| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 8.374 (b) | 9.124 (b) | 1.089 | − | 4.152 (b) | 5.940 (b) |
| 2 | (n,elastic) | 5.805 (b) | 6.554 (b) | 1.129 | − | 2.256 (b) | 4.662 (b) |
| 4 | (n,inelastic) | ( E-thr = 206.3 keV ) | 525.6 (mb) | 1.248 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.892 MeV ) | 1.207 (b) | 1.750 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.36 MeV ) | − | 371.9 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.090 MeV ) | 1.217 (mb) | 612.2 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.543 MeV ) | 107.6 (mb) | 33.21 (μb) | |||
| 32 | (n,nd) | ( E-thr = 13.78 MeV ) | 0.000 (b) | 63.18e-12 (b) | |||
| 102 | (n,γ) | 2.569 (b) | 2.570 (b) | 1.000 | 23.04 (b) | 1.006 (mb) | 26.48 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 17.98 (mb) | 41.76 (mb) | 1.667 (mb) |
| 104 | (n,d) | ( E-thr = 5.294 MeV ) | 1.902 (mb) | 467.7 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.456 MeV ) | 32.15 (μb) | 10.05 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.951 MeV ) | 28.36 (nb) | 72.42e-12 (b) | |||
| 107 | (n,a) | 4.894 (μb) | 4.893 (μb) | 1.000 | 1.637 (mb) | 10.96 (mb) | 136.8 (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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