| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.563 (b) | 1.698 (b) | 1.086 | − | 1.739 (b) | 2.726 (b) |
| 2 | (n,elastic) | 1.041 (b) | 1.174 (b) | 1.128 | − | 762.4 (mb) | 2.484 (b) |
| 4 | (n,inelastic) | ( E-thr = 866.4 keV ) | 405.5 (mb) | 97.27 (mb) | |||
| 16 | (n,2n) | ( E-thr = 8.915 MeV ) | 11.96 (mb) | 3.118 (μb) | |||
| 22 | (n,na) | ( E-thr = 7.167 MeV ) | 83.83 (mb) | 75.14 (μb) | |||
| 28 | (n,np) | ( E-thr = 9.144 MeV ) | 72.76 (mb) | 38.15 (μb) | |||
| 102 | (n,γ) | 514.0 (mb) | 514.0 (mb) | 1.000 | 242.4 (mb) | 3.234 (μb) | 551.8 (μb) |
| 103 | (n,p) | 12.09 (μb) | 13.64 (μb) | 1.128 | 371.2 (mb) | 247.3 (mb) | 66.55 (mb) |
| 107 | (n,a) | 7.916 (mb) | 8.932 (mb) | 1.128 | 428.1 (mb) | 155.3 (mb) | 77.05 (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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