| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 148.6 (b) | 149.2 (b) | 1.005 | − | 4.676 (b) | 5.888 (b) |
| 2 | (n,elastic) | 159.8 (mb) | 173.2 (mb) | 1.084 | − | 2.471 (b) | 3.903 (b) |
| 4 | (n,inelastic) | ( E-thr = 357.0 keV ) | 806.2 (mb) | 1.702 (b) | |||
| 16 | (n,2n) | ( E-thr = 10.57 MeV ) | 1.305 (b) | 354.1 (μb) | |||
| 17 | (n,3n) | ( E-thr = 18.60 MeV ) | − | 2.108 (nb) | |||
| 22 | (n,na) | ( E-thr = 686.0 keV ) | 2.371 (mb) | 1.718 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.063 MeV ) | 17.83 (mb) | 4.230 (μb) | |||
| 32 | (n,nd) | ( E-thr = 14.84 MeV ) | − | 1.285e-12 (b) | |||
| 102 | (n,γ) | 148.4 (b) | 149.1 (b) | 1.004 | 3.267 (kb) | 1.804 (mb) | 280.3 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 10.23 (mb) | 63.82 (mb) | 882.2 (μb) |
| 104 | (n,d) | ( E-thr = 4.820 MeV ) | 2.775 (mb) | 652.9 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.527 MeV ) | 1.368 (μb) | 2.802 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.240 MeV ) | 1.569 (nb) | 9.479e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.536 (mb) | 9.034 (mb) | 189.8 (μb) |
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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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