| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.110 (Mb) | 3.701 (Mb) | 1.190 | − | 4.907 (b) | 5.915 (b) |
| 2 | (n,elastic) | 332.2 (kb) | 481.1 (kb) | 1.448 | − | 2.845 (b) | 4.747 (b) |
| 4 | (n,inelastic) | ( E-thr = 290.6 keV ) | 173.2 (mb) | 1.155 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.411 MeV ) | 1.877 (b) | 8.356 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.03 MeV ) | − | 2.435 (μb) | |||
| 22 | (n,na) | ( E-thr = 3.660 MeV ) | 3.513 (μb) | 2.146 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.706 MeV ) | 19.90 (μb) | 45.86 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.77 MeV ) | 144.9e-36 (b) | 18.47e-12 (b) | |||
| 102 | (n,γ) | 2.778 (Mb) | 3.219 (Mb) | 1.159 | 7.914 (kb) | 889.0 (μb) | 3.842 (mb) |
| 103 | (n,p) | ( E-thr = 1.859 MeV ) | 9.666 (mb) | 5.687 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.464 MeV ) | 286.8 (μb) | 78.41 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.464 MeV ) | 5.500 (μb) | 3.169 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 10.41 MeV ) | 355.0e-21 (b) | 579.0e-18 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.703 (μb) | 484.4 (μb) | 544.8 (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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