| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 203.7 (b) | 207.8 (b) | 1.020 | − | 4.639 (b) | 5.526 (b) |
| 2 | (n,elastic) | 2.537 (b) | 2.838 (b) | 1.119 | − | 2.946 (b) | 4.418 (b) |
| 4 | (n,inelastic) | ( E-thr = 339.2 keV ) | 218.0 (mb) | 942.9 (mb) | |||
| 16 | (n,2n) | ( E-thr = 9.120 MeV ) | 1.460 (b) | 960.7 (μb) | |||
| 17 | (n,3n) | ( E-thr = 16.46 MeV ) | − | 815.0 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.770 MeV ) | 134.3 (μb) | 45.51 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.875 MeV ) | 4.652 (mb) | 850.3 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.67 MeV ) | 0.000 (b) | 104.0e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 14.04 MeV ) | − | 5.347e-12 (b) | |||
| 102 | (n,γ) | 201.2 (b) | 205.0 (b) | 1.019 | 3.210 (kb) | 1.021 (mb) | 160.6 (mb) |
| 103 | (n,p) | ( E-thr = 671.4 keV ) | 7.280 (mb) | 7.893 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.544 MeV ) | 350.6 (μb) | 108.1 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.430 MeV ) | 2.515 (μb) | 10.25 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 25.75 (μb) | 1.999 (mb) | 1.441 (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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