| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 91.08 (b) | 92.82 (b) | 1.019 | − | 5.921 (b) | 7.935 (b) |
| 2 | (n,elastic) | 10.92 (b) | 12.33 (b) | 1.129 | − | 2.735 (b) | 4.566 (b) |
| 4 | (n,inelastic) | ( E-thr = 38.16 keV ) | 343.9 (mb) | 1.137 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.570 MeV ) | 97.35 (mb) | 70.66 (μb) | |||
| 17 | (n,3n) | ( E-thr = 13.87 MeV ) | 702.6 (nb) | 4.891 (nb) | |||
| 18 | (n,fission) | 30.01 (b) | 30.05 (b) | 1.001 | 187.9 (b) | 2.742 (b) | 2.046 (b) |
| 19 | (n,f) | 30.01 (b) | 30.05 (b) | 1.001 | 187.3 (b) | 1.288 (b) | 2.016 (b) |
| 20 | (n,nf) | ( E-thr = 2.100 MeV ) | 1.451 (b) | 29.49 (mb) | |||
| 21 | (n,2nf) | ( E-thr = 10.00 MeV ) | 2.034 (mb) | 1.819 (μb) | |||
| 38 | (n,3nf) | ( E-thr = 16.50 MeV ) | − | 2.318e-12 (b) | |||
| 102 | (n,γ) | 50.01 (b) | 49.99 (b) | 1.000 | 293.0 (b) | 1.226 (mb) | 184.3 (mb) |
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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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