| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.307 (b) | 5.974 (b) | 1.126 | − | 4.539 (b) | 5.615 (b) |
| 2 | (n,elastic) | 5.027 (b) | 5.675 (b) | 1.129 | − | 2.506 (b) | 4.649 (b) |
| 4 | (n,inelastic) | ( E-thr = 841.4 keV ) | 868.6 (mb) | 853.7 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.81 MeV ) | 770.0 (mb) | 176.6 (μb) | |||
| 22 | (n,na) | ( E-thr = 1.708 MeV ) | 19.06 (mb) | 10.77 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.433 MeV ) | 179.9 (mb) | 33.59 (μb) | |||
| 32 | (n,nd) | ( E-thr = 15.14 MeV ) | − | 12.50e-12 (b) | |||
| 102 | (n,γ) | 271.1 (mb) | 271.2 (mb) | 1.001 | 6.405 (b) | 1.171 (mb) | 97.80 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 39.03 (mb) | 156.8 (mb) | 3.277 (mb) |
| 104 | (n,d) | ( E-thr = 5.099 MeV ) | 1.770 (mb) | 381.6 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.886 MeV ) | 8.094 (μb) | 6.967 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.566 MeV ) | 257.2 (nb) | 743.6e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 53.81 (mb) | 34.04 (mb) | 9.707 (mb) |
| 111 | (n,2p) | ( E-thr = 4.925 MeV ) | 1.412 (mb) | 310.2 (nb) | |||
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These cross sections are calculated from JENDL-4.0 at 300K.
The background color of each cell noted a cross section means the order of the cross-section value.
The unit of cross section, (b), means barns, and SI prefixes are used as following.
(kb) → 103(b), (mb) → 10−3(b),
(μb) → 10−6(b), (nb) → 10−9(b).
MT is a number that defines a reaction type. For the relation between MT and reaction type, please see here or refer to the manual of ENDF formats.
Maxwellian Average :
where T denotes the temperature, and kB the Boltzmann constant.
The upper and lower limits of integration, EL and EU
are set to 10−5 eV and 10 eV, respectively.
Resonance Integral :
with EL = 0.5 eV and EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
with EL = 10−5 eV and EU = 20 MeV.
The parameters a and b are 0.988 MeV and 2.249 MeV−1, respectively.
Westcott g-factor :
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