Table D.10.

Photoneutrons currents emitted by the 240Pu target irradiated by monoenergetic photons from the (γ, n) reaction threshold to 20 MeV, uncertainties are absolute.

E (MeV) Neutron yield per 103 incident photons
ENDF/B-VIII.1
JENDL-5
MCNP6 PHITS TRIPOLI-4 MCNP6 PHITS TRIPOLI-4
6 0.571 ± 0.001 0.572 ± 0.000 0.573 ± 0.000 0.600 ± 0.001 0.603 ± 0.000 0.601 ± 0.000
7 1.460 ± 0.001 1.460 ± 0.000 1.463 ± 0.000 1.233 ± 0.001 1.238 ± 0.000 1.236 ± 0.000
8 2.805 ± 0.001 2.808 ± 0.000 2.813 ± 0.000 2.760 ± 0.001 2.776 ± 0.000 2.767 ± 0.000
9 5.885 ± 0.002 5.887 ± 0.000 5.894 ± 0.001 6.566 ± 0.002 6.600 ± 0.000 6.580 ± 0.001
10 13.971 ± 0.003 13.976 ± 0.000 13.994 ± 0.001 13.069 ± 0.003 13.136 ± 0.000 13.092 ± 0.001
11 22.520 ± 0.005 22.534 ± 0.000 22.555 ± 0.001 18.076 ± 0.004 18.173 ± 0.000 18.102 ± 0.001
12 19.273 ± 0.004 19.291 ± 0.000 19.299 ± 0.001 23.433 ± 0.005 23.568 ± 0.000 23.469 ± 0.001
13 24.715 ± 0.002 24.746 ± 0.000 24.746 ± 0.001 28.020 ± 0.003 28.189 ± 0.000 28.057 ± 0.001
14 32.698 ± 0.003 32.745 ± 0.000 32.735 ± 0.001 29.284 ± 0.003 29.476 ± 0.000 29.318 ± 0.001
15 28.089 ± 0.003 28.161 ± 0.000 28.122 ± 0.001 30.641 ± 0.003 30.865 ± 0.000 30.677 ± 0.001
16 19.042 ± 0.004 19.141 ± 0.000 19.061 ± 0.001 29.803 ± 0.003 30.057 ± 0.000 29.840 ± 0.001
17 12.683 ± 0.003 12.823 ± 0.000 12.697 ± 0.001 20.722 ± 0.004 20.963 ± 0.000 20.742 ± 0.001
18 8.869 ± 0.002 9.058 ± 0.000 8.877 ± 0.001 13.683 ± 0.003 13.932 ± 0.000 13.697 ± 0.001
19 6.578 ± 0.002 6.827 ± 0.001 6.585 ± 0.001 9.652 ± 0.002 9.935 ± 0.000 9.662 ± 0.001
20 5.214 ± 0.001 5.529 ± 0.000 5.218 ± 0.000 7.288 ± 0.001 7.586 ± 0.000 7.293 ± 0.000

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