| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 10.54 (b) | 11.14 (b) | 1.057 | − | 4.967 (b) | 6.166 (b) |
| 2 | (n,elastic) | 4.518 (b) | 5.099 (b) | 1.128 | − | 2.844 (b) | 4.240 (b) |
| 4 | (n,inelastic) | ( E-thr = 19.03 keV ) | 240.8 (mb) | 1.893 (b) | |||
| 16 | (n,2n) | ( E-thr = 5.181 MeV ) | 1.742 (b) | 26.92 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.40 MeV ) | 137.1 (mb) | 27.43 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 129.3 (nb) | 163.8 (μb) | 48.13 (nb) |
| 28 | (n,np) | ( E-thr = 8.929 MeV ) | 17.10 (μb) | 23.89 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.89 MeV ) | 0.000 (b) | 273.3e-12 (b) | |||
| 102 | (n,γ) | 6.003 (b) | 6.006 (b) | 1.001 | 15.92 (b) | 951.6 (μb) | 6.260 (mb) |
| 103 | (n,p) | ( E-thr = 2.661 MeV ) | 4.011 (mb) | 1.613 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.689 MeV ) | 374.2 (μb) | 93.88 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.591 MeV ) | 45.69 (μb) | 11.19 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.808 MeV ) | 0.000 (b) | 4.833e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 21.78 (μb) | 550.9 (μb) | 2.532 (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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