| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.120 (b) | 7.607 (b) | 1.068 | − | 4.537 (b) | 5.611 (b) |
| 2 | (n,elastic) | 3.760 (b) | 4.242 (b) | 1.128 | − | 2.818 (b) | 3.951 (b) |
| 4 | (n,inelastic) | ( E-thr = 128.5 keV ) | 161.6 (mb) | 1.566 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.874 MeV ) | 1.527 (b) | 8.553 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.65 MeV ) | − | 517.8 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.857 MeV ) | 623.6 (μb) | 141.8 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.319 MeV ) | 231.0 (μb) | 86.51 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.82 MeV ) | 0.000 (b) | 248.5e-12 (b) | |||
| 102 | (n,γ) | 3.360 (b) | 3.364 (b) | 1.001 | 100.2 (b) | 1.002 (mb) | 82.57 (mb) |
| 103 | (n,p) | ( E-thr = 850.6 keV ) | 21.31 (mb) | 35.61 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.985 MeV ) | 680.2 (μb) | 150.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.575 MeV ) | 11.42 (μb) | 10.64 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.926 MeV ) | 15.91e-15 (b) | 3.879e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 465.8 (μb) | 5.513 (mb) | 58.79 (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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