| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 15.18 (kb) | 14.07 (kb) | 0.927 | − | 5.363 (b) | 6.817 (b) |
| 2 | (n,elastic) | 50.40 (b) | 48.09 (b) | 0.954 | − | 3.052 (b) | 4.420 (b) |
| 4 | (n,inelastic) | ( E-thr = 4.832 keV ) | 590.4 (mb) | 2.254 (b) | |||
| 16 | (n,2n) | ( E-thr = 5.639 MeV ) | 1.711 (b) | 21.55 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.68 MeV ) | 1.371 (mb) | 7.054 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 522.5 (nb) | 562.4 (μb) | 163.0 (nb) |
| 28 | (n,np) | ( E-thr = 8.373 MeV ) | 1.418 (μb) | 8.696 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.65 MeV ) | 14.69e-18 (b) | 1.857 (nb) | |||
| 33 | (n,nt) | ( E-thr = 12.74 MeV ) | 0.000 (b) | 50.58e-12 (b) | |||
| 102 | (n,γ) | 15.13 (kb) | 14.03 (kb) | 0.927 | 3.408 (kb) | 1.000 (mb) | 119.6 (mb) |
| 103 | (n,p) | ( E-thr = 408.2 keV ) | 3.985 (mb) | 1.840 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.048 MeV ) | 1.065 (mb) | 269.3 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.421 MeV ) | 221.2 (μb) | 79.34 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 28.32 (μb) | 1.668 (mb) | 2.252 (μb) |
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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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