| |
|
|---|
| Half life: | 275.7 d 5 | |
|---|
| Jp: | (7+) |
|---|
| Sn (keV): | 5092 5 |
|---|
| Sp (keV): | 4598 7 |
|---|
| Prod. mode: |
Thermal neutron activation
|
|---|
| | |
|---|
| ENSDF citation: | NDS 57,590 (1989) |
|---|
| Literature cut-off date: | 1-Dec-1988 |
|---|
| Author(s): | M.R. Schmorak |
|---|
| Update: | Unknown, J. Tuli |
|---|
| References since cut-off: |
254Es decay from 1998-98 (NSR)
|
|---|
| |
|---|
Decay properties:
|
|---|
| Mode | Branching (%) | Q-value (keV) |
References |
|---|
| a | 100 | 6615.7 15 |
73Ah04 |
| e | <1E-4 | 652 13 |
|
| b- | 1.74E-6 8 | 1088 3 |
85Ok04 |
| SF | <3E-6 | |
|
| |
|---|
Most Recent ENSDF Data (12/2002)
|
|---|
| Mode | Data set name | Display data |
|---|
|
|---|
| TORI Data (1999)
Gammas from 254Es (275.7 d 5)
|
|---|
| Eg (keV) |
Ig (%) | Decay mode |
|---|
|
| 1.11 70 |
|
a |
| 8.1 2 |
|
a |
| 34.4 1 |
|
a |
| 35.5 1 |
|
a |
| 42.6 1 |
|
a |
| 63.0 20 |
2.0 2 |
a |
| 69.7 1 |
|
a |
| 70.4 1 |
|
a |
| 80.8 1 |
|
a |
| 85.1 1 |
|
a |
| 94.9 |
|
a |
| 150 2 |
0.020 3 |
a |
| 233 2 |
0.008 1 |
a |
| 249 2 |
0.025 4 |
a |
| 264 2 |
0.05 1 |
a |
| 278 2 |
0.03 1 |
a |
| 285 |
0.01 |
a |
| 304 2 |
0.07 1 |
a |
| 316 2 |
0.15 2 |
a |
| 342 2 |
0.009 2 |
a |
| 348 2 |
0.007 1 |
a |
| 377 2 |
0.015 2 |
a |
| 385 2 |
0.05 1 |
a |
|
X-rays from 254Es (275.7 d 5)
|
|---|
| E (keV) |
I (%) | Assignment |
|---|
|
| 12.890 |
2.6 12 |
Bk Ll |
| 15.082 |
3.8 18 |
Bk La2 |
| 15.308 |
34 16 |
Bk La1 |
| 17.687 |
0.7 3 |
Bk Lb6 |
| 17.826 |
0.6 4 |
Bk Lh |
| 18.508 |
9 4 |
Bk Lb2 |
| 19.118 |
3.9 8 |
Bk Lb4 |
| 19.311 |
2.2 10 |
Bk Lb5 |
| 20.018 |
20 15 |
Bk Lb1 |
| 20.280 |
3.0 6 |
Bk Lb3 |
| 23.416 |
5 4 |
Bk Lg1 |
| 23.698 |
1.8 4 |
Bk Lg2 |
| 24.007 |
1.4 3 |
Bk Lg3 |
| 24.241 |
1.1 8 |
Bk Lg6 |
| 106.300 |
0.00056 22 |
Bk Ka3 |
| 107.185 |
0.11 4 |
Bk Ka2 |
| 112.121 |
0.17 7 |
Bk Ka1 |
| 125.418 |
0.022 9 |
Bk Kb3 |
| 126.580 |
0.041 16 |
Bk Kb1 |
| 127.316 |
0.0017 7 |
Bk Kb5 |
| 130.152 |
0.016 6 |
Bk Kb2 |
| 130.630 |
0.0064 25 |
Bk Kb4 |
Betas from 254Es (275.7 d 5)
|
|---|
| Eb endpoint (keV) |
Ib (%) | Decay mode |
|---|
|
| 154 |
3.03E-10 |
b- |
Alphas from 254Es (275.7 d 5)
|
|---|
| Ea (keV) |
Ia (%) |
|---|
|
| 6000 20 |
~0.03 |
| 6048 5 |
0.16 |
| 6105 2 |
0.34 2 |
| 6177 |
~0.02 |
| 6184 |
0.06 3 |
| 6194 2 |
0.04 2 |
| 6258 |
<0.02 |
| 6266 2 |
0.22 4 |
| 6275 |
0.14 2 |
| 6324 2 |
0.04 1 |
| 6347 2 |
0.75 5 |
| 6358.6 20 |
2.6 3 |
| 6378 |
<0.01 |
| 6383 |
<0.1 |
| 6415.8 20 |
1.8 1 |
| 6428.8 20 |
93.1 10 |
| 6435 |
~0.03 |
| 6476 |
0.23 4 |
| 6478 |
<0.05 |
| 6512 |
~0.0046 |
|
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