| |
|
|---|
| Half life: | ~7.6 h | |
|---|
| Jp: | (8+) |
|---|
| Sn (keV): | 4.97E3 sy |
|---|
| Sp (keV): | 4.91E3 sy |
|---|
| | |
|---|
| ENSDF citation: | NDS 57,601 (1989) |
|---|
| Literature cut-off date: | 1-Dec-1988 |
|---|
| Author(s): | M.R. Schmorak |
|---|
| References since cut-off: |
256Es decay from 1988-98 (NSR)
|
|---|
| |
|---|
Decay properties:
|
|---|
| Mode | Branching (%) | Q-value (keV) |
References |
|---|
| b- | ~100 | 1.70E3 sy |
76HoZB |
| b-SF | 0.002 | |
|
| |
|---|
Most Recent ENSDF Data (12/2002)
|
|---|
| Mode | Data set name | Display data |
|---|
|
|---|
| TORI Data (1999)
Gammas from 256mEs (~7.6 h)
|
|---|
| Eg (keV) |
Ig (%) | Decay mode |
|---|
|
| 48.3 |
|
b- |
| 50.8 |
|
b- |
| 67 |
|
b- |
| 76.8 |
|
b- |
| 78 |
|
b- |
| 90.5 |
|
b- |
| 96.8 2 |
4.2 |
b- |
| 103.6 2 |
1.3 |
b- |
| 105.8 2 |
8 |
b- |
| 111.6 2 |
4.5 |
b- |
| 126.0 2 |
1.1 |
b- |
| 134.7 2 |
8 |
b- |
| 141.0 15 |
0.14 |
b- |
| 150.0 2 |
1.9 |
b- |
| 156.0 15 |
0.13 |
b- |
| 158.9 2 |
0.48 |
b- |
| 165.2 2 |
0.8 |
b- |
| 172.6 2 |
16 |
b- |
| 178.0 2 |
1.8 |
b- |
| 178.0 2 |
1.8 |
b- |
| 181.5 2 |
0.48 |
b- |
| 185.7 2 |
0.4 |
b- |
| 190.1 2 |
1.0 |
b- |
| 192.0 15 |
0.19 |
b- |
| 197.4 2 |
1.3 |
b- |
| 199.3 2 |
2.2 |
b- |
| 211 |
|
b- |
| 211.2 2 |
1.4 |
b- |
| 218.1 2 |
9 |
b- |
| 229.0 2 |
1.0 |
b- |
| 231.1 2 |
19 |
b- |
| 232.7 2 |
1.0 |
b- |
| 240.3 2 |
0.6 |
b- |
| 242.0 2 |
1.3 |
b- |
| 247.4 2 |
0.6 |
b- |
| 252.0 15 |
0.11 |
b- |
| 252.7 2 |
0.4 |
b- |
| 255.3 2 |
1.0 |
b- |
| 258.2 2 |
1.0 |
b- |
| 264.1 2 |
0.6 |
b- |
| 269.5 2 |
1.2 |
b- |
| 275.3 2 |
1.9 |
b- |
| 277.3 2 |
1.0 |
b- |
| 297.5 2 |
0.8 |
b- |
| 302.0 2 |
1.3 |
b- |
| 316.4 2 |
1.6 |
b- |
| 326.7 2 |
2.2 |
b- |
| 333.2 2 |
0.6 |
b- |
| 343.0 2 |
0.8 |
b- |
| 374.2 2 |
2.2 |
b- |
| 380.0 2 |
0.6 |
b- |
| 397.2 2 |
1.1 |
b- |
| 410.0 2 |
0.6 |
b- |
| 417.6 2 |
2.4 |
b- |
| 450.8 15 |
0.24 |
b- |
| 468.4 2 |
1.4 |
b- |
| 526.1 2 |
1.3 |
b- |
| 566.0 2 |
0.8 |
b- |
| 586.6 |
0.32 |
b- |
| 602.8 2 |
1.3 |
b- |
| 606.6 15 |
0.6 |
b- |
| 623.5 2 |
1.8 |
b- |
| 634.0 2 |
2.7 |
b- |
| 677.5 2 |
3.5 |
b- |
| 682.3 2 |
2.9 |
b- |
| 693.8 15 |
1.3 |
b- |
| 706.8 2 |
1.9 |
b- |
| 762.7 2 |
3.7 |
b- |
| 768.1 2 |
3.7 |
b- |
| 833.5 2 |
9 |
b- |
| 846.7 2 |
3.2 |
b- |
| 861.8 |
32 |
b- |
| 940.1 15 |
1.3 |
b- |
| 1051.5 2 |
4.2 |
b- |
| 1092.9 |
15 |
b- |
|
X-rays from 256mEs (~7.6 h)
|
|---|
| E (keV) |
I (%) | Assignment |
|---|
|
| 13.660 |
3.7 10 |
Fm Ll |
| 16.116 |
5.2 13 |
Fm La2 |
| 16.377 |
47 12 |
Fm La1 |
| 18.916 |
1.0 3 |
Fm Lb6 |
| 19.433 |
0.96 15 |
Fm Lh |
| 19.834 |
13 3 |
Fm Lb2 |
| 20.727 |
3.1 8 |
Fm Lb5 |
| 20.798 |
7 4 |
Fm Lb4 |
| 21.889 |
34 6 |
Fm Lb1 |
| 22.169 |
5.2 25 |
Fm Lb3 |
| 25.574 |
8.9 14 |
Fm Lg1 |
| 25.825 |
3.3 16 |
Fm Lg2 |
| 26.195 |
2.5 12 |
Fm Lg3 |
| 26.492 |
1.9 3 |
Fm Lg6 |
| 114.352 |
0.16 4 |
Fm Ka3 |
| 115.285 |
26 6 |
Fm Ka2 |
| 121.058 |
40 9 |
Fm Ka1 |
| 135.150 |
5.1 11 |
Fm Kb3 |
| 136.521 |
9.6 20 |
Fm Kb1 |
| 137.304 |
0.41 9 |
Fm Kb5 |
| 140.362 |
3.9 8 |
Fm Kb2 |
| 140.893 |
1.6 3 |
Fm Kb4 |
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