| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 29.58 (b) | 30.77 (b) | 1.040 | − | 5.206 (b) | 6.801 (b) |
| 2 | (n,elastic) | 8.869 (b) | 9.992 (b) | 1.127 | − | 2.550 (b) | 4.369 (b) |
| 4 | (n,inelastic) | ( E-thr = 100.7 keV ) | 592.5 (mb) | 2.363 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.099 MeV ) | 2.054 (b) | 3.160 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.78 MeV ) | − | 2.762 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 1.081 (μb) | 69.91 (μb) | 56.45 (nb) |
| 28 | (n,np) | ( E-thr = 7.124 MeV ) | 86.18 (μb) | 53.21 (nb) | |||
| 102 | (n,γ) | 20.72 (b) | 20.78 (b) | 1.003 | 628.4 (b) | 1.000 (mb) | 65.69 (mb) |
| 103 | (n,p) | ( E-thr = 1.028 MeV ) | 4.736 (mb) | 2.300 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.888 MeV ) | 913.2 (μb) | 200.3 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 43.68 (μb) | 2.097 (mb) | 4.119 (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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