| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 49.47 (b) | 50.56 (b) | 1.022 | − | 3.426 (b) | 4.795 (b) |
| 2 | (n,elastic) | 8.460 (b) | 9.549 (b) | 1.129 | − | 1.637 (b) | 2.725 (b) |
| 4 | (n,inelastic) | ( E-thr = 164.0 keV ) | 480.3 (mb) | 2.036 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.516 MeV ) | 1.262 (b) | 2.898 (mb) | |||
| 17 | (n,3n) | ( E-thr = 18.82 MeV ) | − | 2.911 (nb) | |||
| 22 | (n,na) | ( E-thr = 5.802 MeV ) | 292.8 (μb) | 81.90 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.725 MeV ) | 2.208 (mb) | 506.1 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.90 MeV ) | − | 121.2e-12 (b) | |||
| 102 | (n,γ) | 41.01 (b) | 41.01 (b) | 1.000 | 31.26 (b) | 1.269 (mb) | 28.44 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 8.847 (mb) | 35.22 (mb) | 1.211 (mb) |
| 104 | (n,d) | ( E-thr = 7.471 MeV ) | 2.683 (mb) | 532.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.556 MeV ) | 1.768 (μb) | 1.169 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 9.729 MeV ) | 5.599e-12 (b) | 4.427e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.249 (mb) | 3.085 (mb) | 179.6 (μb) |
|
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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