Table D.6.

Photoneutrons currents emitted by the 237Np 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
3 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000
4 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000 0.000 ± 0.000
5 0.005 ± 0.000 0.005 ± 0.000 0.005 ± 0.000 0.003 ± 0.000 0.003 ± 0.000 0.003 ± 0.000
6 0.602 ± 0.001 0.602 ± 0.000 0.603 ± 0.000 0.655 ± 0.001 0.627 ± 0.000 0.658 ± 0.000
7 1.363 ± 0.001 1.364 ± 0.000 1.366 ± 0.000 1.400 ± 0.001 1.338 ± 0.000 1.403 ± 0.000
8 2.607 ± 0.001 2.610 ± 0.000 2.613 ± 0.000 2.592 ± 0.001 2.479 ± 0.000 2.599 ± 0.000
9 5.478 ± 0.002 5.480 ± 0.000 5.485 ± 0.001 5.243 ± 0.002 5.017 ± 0.000 5.256 ± 0.001
10 12.559 ± 0.003 12.564 ± 0.000 12.575 ± 0.001 11.737 ± 0.002 11.235 ± 0.000 11.760 ± 0.001
11 22.119 ± 0.004 22.132 ± 0.000 22.148 ± 0.001 19.599 ± 0.004 18.770 ± 0.000 19.635 ± 0.001
12 19.992 ± 0.004 20.010 ± 0.000 20.016 ± 0.001 18.309 ± 0.004 17.545 ± 0.000 18.340 ± 0.001
13 23.085 ± 0.005 23.115 ± 0.000 23.110 ± 0.001 22.250 ± 0.004 21.334 ± 0.000 22.285 ± 0.001
14 30.213 ± 0.003 30.257 ± 0.000 30.239 ± 0.001 28.865 ± 0.003 27.695 ± 0.000 28.908 ± 0.001
15 26.403 ± 0.003 26.472 ± 0.000 26.426 ± 0.001 26.651 ± 0.003 25.599 ± 0.000 26.693 ± 0.001
16 18.584 ± 0.004 18.681 ± 0.000 18.598 ± 0.001 19.462 ± 0.004 18.736 ± 0.000 19.488 ± 0.001
17 13.082 ± 0.003 13.217 ± 0.000 13.097 ± 0.001 13.271 ± 0.003 12.835 ± 0.000 13.286 ± 0.001
18 9.639 ± 0.002 9.822 ± 0.000 9.648 ± 0.001 9.475 ± 0.002 9.237 ± 0.000 9.485 ± 0.001
19 7.405 ± 0.002 7.644 ± 0.001 7.412 ± 0.001 8.098 ± 0.002 7.963 ± 0.000 8.106 ± 0.001
20 5.909 ± 0.001 6.212 ± 0.000 5.913 ± 0.000 7.540 ± 0.001 7.483 ± 0.000 7.549 ± 0.000

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