| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 26.42 (b) | 27.43 (b) | 1.038 | − | 4.994 (b) | 6.331 (b) |
| 2 | (n,elastic) | 7.716 (b) | 8.712 (b) | 1.129 | − | 2.774 (b) | 5.380 (b) |
| 4 | (n,inelastic) | ( E-thr = 105.0 keV ) | 577.7 (mb) | 921.5 (mb) | |||
| 16 | (n,2n) | ( E-thr = 9.898 MeV ) | 1.625 (b) | 591.8 (μb) | |||
| 17 | (n,3n) | ( E-thr = 17.97 MeV ) | − | 5.932 (nb) | |||
| 22 | (n,na) | ( E-thr = 817.4 keV ) | 195.6 (μb) | 87.69 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.275 MeV ) | 2.936 (mb) | 724.0 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.50 MeV ) | − | 4.563e-12 (b) | |||
| 102 | (n,γ) | 18.71 (b) | 18.72 (b) | 1.000 | 8.563 (b) | 1.381 (mb) | 27.53 (mb) |
| 103 | (n,p) | ( E-thr = 1.390 MeV ) | 11.58 (mb) | 31.68 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.034 MeV ) | 1.160 (mb) | 243.6 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.196 MeV ) | 525.5 (nb) | 977.2e-12 (b) | |||
| 106 | (n,He-3) | ( E-thr = 4.765 MeV ) | 169.5e-12 (b) | 1.103e-12 (b) | |||
| 107 | (n,a) | 15.27 (μb) | 15.28 (μb) | 1.001 | 171.9 (μb) | 4.487 (mb) | 12.25 (μb) |
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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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