CH Isotope Table

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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 (secondary) 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


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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 22310 b ± 300 b rowspan="4" 240.4 d 123.07 100.00
247.92 46.145
692.41 19.818
873.18 15.236
154Gd (2.18) Stable 86.55 100.00
105.309 52.593
163.311 15.185
5820.3 17.037
155Gd (14.8) 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) Stable 410.75 16.83
4745.8 16.237
5550.77 19.57
5566.29 29.785
6359.82 100
157Gd (15.65) 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) 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) >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

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Fast Neutron Interactions

PAS Experiment

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