| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 49.89 (b) | 52.80 (b) | 1.058 | − | 2.175 (b) | 3.346 (b) |
| 2 | (n,elastic) | 22.74 (b) | 25.66 (b) | 1.128 | − | 1.159 (b) | 2.678 (b) |
| 4 | (n,inelastic) | ( E-thr = 12.68 keV ) | 663.2 (mb) | 633.0 (mb) | |||
| 16 | (n,2n) | ( E-thr = 11.58 MeV ) | 240.0 (mb) | 37.87 (μb) | |||
| 102 | (n,γ) | 27.14 (b) | 27.14 (b) | 1.000 | 11.83 (b) | 1.045 (mb) | 6.172 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 130.6 (mb) | 59.00 (mb) | 25.64 (mb) |
| 107 | (n,a) | ( E-thr = 405.9 keV ) | 53.50 (mb) | 2.518 (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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