| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.597 (b) | 6.313 (b) | 1.128 | − | 4.337 (b) | 5.663 (b) |
| 2 | (n,elastic) | 5.576 (b) | 6.293 (b) | 1.128 | − | 2.557 (b) | 5.020 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.526 MeV ) | 672.1 (mb) | 602.0 (mb) | |||
| 16 | (n,2n) | ( E-thr = 12.83 MeV ) | 151.2 (mb) | 18.73 (μb) | |||
| 22 | (n,na) | ( E-thr = 5.685 MeV ) | 137.2 (μb) | 87.26 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.548 MeV ) | 803.1 (mb) | 304.6 (μb) | |||
| 102 | (n,γ) | 20.76 (mb) | 20.76 (mb) | 1.000 | 966.6 (mb) | 1.045 (mb) | 27.99 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 101.5 (mb) | 128.2 (mb) | 11.06 (mb) |
| 104 | (n,d) | ( E-thr = 5.210 MeV ) | 2.352 (mb) | 508.6 (nb) | |||
| 105 | (n,t) | ( E-thr = 11.15 MeV ) | 4.766 (nb) | 2.117 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.952 MeV ) | 259.7 (nb) | 755.7e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 2.421 (mb) | 21.40 (mb) | 147.5 (μb) |
| 111 | (n,2p) | ( E-thr = 5.485 MeV ) | 103.2 (μb) | 24.79 (nb) | |||
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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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