| |
|
|---|
| Half life: | 7.516 h 2 | |
|---|
| Jp: | 5/2- |
|---|
| Sn (keV): | 5681.5 5 |
|---|
| Sp (keV): | 8769 50 |
|---|
| Prod. mode: |
Fast neutron activation
Thermal neutron activation
|
|---|
| | |
|---|
| ENSDF citation: | NDS 66,69 (1992) |
|---|
| Literature cut-off date: | 30-Jun-1991 |
|---|
| Author(s): | V.S. Shirley |
|---|
| References since cut-off: |
171Er decay from 1991-98 (NSR)
|
|---|
| |
|---|
Decay properties:
|
|---|
| Mode | Branching (%) | Q-value (keV) |
References |
|---|
| b- | 100 | 1490.5 13 |
72Gr09 |
| |
|---|
Most Recent ENSDF Data (12/2002)
|
|---|
| Mode | Data set name | Display data |
|---|
|
|---|
| TORI Data (1999)
Gammas from 171Er (7.516 h 2)
|
|---|
| Eg (keV) |
Ig (%) | Decay mode |
|---|
|
| 5.025 6 |
|
b- |
| 12.385 8 |
0.0305 18 |
b- |
| 85.63 4 |
0.060 4 |
b- |
| 111.621 4 |
20.5 8 |
b- |
| 116.656 6 |
2.30 6 |
b- |
| 124.015 6 |
9.1 3 |
b- |
| 166.4 3 |
|
b- |
| 175.53 13 |
0.089 9 |
b- |
| 197.74 2 |
0.027 5 |
b- |
| 210.16 5 |
~0.007 |
b- |
| 210.60 3 |
0.642 19 |
b- |
| 237.14 4 |
0.302 10 |
b- |
| 261.4 2 |
<0.02 |
b- |
| 277.37 13 |
0.58 2 |
b- |
| 286.5 2 |
~0.008 |
b- |
| 295.901 13 |
28.9 8 |
b- |
| 308.31 3 |
64.4 16 |
b- |
| 362.91 14 |
0.0197 11 |
b- |
| 371.96 9 |
0.257 10 |
b- |
| 419.9 3 |
0.083 4 |
b- |
| 424.9 5 |
0.0224 23 |
b- |
| 455.6 2 |
0.006 2 |
b- |
| 487.9 2 |
0.005 2 |
b- |
| 495.4 2 |
0.002 1 |
b- |
| 506.8 4 |
0.0227 20 |
b- |
| 519.4 4 |
0.0177 16 |
b- |
| 547.8 5 |
0.017 4 |
b- |
| 559.4 4 |
0.0466 19 |
b- |
| 573.5 2 |
0.0098 15 |
b- |
| 586.1 2 |
0.004 2 |
b- |
| 608.4 4 |
~0.037 |
b- |
| 609.0 2 |
~0.02 |
b- |
| 621.03 23 |
0.089 3 |
b- |
| 630.7 2 |
0.005 1 |
b- |
| 670.8 2 |
0.252 5 |
b- |
| 671.8 2 |
0.022 5 |
b- |
| 676.0 2 |
0.285 6 |
b- |
| 693.5 4 |
0.0150 16 |
b- |
| 705.8 2 |
0.012 4 |
b- |
| 732.5 3 |
0.0976 24 |
b- |
| 745.0 5 |
0.0066 8 |
b- |
| 767.8 2 |
0.0045 5 |
b- |
| 784.09 17 |
0.240 5 |
b- |
| 796.54 11 |
0.640 13 |
b- |
| 860.0 2 |
0.00150 24 |
b- |
| 869.7 3 |
0.055 5 |
b- |
| 871.5 2 |
0.020 5 |
b- |
| 882.0 4 |
0.0385 19 |
b- |
| 907.9 3 |
0.635 13 |
b- |
| 912.6 5 |
0.077 5 |
b- |
| 966.1 4 |
0.0264 8 |
b- |
| 976.2 5 |
0.0007 3 |
b- |
| 994.0 5 |
0.0006 3 |
b- |
| 1051.0 5 |
0.0004 2 |
b- |
| 1096.9 8 |
0.00106 19 |
b- |
| 1109.0 5 |
0.00679 21 |
b- |
| 1156.0 5 |
0.00060 15 |
b- |
| 1168.4 5 |
0.00184 15 |
b- |
| 1172.9 5 |
0.0008 3 |
b- |
| 1182.0 5 |
0.0003 2 |
b- |
| 1220.5 8 |
0.0028 2 |
b- |
| 1271.2 5 |
0.00034 15 |
b- |
| 1279.9 5 |
0.0025 2 |
b- |
| 1284.4 5 |
0.0024 2 |
b- |
| 1395.5 5 |
0.0028 8 |
b- |
| 1400.5 5 |
0.0025 1 |
b- |
|
X-rays from 171Er (7.516 h 2)
|
|---|
| E (keV) |
I (%) | Assignment |
|---|
|
| 6.341 |
0.227 24 |
Tm Ll |
| 7.133 |
0.57 4 |
Tm La2 |
| 7.180 |
5.2 4 |
Tm La1 |
| 7.310 |
0.080 6 |
Tm Lh |
| 8.026 |
0.42 7 |
Tm Lb4 |
| 8.102 |
3.8 3 |
Tm Lb1 |
| 8.176 |
0.059 4 |
Tm Lb6 |
| 8.231 |
0.66 10 |
Tm Lb3 |
| 8.468 |
1.01 8 |
Tm Lb2 |
| 9.437 |
0.68 6 |
Tm Lg1 |
| 9.730 |
0.133 22 |
Tm Lg2 |
| 9.779 |
0.19 3 |
Tm Lg3 |
| 49.274 |
0.0066 3 |
Tm Ka3 |
| 49.773 |
13.3 5 |
Tm Ka2 |
| 50.742 |
23.5 9 |
Tm Ka1 |
| 57.300 |
2.48 9 |
Tm Kb3 |
| 57.505 |
4.80 18 |
Tm Kb1 |
| 57.898 |
0.095 5 |
Tm Kb5 |
| 59.028 |
1.62 6 |
Tm Kb2 |
| 59.210 |
0.429 22 |
Tm Kb4 |
Betas from 171Er (7.516 h 2)
|
|---|
| Eb endpoint (keV) |
Ib (%) | Decay mode |
|---|
|
| 89.9 |
0.0063 9 |
b- |
| 99.4 |
0.026 1 |
b- |
| 194.1 |
0.020 5 |
b- |
| 205.5 |
0.33 2 |
b- |
| 264.8 |
0.011 1 |
b- |
| 491.9 |
0.52 3 |
b- |
| 577.51 |
2.19 5 |
b- |
| 668.1 |
0.029 4 |
b- |
| 753.06 |
0.044 16 |
b- |
| 814.64 |
0.19 2 |
b- |
| 854.93 |
0.02 |
b- |
| 1065.55 |
94.4 18 |
b- |
| 1163.71 |
0.020 9 |
b- |
| 1485.47 |
2.3 2 |
b- |
| 1490.5 |
2.3 2 |
b- |
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