| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 21.68 (b) | 23.34 (b) | 1.076 | − | 5.500 (b) | 6.801 (b) |
| 2 | (n,elastic) | 12.83 (b) | 14.48 (b) | 1.129 | − | 2.721 (b) | 4.568 (b) |
| 4 | (n,inelastic) | ( E-thr = 79.15 keV ) | 439.2 (mb) | 2.202 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.301 MeV ) | 2.309 (b) | 8.542 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.34 MeV ) | 27.80 (mb) | 19.07 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 4.279 (nb) | 3.803 (μb) | 1.616 (nb) |
| 28 | (n,np) | ( E-thr = 8.652 MeV ) | 3.436 (μb) | 8.599 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.05 MeV ) | 0.000 (b) | 10.96e-12 (b) | |||
| 102 | (n,γ) | 8.856 (b) | 8.862 (b) | 1.001 | 46.38 (b) | 1.868 (mb) | 22.47 (mb) |
| 103 | (n,p) | ( E-thr = 3.104 MeV ) | 1.880 (mb) | 495.7 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.414 MeV ) | 144.3 (μb) | 34.43 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.756 MeV ) | 1.148 (μb) | 974.4e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 603.0 (nb) | 180.9 (μb) | 63.80 (nb) |
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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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