| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 4.187 (b) | 4.462 (b) | 1.066 | − | 2.017 (b) | 2.819 (b) |
| 2 | (n,elastic) | 2.124 (b) | 2.398 (b) | 1.129 | − | 958.4 (mb) | 2.599 (b) |
| 4 | (n,inelastic) | ( E-thr = 30.76 keV ) | 149.4 (mb) | 72.00 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.997 MeV ) | 3.929 (mb) | 1.340 (μb) | |||
| 22 | (n,na) | ( E-thr = 6.375 MeV ) | 79.31 (mb) | 46.28 (μb) | |||
| 28 | (n,np) | ( E-thr = 6.545 MeV ) | 222.4 (mb) | 730.7 (μb) | |||
| 102 | (n,γ) | 2.058 (b) | 2.060 (b) | 1.001 | 1.116 (b) | 8.088 (μb) | 2.893 (mb) |
| 103 | (n,p) | 513.0 (μb) | 508.0 (μb) | 0.990 | 461.5 (mb) | 362.6 (mb) | 105.8 (mb) |
| 107 | (n,a) | 4.058 (mb) | 4.127 (mb) | 1.017 | 273.1 (mb) | 241.2 (mb) | 38.36 (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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