| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 4.924 (b) | 5.354 (b) | 1.087 | − | 5.074 (b) | 6.259 (b) |
| 2 | (n,elastic) | 3.315 (b) | 3.739 (b) | 1.128 | − | 2.910 (b) | 5.280 (b) |
| 4 | (n,inelastic) | ( E-thr = 606.6 keV ) | 115.7 (mb) | 958.5 (mb) | |||
| 16 | (n,2n) | ( E-thr = 6.483 MeV ) | 1.175 (b) | 13.32 (mb) | |||
| 17 | (n,3n) | ( E-thr = 11.24 MeV ) | 873.7 (mb) | 129.0 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 5.274 (μb) | 1.313 (mb) | 516.8 (nb) |
| 28 | (n,np) | ( E-thr = 10.02 MeV ) | 118.5e-12 (b) | 5.429 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.67 MeV ) | 0.000 (b) | 102.1e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 11.76 MeV ) | 4.336e-18 (b) | 956.9e-12 (b) | |||
| 102 | (n,γ) | 1.601 (b) | 1.602 (b) | 1.001 | 727.5 (mb) | 1.001 (mb) | 784.0 (μb) |
| 103 | (n,p) | ( E-thr = 5.300 MeV ) | 913.3 (μb) | 196.3 (nb) | |||
| 104 | (n,d) | ( E-thr = 7.694 MeV ) | 15.08 (μb) | 34.72 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.443 MeV ) | 63.02 (μb) | 34.43 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 9.802 (μb) | 666.9 (μb) | 585.2 (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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