| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 31.48 (b) | 31.82 (b) | 1.011 | − | 5.088 (b) | 6.308 (b) |
| 2 | (n,elastic) | 2.357 (b) | 2.655 (b) | 1.126 | − | 2.917 (b) | 5.424 (b) |
| 4 | (n,inelastic) | ( E-thr = 666.8 keV ) | 141.6 (mb) | 776.6 (mb) | |||
| 16 | (n,2n) | ( E-thr = 5.472 MeV ) | 2.022 (b) | 29.10 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.73 MeV ) | − | 3.734 (μb) | |||
| 22 | (n,na) | ( E-thr = 127.8 keV ) | 279.0 (μb) | 84.25 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.472 MeV ) | 53.13 (μb) | 52.78 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.35 MeV ) | 361.2e-18 (b) | 3.490 (nb) | |||
| 33 | (n,nt) | ( E-thr = 13.96 MeV ) | 0.000 (b) | 3.460e-12 (b) | |||
| 102 | (n,γ) | 29.13 (b) | 29.16 (b) | 1.001 | 502.7 (b) | 1.001 (mb) | 72.89 (mb) |
| 103 | (n,p) | ( E-thr = 1.659 MeV ) | 3.650 (mb) | 1.242 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.145 MeV ) | 779.3 (μb) | 186.1 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.118 MeV ) | 345.3 (μb) | 83.42 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 233.3 (μb) | 1.762 (mb) | 60.51 (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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