| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.621 (b) | 1.700 (b) | 1.049 | − | 5.102 (b) | 6.369 (b) |
| 2 | (n,elastic) | 616.8 (mb) | 695.9 (mb) | 1.128 | − | 2.804 (b) | 5.282 (b) |
| 4 | (n,inelastic) | ( E-thr = 645.8 keV ) | 239.3 (mb) | 1.073 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.224 MeV ) | 1.990 (b) | 7.373 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.70 MeV ) | 54.17 (mb) | 13.98 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 85.12 (μb) | 6.125 (mb) | 4.338 (μb) |
| 28 | (n,np) | ( E-thr = 8.883 MeV ) | 8.297 (μb) | 32.39 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.37 MeV ) | 0.000 (b) | 114.7e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 12.34 MeV ) | 10.27e-21 (b) | 180.3e-12 (b) | |||
| 102 | (n,γ) | 1.004 (b) | 1.004 (b) | 1.000 | 930.3 (mb) | 1.004 (mb) | 7.503 (mb) |
| 103 | (n,p) | ( E-thr = 3.761 MeV ) | 3.569 (mb) | 842.0 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.557 MeV ) | 141.6 (μb) | 69.75 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.140 MeV ) | 49.42 (μb) | 24.71 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 105.9 (μb) | 2.700 (mb) | 6.899 (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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