q-value (keV) |
References |
| e+b+ | 100 | 5400 20 |
91Ge02 |
| |
Most Recent ENSDF Data (12/2002) |
| Mode | Data set name | Display data |
|
| TORI Data (1999)
Gammas from 121Cs (155 s 4)
|
| Eg (keV) |
Ig (%) | Decay mode |
|
| 59.3 5 |
0.13 3 |
e+b+ |
| 85.9 3 |
2.06 13 |
e+b+ |
| 108.0 2 |
0.67 10 |
e+b+ |
| 153.9 2 |
15.2 5 |
e+b+ |
| 159.7 2 |
1.66 10 |
e+b+ |
| 179.4 2 |
2.7 3 |
e+b+ |
| 196.0 2 |
2.46 23 |
e+b+ |
| 210.1 2 |
0.73 7 |
e+b+ |
| 239.6 2 |
7.7 5 |
e+b+ |
| 270.2 2 |
1.66 13 |
e+b+ |
| 273.2 3 |
0.17 3 |
e+b+ |
| 295.8 2 |
1.43 10 |
e+b+ |
| 326.8 2 |
0.37 10 |
e+b+ |
| 337.2 3 |
0.23 10 |
e+b+ |
| 343.2 4 |
0.30 7 |
e+b+ |
| 355.9 2 |
2.33 13 |
e+b+ |
| 361.7 3 |
0.20 7 |
e+b+ |
| 373.8 3 |
0.37 7 |
e+b+ |
| 380.1 3 |
0.27 7 |
e+b+ |
| 393.2 3 |
0.23 10 |
e+b+ |
| 398.8 3 |
0.47 7 |
e+b+ |
| 427.1 2 |
3.63 23 |
e+b+ |
| 445.4 3 |
0.13 3 |
e+b+ |
| 450.1 2 |
0.33 10 |
e+b+ |
| 456.6 5 |
0.33 13 |
e+b+ |
| 456.6 3 |
0.70 10 |
e+b+ |
| 466.0 3 |
0.40 10 |
e+b+ |
| 481.6 3 |
0.67 13 |
e+b+ |
| 486.1 3 |
0.50 20 |
e+b+ |
| 497.6 2 |
0.97 17 |
e+b+ |
| 542.6 2 |
0.60 10 |
e+b+ |
| 553.0 3 |
1.20 17 |
e+b+ |
| 558.3 4 |
0.33 20 |
e+b+ |
| 564.5 5 |
0.27 10 |
e+b+ |
| 619.9 2 |
1.13 17 |
e+b+ |
| 646.8 3 |
0.40 10 |
e+b+ |
| 661.1 2 |
1.17 13 |
e+b+ |
| 674.8 2 |
0.23 7 |
e+b+ |
| 682.3 3 |
0.23 10 |
e+b+ |
| 690.5 2 |
0.27 13 |
e+b+ |
| 696.5 2 |
0.60 13 |
e+b+ |
| 797.9 4 |
0.27 7 |
e+b+ |
| 841.9 7 |
0.23 7 |
e+b+ |
| 850.5 3 |
0.33 10 |
e+b+ |
| 867.2 4 |
0.20 7 |
e+b+ |
| 881.2 3 |
0.17 7 |
e+b+ |
| 891.6 3 |
0.23 7 |
e+b+ |
| 900.2 3 |
0.27 7 |
e+b+ |
| 905.4 4 |
0.13 7 |
e+b+ |
| 914.3 3 |
0.33 7 |
e+b+ |
| 922.6 3 |
0.23 13 |
e+b+ |
| 936.6 3 |
0.40 7 |
e+b+ |
| 949.2 3 |
0.27 7 |
e+b+ |
| 986.3 4 |
0.20 10 |
e+b+ |
| 1060.3 4 |
0.27 10 |
e+b+ |
| 1076.7 4 |
0.27 10 |
e+b+ |
| 1115.0 8 |
0.23 13 |
e+b+ |
| 1140.3 4 |
1.00 17 |
e+b+ |
| 1179.8 5 |
0.17 7 |
e+b+ |
| 1255.2 5 |
0.20 10 |
e+b+ |
| 1276.4 6 |
0.33 10 |
e+b+ |
| 1396.2 5 |
0.23 10 |
e+b+ |
| 1416.5 5 |
0.33 10 |
e+b+ |
| 1432.7 5 |
1.33 20 |
e+b+ |
| 1458.0 6 |
0.27 10 |
e+b+ |
| 1497.7 6 |
0.27 10 |
e+b+ |
| 1511.1 6 |
0.27 10 |
e+b+ |
|
X-rays from 121Cs (155 s 4)
|
| E (keV) |
I (%) | Assignment |
|
| 3.633 |
0.032 10 |
Xe Ll |
| 3.955 |
0.015 5 |
Xe Lh |
| 4.093 |
0.09 3 |
Xe La2 |
| 4.105 |
0.80 24 |
Xe La1 |
| 4.414 |
0.50 15 |
Xe Lb1 |
| 4.451 |
0.044 14 |
Xe Lb4 |
| 4.512 |
0.073 24 |
Xe Lb3 |
| 4.569 |
0.0063 19 |
Xe Lb6 |
| 4.714 |
0.16 5 |
Xe Lb2 |
| 5.034 |
0.071 21 |
Xe Lg1 |
| 5.307 |
0.012 4 |
Xe Lg2 |
| 5.307 |
0.017 6 |
Xe Lg3 |
| 29.112 |
0.00050 13 |
Xe Ka3 |
| 29.461 |
4.9 13 |
Xe Ka2 |
| 29.782 |
9.1 24 |
Xe Ka1 |
| 33.562 |
0.84 22 |
Xe Kb3 |
| 33.624 |
1.6 4 |
Xe Kb1 |
| 33.881 |
0.016 4 |
Xe Kb5 |
| 34.419 |
0.49 13 |
Xe Kb2 |
| 34.496 |
0.095 25 |
Xe Kb4 |
Betas from 121Cs (155 s 4)
|
| Eb endpoint (keV) |
Ib (%) | Decay mode |
|
| 3260.4 |
0.48 14 |
b+ |
| 3431.8 |
0.19 9 |
b+ |
| 3640.56 |
1.1 3 |
b+ |
| 3681.5 |
1.62 17 |
b+ |
| 3695.59 |
0.94 22 |
b+ |
| 3716.94 |
2.2 3 |
b+ |
| 3758.09 |
1.54 18 |
b+ |
| 3824.97 |
0.3 3 |
b+ |
| 3880.8 |
0.26 6 |
b+ |
| 3928.14 |
3.86 20 |
b+ |
| 3950.87 |
3.38 21 |
b+ |
| 4022.23 |
3.54 19 |
b+ |
| 4138.25 |
9.2 7 |
b+ |
| 4224.05 |
11.7 8 |
b+ |
| 4282.4 |
0.12 7 |
e |
| 4378 |
48.9 10 |
b+ |
| 4453.8 |
0.04 3 |
e |
| 4662.56 |
0.2 1 |
e |
| 4703.5 |
0.28 13 |
e |
| 4717.59 |
0.16 8 |
e |
| 4738.94 |
0.38 18 |
e |
| 4780.09 |
0.26 12 |
e |
| 4846.97 |
0.05 5 |
e |
| 4902.8 |
0.039 20 |
e |
| 4950.14 |
0.56 25 |
e |
| 4972.87 |
0.48 22 |
e |
| 5044.23 |
0.48 22 |
e |
| 5160.25 |
1.1 5 |
e |
| 5246.05 |
1.4 6 |
e |
| 5400 |
5.2 23 |
e |
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