| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 175.8 (b) | 175.0 (b) | 0.995 | − | 5.772 (b) | 7.832 (b) |
| 2 | (n,elastic) | 14.09 (b) | 15.73 (b) | 1.117 | − | 2.773 (b) | 4.616 (b) |
| 4 | (n,inelastic) | ( E-thr = 33.24 keV ) | 336.5 (mb) | 1.711 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.657 MeV ) | 492.5 (mb) | 3.120 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.36 MeV ) | 13.33 (mb) | 3.227 (μb) | |||
| 18 | (n,fission) | 20.37 (mb) | 19.87 (mb) | 0.976 | 5.433 (b) | 2.156 (b) | 1.350 (b) |
| 37 | (n,4n) | ( E-thr = 19.38 MeV ) | − | 203.8e-15 (b) | |||
| 102 | (n,γ) | 161.7 (b) | 159.2 (b) | 0.985 | 662.2 (b) | 1.068 (mb) | 152.2 (mb) |
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These cross sections are calculated from JENDL-3.3 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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