| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 40.72 (kb) | 68.76 (kb) | 1.688 | − | 5.322 (b) | 6.990 (b) |
| 2 | (n,elastic) | 178.8 (b) | 424.3 (b) | 2.373 | − | 3.080 (b) | 4.555 (b) |
| 4 | (n,inelastic) | ( E-thr = 22.65 keV ) | 379.5 (mb) | 2.192 (b) | |||
| 16 | (n,2n) | ( E-thr = 5.916 MeV ) | 1.846 (b) | 23.45 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.12 MeV ) | − | 6.647 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 6.452 (μb) | 1.468 (mb) | 576.1 (nb) |
| 28 | (n,np) | ( E-thr = 7.610 MeV ) | 163.9 (μb) | 88.97 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.23 MeV ) | 693.6e-18 (b) | 4.170 (nb) | |||
| 33 | (n,nt) | ( E-thr = 12.73 MeV ) | 0.000 (b) | 81.96e-12 (b) | |||
| 102 | (n,γ) | 40.54 (kb) | 68.33 (kb) | 1.685 | 3.494 (kb) | 1.006 (mb) | 217.0 (mb) |
| 103 | (n,p) | ( E-thr = 291.5 keV ) | 6.871 (mb) | 3.577 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.284 MeV ) | 3.061 (mb) | 650.9 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.003 MeV ) | 475.7 (μb) | 128.7 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 5.886 MeV ) | 6.249e-12 (b) | 19.50e-12 (b) | |||
| 107 | (n,a) | 30.77 (mb) | 52.14 (mb) | 1.695 | 2.970 (mb) | 2.801 (mb) | 34.29 (μb) |
|
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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