| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 331.1 (b) | 324.8 (b) | 0.981 | − | 6.515 (b) | 8.452 (b) |
| 2 | (n,elastic) | 16.38 (b) | 18.28 (b) | 1.116 | − | 3.426 (b) | 5.802 (b) |
| 4 | (n,inelastic) | ( E-thr = 44.79 keV ) | 93.93 (μb) | 418.2 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.393 MeV ) | 17.37 (mb) | 317.5 (μb) | |||
| 17 | (n,3n) | ( E-thr = 13.66 MeV ) | 704.0 (μb) | 278.9 (nb) | |||
| 18 | (n,fission) | 169.3 (b) | 164.9 (b) | 0.974 | 56.69 (b) | 3.071 (b) | 2.080 (b) |
| 19 | (n,f) | 0.000 (b) | 0.000 (b) | − | 25.88 (b) | 2.564 (b) | 2.069 (b) |
| 20 | (n,nf) | ( E-thr = 3.000 MeV ) | 435.9 (mb) | 10.85 (mb) | |||
| 21 | (n,2nf) | ( E-thr = 11.00 MeV ) | 71.13 (mb) | 4.687 (μb) | |||
| 102 | (n,γ) | 145.3 (b) | 141.6 (b) | 0.974 | 400.9 (b) | 4.024 (μb) | 149.7 (mb) |
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These cross sections are calculated from JENDL-3.2 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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