| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 17.54 (b) | 19.18 (b) | 1.094 | − | 4.799 (b) | 6.014 (b) |
| 2 | (n,elastic) | 12.73 (b) | 14.37 (b) | 1.129 | − | 2.637 (b) | 4.440 (b) |
| 4 | (n,inelastic) | ( E-thr = 540.2 keV ) | 374.0 (mb) | 1.547 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.328 MeV ) | 1.774 (b) | 1.301 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.29 MeV ) | − | 305.1 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.259 MeV ) | 148.7 (μb) | 47.39 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.735 MeV ) | 290.3 (μb) | 144.6 (nb) | |||
| 32 | (n,nd) | ( E-thr = 15.40 MeV ) | − | 375.4e-15 (b) | |||
| 102 | (n,γ) | 4.811 (b) | 4.814 (b) | 1.001 | 28.79 (b) | 1.026 (mb) | 26.38 (mb) |
| 103 | (n,p) | ( E-thr = 2.184 MeV ) | 15.47 (mb) | 14.52 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.493 MeV ) | 504.5 (μb) | 126.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 9.092 MeV ) | 234.7 (nb) | 1.170 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.810 MeV ) | 80.27e-15 (b) | 33.55e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 30.30 (μb) | 1.040 (mb) | 1.842 (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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