| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 4.553 (kb) | 4.115 (kb) | 0.904 | − | 5.200 (b) | 6.853 (b) |
| 2 | (n,elastic) | 6.940 (b) | 7.473 (b) | 1.077 | − | 2.870 (b) | 4.702 (b) |
| 4 | (n,inelastic) | ( E-thr = 21.64 keV ) | 548.9 (mb) | 1.839 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.035 MeV ) | 1.765 (b) | 2.095 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.51 MeV ) | − | 2.129 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 0.000 (b) | 765.5 (μb) | 197.0 (nb) |
| 28 | (n,np) | ( E-thr = 4.918 MeV ) | 2.307 (mb) | 824.7 (nb) | |||
| 102 | (n,γ) | 4.546 (kb) | 4.108 (kb) | 0.904 | 2.222 (kb) | 1.006 (mb) | 311.2 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 361.8 (μb) | 6.555 (mb) | 22.85 (μb) |
| 107 | (n,a) | 4.637 (μb) | 4.215 (μb) | 0.909 | 443.2 (μb) | 5.219 (mb) | 35.74 (μb) |
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These cross sections are calculated from JENDL-3.2 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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