| |
|
| Half life: | 5.30 h 8 | |
| Jp: | (9/2-) |
| Sn (keV): | 6160 14 |
| Sp (keV): | 4.58E3 sy |
| | |
| ENSDF citation: | NDS 59,545 (1990) |
| Literature cut-off date: | 30-Apr-1989 |
| Author(s): | M.R. Schmorak |
| References since cut-off: |
251Fm decay from 1989-98 (NSR)
|
| |
Decay properties: |
| Mode | Branching (%) | Q-value (keV) |
References |
| e | 98.20 13 | 1474 7 |
78Ah02 |
| a | 1.80 13 | 7425.1 20 |
|
| |
Most Recent ENSDF Data (12/2002) |
| Mode | Data set name | Display data |
|
| TORI Data (1999)
Gammas from 251Fm (5.30 h 8)
|
| Eg (keV) |
Ig (%) | Decay mode |
|
| 8.3(calc) |
|
e+b+ |
| 31.7(calc) |
|
e+b+ |
| 44.0 4 |
|
a |
| 44.4(calc) |
|
e+b+ |
| 47.48 6 |
0.118 10 |
e+b+ |
| 51.4 4 |
|
a |
| 55.0 2 |
0.0104 14 |
a |
| 58.2(calc) |
|
e+b+ |
| 67.1 2 |
0.0050 9 |
a |
| 68.8(calc) |
|
e+b+ |
| 80.2(calc) |
|
e+b+ |
| 122.1 2 |
0.0050 9 |
a |
| 281.4 1 |
0.071 5 |
e+b+ |
| 307.4 1 |
0.035 3 |
e+b+ |
| 331.0 3 |
0.0063 13 |
a |
| 349.9 1 |
0.82 4 |
e+b+ |
| 358.3 1 |
0.315 20 |
a |
| 372.2 4 |
0.0045 9 |
a |
| 375.8 1 |
0.363 20 |
e+b+ |
| 383.2 3 |
0.0196 20 |
a |
| 385.3 2 |
0.030 3 |
e+b+ |
| 405.6 1 |
0.99 5 |
e+b+ |
| 410.0 3 |
0.0090 13 |
a |
| 425.4 1 |
0.95 5 |
a |
| 429.7 1 |
0.082 7 |
e+b+ |
| 453.1 1 |
1.45 8 |
e+b+ |
| 461.0 1 |
0.090 6 |
e+b+ |
| 461.4 |
<0.017 |
e+b+ |
| 477.0 3 |
0.0097 14 |
a |
| 480.4 1 |
0.392 20 |
a |
| 487.1 2 |
0.0108 20 |
e+b+ |
| 496 1 |
~0.0014 |
a |
| 616 1 |
~0.0009 |
a |
| 623.0 8 |
0.0013 4 |
a |
| 664.0 3 |
0.017 3 |
e+b+ |
| 678.0 8 |
0.0047 11 |
a |
| 683 1 |
~0.0007 |
a |
| 694.5 3 |
0.015 3 |
e+b+ |
| 706.3 2 |
0.025 3 |
e+b+ |
| 722.1 2 |
0.081 7 |
e+b+ |
| 769.6 1 |
0.393 20 |
e+b+ |
| 775.0 1 |
~0.041 |
e+b+ |
| 775.0 1 |
~0.09 |
e+b+ |
| 786.3 5 |
0.0079 20 |
e+b+ |
| 796.6 5 |
0.0118 20 |
e+b+ |
| 826.8 5 |
~0.0049 |
e+b+ |
| 833.3 1 |
0.63 4 |
e+b+ |
| 843.4 1 |
0.118 10 |
e+b+ |
| 858.5 5 |
~0.0049 |
e+b+ |
| 880.8 1 |
2.19 11 |
e+b+ |
| 901.6 1 |
0.128 10 |
e+b+ |
| 1056.2 4 |
0.0059 10 |
e+b+ |
| 1124.9 2 |
0.027 3 |
e+b+ |
| 1151.0 2 |
0.0147 20 |
e+b+ |
| 1183.0 2 |
0.073 5 |
e+b+ |
| 1193.0 2 |
0.0088 10 |
e+b+ |
| 1209.1 2 |
0.034 3 |
e+b+ |
| 1230.6 2 |
0.137 10 |
e+b+ |
| 1242.8 4 |
0.0051 5 |
e+b+ |
| 1245.6 4 |
0.0061 6 |
e+b+ |
| 1251.2 2 |
0.0187 16 |
e+b+ |
| 1256.6 2 |
0.064 5 |
e+b+ |
| 1279.0 4 |
0.0035 4 |
e+b+ |
| 1293.0 3 |
0.037 3 |
e+b+ |
| 1298.8 3 |
0.041 3 |
e+b+ |
| 1301.2 3 |
0.0098 10 |
e+b+ |
| 1348.6 3 |
0.0032 3 |
e+b+ |
|
X-rays from 251Fm (5.30 h 8)
|
| E (keV) |
I (%) | Assignment |
|
| 13.146 |
0.019 4 |
Cf Ll |
| 13.403 |
1.54 18 |
Es Ll |
| 15.423 |
0.028 5 |
Cf La2 |
| 15.660 |
0.25 4 |
Cf La1 |
| 15.767 |
2.22 17 |
Es La2 |
| 16.016 |
19.9 16 |
Es La1 |
| 18.094 |
0.0052 9 |
Cf Lb6 |
| 18.347 |
0.0049 9 |
Cf Lh |
| 18.501 |
0.42 3 |
Es Lb6 |
| 18.884 |
0.28 4 |
Es Lh |
| 18.946 |
0.067 12 |
Cf Lb2 |
| 19.387 |
5.4 4 |
Es Lb2 |
| 19.665 |
0.044 10 |
Cf Lb4 |
| 19.778 |
0.016 3 |
Cf Lb5 |
| 20.224 |
2.7 5 |
Es Lb4 |
| 20.250 |
1.30 10 |
Es Lb5 |
| 20.624 |
0.18 3 |
Cf Lb1 |
| 20.894 |
0.033 7 |
Cf Lb3 |
| 21.248 |
9.9 13 |
Es Lb1 |
| 21.523 |
1.9 3 |
Es Lb3 |
| 24.117 |
0.045 9 |
Cf Lg1 |
| 24.390 |
0.020 5 |
Cf Lg2 |
| 24.718 |
0.016 4 |
Cf Lg3 |
| 24.836 |
2.5 3 |
Es Lg1 |
| 24.971 |
0.0096 20 |
Cf Lg6 |
| 25.099 |
1.20 22 |
Es Lg2 |
| 25.446 |
0.91 17 |
Es Lg3 |
| 25.723 |
0.54 8 |
Es Lg6 |
| 108.929 |
9.0E-05 9 |
Cf Ka3 |
| 109.831 |
0.0165 16 |
Cf Ka2 |
| 111.614 |
0.124 5 |
Es Ka3 |
| 112.531 |
21.1 6 |
Es Ka2 |
| 115.032 |
0.026 3 |
Cf Ka1 |
| 118.012 |
32.7 9 |
Es Ka1 |
| 128.594 |
0.0032 3 |
Cf Kb3 |
| 129.823 |
0.0061 6 |
Cf Kb1 |
| 130.574 |
0.00026 3 |
Cf Kb5 |
| 131.838 |
4.16 12 |
Es Kb3 |
| 133.137 |
7.81 22 |
Es Kb1 |
| 133.483 |
0.00242 24 |
Cf Kb2 |
| 133.904 |
0.331 15 |
Es Kb5 |
| 133.979 |
0.00096 10 |
Cf Kb4 |
| 136.886 |
3.11 9 |
Es Kb2 |
| 137.399 |
1.24 6 |
Es Kb4 |
Betas from 251Fm (5.30 h 8)
|
| Eb endpoint (keV) |
Ib (%) | Decay mode |
|
| 117.1 |
0.0196 20 |
e |
| 167 |
0.069 10 |
e |
| 172.7 |
0.042 3 |
e |
| 209.1 |
0.96 5 |
e |
| 235.1 |
2.46 20 |
e |
| 443.7 |
0.0105 5 |
b+ |
| 584.94 |
0.35 17 |
e |
| 696.1 |
0.40 3 |
e |
| 1012.6 |
2.65 10 |
e |
| 1418.2 |
12 3 |
e |
| 1465.7 |
78 3 |
e |
Alphas from 251Fm (5.30 h 8)
|
| Ea (keV) |
Ia (%) |
|
| 6580 3 |
0.26 4 |
| 6639 3 |
0.56 6 |
| 6682 4 |
0.07 3 |
| 6721 3 |
0.44 4 |
| 6763 3 |
0.38 6 |
| 6783 2 |
4.8 2 |
| 6834 2 |
87.0 9 |
| 6886 2 |
1.7 1 |
| 6929 2 |
1.8 1 |
| 7107 5 |
~0.05 |
| 7185 3 |
0.29 3 |
| 7252 3 |
0.93 8 |
| 7306 3 |
1.5 1 |
|
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