| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.088 (b) | 1.220 (b) | 1.121 | − | 1.471 (b) | 1.845 (b) |
| 2 | (n,elastic) | 1.043 (b) | 1.175 (b) | 1.127 | − | 1.025 (b) | 1.660 (b) |
| 4 | (n,inelastic) | ( E-thr = 546.3 keV ) | 365.0 (mb) | 184.7 (mb) | |||
| 16 | (n,2n) | ( E-thr = 8.300 MeV ) | 70.09 (mb) | 38.53 (μb) | |||
| 102 | (n,γ) | 45.40 (mb) | 45.43 (mb) | 1.001 | 20.44 (mb) | 1.932 (μb) | 6.908 (μb) |
| 104 | (n,d) | ( E-thr = 8.868 MeV ) | 9.763 (mb) | 10.98 (μb) | |||
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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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