Thermal Neutron Capture Gammas
https://www.nndc.bnl.gov/capgam/indexbyn.html
Sodium & Iodine (NaI Detector)
| Isotope Name |
Natural Abundance (%) |
Thermal Neutron Cross Section (Barnes) |
Half Life |
Capture Gamma Lines (int > %)
|
| Energy (KeV) |
Intensity
|
| 23Na |
100% |
0.517 b ± 0.004 b |
Stable |
90.99 |
49.27
|
| 472.20 |
100.00
|
| 869.23 |
22.59
|
| 874.40 |
15.89
|
| 1636.27 |
5.24
|
| 2025.09 |
6.85
|
| 2208.40 |
5.72
|
| 2414.45 |
5.32
|
| 2517.71 |
15.20
|
| 2752.22 |
13.67
|
| 3587.40 |
12.48
|
| 127I |
100% |
6.15 b ± 0.06 b |
Stable |
27.36 |
23.03
|
| 52.378 |
11.727
|
| 58.107 |
19.829
|
| 67.118 |
7.207
|
| 124.2804 |
12.623
|
| 133.6106 |
100
|
| 142.1371 |
9.638
|
| 147.104 |
6.802
|
| 153.011 |
12.516
|
| 156.506 |
6.269
|
| 160.756 |
10.554
|
| 193.5634 |
6.78
|
| 248.742 |
7.441
|
| 301.897 |
11.834
|
| 344.757 |
5.352
|
| 420.843 |
7.143
|
| 129I |
0% |
30.3 b ± 1.2 b |
1.57 x 107 years |
69.59 |
18.57
|
| 85.1104 |
8.286
|
| 159.9921 |
6.286
|
| 184.9756 |
9.143
|
| 309.794 |
7.186
|
| ||
|-
Shielding
| Isotope Name |
Natural Abundance (%) |
Thermal Neutron Cross Section (Barnes) |
Half Life |
Capture Gamma Lines (int > %)
|
| Energy (KeV) |
Intensity
|
| 27Al |
100% |
0.231 b ± 0.003 b |
Stable |
30.64 |
100.00
|
| 983.018 |
15.771
|
| 1013.676 |
9.677
|
| 1408.3 |
11.111
|
| 1526.17 |
6.452
|
| 1589.72 |
5.735
|
| 1622.87 |
16.487
|
| 2108.24 |
10.0358
|
| 2138.828 |
7.885
|
| 2271.65 |
7.527
|
| 2282.773 |
16.846
|
| 2577.725 |
7.885
|
| 2590.244 |
14.516
|
| 2821.461 |
13.978
|
| 3033.893 |
31.183
|
| 3465.067 |
25.305
|
| 3591.211 |
16.846
|
| 10B |
19.9% |
0.305 b ± 0.016 b |
Stable |
2296.63 |
13.57
|
| 2533.4 |
21.494
|
| 4444.03 |
100
|
| 4711.18 |
39.0244
|
| 6739.53 |
28.963
|
| 7006.75 |
84.299
|
| 12C |
98.93% |
0.00353 b ± 7E-05 b |
Stable |
1261.76 |
47.96
|
| 3683.921 |
47.636
|
| 4945.301 |
100
|
| 13C |
1.07% |
0.00137 b ± 4E-05 b |
Stable |
495.40 |
9.52
|
| 1273.81 |
5.833
|
| 1586.92 |
10.119
|
| 1H |
99.9885% |
0.3326 b ± 0.0007 b |
Stable |
2223.25 |
100.00
|
| 204Pb |
1.4% |
0.703 b ± 0.035 b |
Stable |
260.50 |
19.59
|
| 573.85 |
15.258
|
| 1543.9 |
17.526
|
| 1812.03 |
20.619
|
| 4613.58 |
22.68
|
| 4919.27 |
19.381
|
| 6468.86 |
22.0619
|
| 6729.36 |
100
|
| 208Pb |
52.4% |
0.00023 b ± 2E-05 b |
Stable |
465.30 |
76.09
|
| 970.5 |
10
|
| 1400.3 |
10.87
|
| 1567.1 |
100
|
| 1621.5 |
12.174
|
| 1788.3 |
22.174
|
| 1905.7 |
33.913
|
Converter
| Isotope Name |
Natural Abundance (%) |
Thermal Neutron Cross Section (Barnes) |
Half Life |
Capture Gamma Lines (int > %)
|
| Energy (KeV) |
Intensity
|
| 152Gd |
0.20% |
735 b ± 20 b |
1.08×1014 y |
41.56 |
87.27
|
| 51.7842 |
15.818
|
| 87.608 |
29.636
|
| 88.2962 |
19.273
|
| 109.7601 |
100
|
| 141.914 |
42
|
| 166.908 |
15.145
|
| 174.436 |
19.636
|
| 183.467 |
32
|
| 186.857 |
16
|
| 195.182 |
16.727
|
| 206.2667 |
18.909
|
| 212.004 |
38.545
|
| 249.546 |
43.818
|
| 315.077 |
16.727
|
| 315.199 |
50.727
|
| 316.026 |
42.364
|
| 320.089 |
27.455
|
| 327.844 |
28
|
| 361.629 |
20.727
|
| 371.33 |
17.455
|
| 436.266 |
35.273
|
| 467.1 |
23.818
|
| 500.483 |
15.545
|
| 530.453 |
16.727
|
| 153Gd |
0% |
22310 b ± 300 b |
240.4 d |
123.07 |
100.00
|
| 247.92 |
46.145
|
| 692.41 |
19.818
|
| 873.18 |
15.236
|
| 154Gd |
2.18% |
85 b ± 12 b |
Stable |
86.55 |
100.00
|
| 105.309 |
52.593
|
| 163.311 |
15.185
|
| 5820.3 |
17.037
|
| 155Gd |
14.8% |
60900 b ± 500 b |
Stable |
88.97 |
66.14
|
| 199.218994 |
100
|
| 1065.1781 |
17.848
|
| 1154.14673 |
15.823
|
| 1159.031 |
21.519
|
| 1230.6857 |
17.595
|
| 156Gd |
20.47% |
1.8 b ± 0.7 b |
Stable |
410.75 |
16.83
|
| 4745.8 |
16.237
|
| 5550.77 |
19.57
|
| 5566.29 |
29.785
|
| 6359.82 |
100
|
| 157Gd |
15.65% |
254000 b ± 815 b |
Stable |
79.51 |
53.18
|
| 181.943 |
100
|
| 897.506 |
17.846
|
| 897.62 |
16
|
| 944.181 |
46.667
|
| 962.122 |
29.744
|
| 977.144 |
21.0769
|
| 1107.67 |
24.615
|
| 1119.2 |
17.0256
|
| 1186.002 |
23.333
|
| 1187.136 |
20.564
|
| 6750 |
15.08
|
| 158Gd |
24.84% |
2.2 b ± 0.2 b |
Stable |
95.69 |
50.00
|
| 146.324 |
27.692
|
| 466.618 |
27.5
|
| 507.639 |
71.154
|
| 507.727 |
100
|
| 524.77 |
18.269
|
| 537.86 |
26.538
|
| 551.385 |
40
|
| 558.195 |
51.923
|
| 596.066 |
15.192
|
| 601.969 |
82.692
|
| 646.75 |
25.577
|
| 676.512 |
32.885
|
| 700.16 |
19.231
|
| 713.649 |
18.654
|
| 781.56 |
18.654
|
| 790.9 |
29.231
|
| 933.08 |
23.0769
|
| 963.85 |
23.0769
|
| 1000.51 |
15.769
|
| 1028.62 |
21.731
|
| 1061.63 |
31.538
|
| 1078.57 |
19.231
|
| 1095.18 |
16.154
|
| 1128.47 |
22.308
|
| 1139.9 |
37.115
|
| 4802 |
23.08
|
| 5385 |
16.54
|
| 5434 |
30.77
|
| 5942 |
86.54
|
| 160Gd |
21.86% |
1.4 b ± 0.3 b |
>3.1×1019 y |
394.70 |
91.49
|
| 469 |
91.49
|
| 804.3 |
16.81
|
| 1273 |
21.28
|
| 1490 |
29.79
|
| 3712 |
15.11
|
| 3787 |
23.4
|
| 4227 |
19.36
|
| 4255 |
21.28
|
| 4298 |
34.04
|
| 4324 |
20.85
|
| 5280 |
100
|
| 5321 |
18.51
|
Fast Neutron Interactions
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