| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 46.35 (b) | 47.26 (b) | 1.020 | − | 4.258 (b) | 5.658 (b) |
| 2 | (n,elastic) | 7.724 (b) | 8.707 (b) | 1.127 | − | 2.514 (b) | 3.980 (b) |
| 4 | (n,inelastic) | ( E-thr = 93.88 keV ) | 367.8 (mb) | 1.569 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.637 MeV ) | 1.351 (b) | 787.8 (μb) | |||
| 17 | (n,3n) | ( E-thr = 17.64 MeV ) | − | 42.75 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.831 MeV ) | 623.8 (μb) | 211.9 (nb) | |||
| 28 | (n,np) | ( E-thr = 5.835 MeV ) | 6.100 (mb) | 4.466 (μb) | |||
| 102 | (n,γ) | 38.63 (b) | 38.55 (b) | 0.998 | 103.9 (b) | 78.43 (μb) | 107.7 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 4.042 (mb) | 14.74 (mb) | 490.1 (μb) |
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 310.9 (μb) | 4.215 (mb) | 16.83 (μb) |
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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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