| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 10.99 (b) | 11.48 (b) | 1.044 | − | 4.537 (b) | 5.615 (b) |
| 2 | (n,elastic) | 3.680 (b) | 4.152 (b) | 1.128 | − | 2.798 (b) | 4.100 (b) |
| 4 | (n,inelastic) | ( E-thr = 90.31 keV ) | 265.1 (mb) | 1.440 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.546 MeV ) | 1.408 (b) | 4.020 (mb) | |||
| 17 | (n,3n) | ( E-thr = 17.88 MeV ) | − | 72.33 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.353 MeV ) | 2.441 (mb) | 556.8 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.566 MeV ) | 2.901 (mb) | 599.1 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.59 MeV ) | 0.000 (b) | 565.5e-12 (b) | |||
| 102 | (n,γ) | 7.312 (b) | 7.326 (b) | 1.002 | 170.7 (b) | 1.001 (mb) | 67.87 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 4.056 (mb) | 46.45 (mb) | 361.5 (μb) |
| 104 | (n,d) | ( E-thr = 6.232 MeV ) | 1.987 (mb) | 411.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.344 MeV ) | 36.19 (μb) | 19.72 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.002 MeV ) | 1.034 (nb) | 81.63e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 4.359 (mb) | 11.75 (mb) | 895.1 (μb) |
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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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