| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 68.85 (b) | 69.69 (b) | 1.012 | − | 4.295 (b) | 5.714 (b) |
| 2 | (n,elastic) | 5.205 (b) | 5.864 (b) | 1.127 | − | 2.545 (b) | 4.013 (b) |
| 4 | (n,inelastic) | ( E-thr = 88.82 keV ) | 359.9 (mb) | 1.597 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.277 MeV ) | 1.366 (b) | 941.5 (μb) | |||
| 17 | (n,3n) | ( E-thr = 16.61 MeV ) | − | 173.8 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.831 MeV ) | 561.9 (μb) | 209.1 (nb) | |||
| 28 | (n,np) | ( E-thr = 5.835 MeV ) | 5.688 (mb) | 2.944 (μb) | |||
| 102 | (n,γ) | 63.65 (b) | 63.82 (b) | 1.003 | 762.7 (b) | 66.57 (μb) | 102.6 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 2.771 (mb) | 14.35 (mb) | 302.3 (μb) |
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 195.6 (μb) | 4.090 (mb) | 10.46 (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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