| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 394.8 (b) | 393.8 (b) | 0.998 | − | 5.258 (b) | 6.653 (b) |
| 2 | (n,elastic) | 24.36 (b) | 27.29 (b) | 1.121 | − | 2.783 (b) | 4.935 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.568 keV ) | 304.6 (mb) | 1.692 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.256 MeV ) | 2.165 (b) | 6.473 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.55 MeV ) | 105.2 (μb) | 4.217 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 2.010 (nb) | 3.980 (μb) | 1.782 (nb) |
| 28 | (n,np) | ( E-thr = 6.603 MeV ) | 8.043 (μb) | 9.742 (nb) | |||
| 102 | (n,γ) | 370.4 (b) | 366.5 (b) | 0.989 | 88.35 (b) | 322.3 (nb) | 20.14 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 15.91 (μb) | 2.025 (mb) | 1.120 (μb) |
| 104 | (n,d) | ( E-thr = 4.367 MeV ) | 201.6 (μb) | 58.59 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 2.484 (μb) | 168.2 (μb) | 163.5 (nb) |
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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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