| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.767 (kb) | 3.850 (kb) | 1.022 | − | 5.017 (b) | 6.597 (b) |
| 2 | (n,elastic) | 6.601 (b) | 8.698 (b) | 1.318 | − | 3.251 (b) | 4.585 (b) |
| 4 | (n,inelastic) | ( E-thr = 79.11 keV ) | 217.7 (mb) | 1.890 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.228 MeV ) | 1.543 (b) | 2.666 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.71 MeV ) | − | 6.195 (μb) | |||
| 22 | (n,na) | ( E-thr = 866.5 keV ) | 60.28 (μb) | 18.74 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.708 MeV ) | 195.7 (μb) | 62.30 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.41 MeV ) | 0.000 (b) | 252.7e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 12.09 MeV ) | 12.25e-21 (b) | 75.12e-12 (b) | |||
| 102 | (n,γ) | 3.761 (kb) | 3.841 (kb) | 1.021 | 15.52 (kb) | 1.003 (mb) | 119.6 (mb) |
| 103 | (n,p) | ( E-thr = 852.0 keV ) | 2.763 (mb) | 1.031 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.383 MeV ) | 171.3 (μb) | 60.41 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.182 MeV ) | 10.61 (μb) | 11.94 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.542 (μb) | 1.079 (mb) | 584.6 (nb) |
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These cross sections are calculated from JENDL-3.3 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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