| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 34.65 (b) | 35.23 (b) | 1.017 | − | 4.975 (b) | 5.875 (b) |
| 2 | (n,elastic) | 4.337 (b) | 4.896 (b) | 1.129 | − | 3.291 (b) | 4.479 (b) |
| 4 | (n,inelastic) | ( E-thr = 28.02 keV ) | 213.3 (mb) | 1.331 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.916 MeV ) | 1.464 (b) | 1.620 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.80 MeV ) | − | 1.302 (μb) | |||
| 22 | (n,na) | ( E-thr = 2.696 MeV ) | 29.07 (μb) | 12.45 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.860 MeV ) | 1.294 (mb) | 279.3 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.38 MeV ) | 0.000 (b) | 142.6e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.49 MeV ) | 0.000 (b) | 19.43e-12 (b) | |||
| 102 | (n,γ) | 30.32 (b) | 30.33 (b) | 1.000 | 33.25 (b) | 1.001 (mb) | 63.00 (mb) |
| 103 | (n,p) | ( E-thr = 721.1 keV ) | 3.117 (mb) | 2.077 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.531 MeV ) | 369.9 (μb) | 113.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.150 MeV ) | 8.229 (μb) | 14.01 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 9.327 (μb) | 1.497 (mb) | 719.9 (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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