| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 941.2 (b) | 941.9 (b) | 1.001 | − | 1.432 (b) | 1.900 (b) |
| 2 | (n,elastic) | 798.0 (mb) | 898.4 (mb) | 1.126 | − | 905.8 (mb) | 1.422 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.752 MeV ) | 412.0 (mb) | 142.8 (mb) | |||
| 16 | (n,2n) | ( E-thr = 6.614 MeV ) | 78.05 (mb) | 190.5 (μb) | |||
| 102 | (n,γ) | 38.49 (mb) | 38.51 (mb) | 1.000 | 17.43 (mb) | 82.06 (μb) | 28.05 (μb) |
| 103 | (n,p) | ( E-thr = 3.185 MeV ) | 6.766 (mb) | 4.264 (mb) | |||
| 105 | (n,t) | 940.4 (b) | 940.9 (b) | 1.001 | 425.2 (b) | 28.04 (mb) | 330.7 (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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