| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.386 (kb) | 1.440 (kb) | 1.039 | − | 5.799 (b) | 7.839 (b) |
| 2 | (n,elastic) | 11.36 (b) | 12.59 (b) | 1.108 | − | 3.290 (b) | 5.167 (b) |
| 4 | (n,inelastic) | ( E-thr = 41.97 keV ) | 2.002 (mb) | 884.0 (mb) | |||
| 16 | (n,2n) | ( E-thr = 5.262 MeV ) | 114.3 (mb) | 21.37 (mb) | |||
| 17 | (n,3n) | ( E-thr = 11.82 MeV ) | 95.00 (mb) | 18.00 (μb) | |||
| 18 | (n,fission) | 1.013 (kb) | 1.059 (kb) | 1.046 | 571.1 (b) | 2.298 (b) | 1.648 (b) |
| 37 | (n,4n) | ( E-thr = 17.50 MeV ) | − | 22.74 (nb) | |||
| 102 | (n,γ) | 361.6 (b) | 368.0 (b) | 1.018 | 179.9 (b) | 105.0 (nb) | 118.2 (mb) |
|
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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