| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.245 (b) | 5.889 (b) | 1.123 | − | 4.480 (b) | 5.572 (b) |
| 2 | (n,elastic) | 5.018 (b) | 5.662 (b) | 1.128 | − | 2.387 (b) | 4.133 (b) |
| 4 | (n,inelastic) | ( E-thr = 377.2 keV ) | 412.7 (mb) | 1.405 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.886 MeV ) | 1.675 (b) | 2.096 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.10 MeV ) | − | 4.281 (μb) | |||
| 22 | (n,na) | ( E-thr = 4.464 MeV ) | 5.884 (μb) | 4.092 (nb) | |||
| 28 | (n,np) | ( E-thr = 10.62 MeV ) | 984.4 (nb) | 5.233 (nb) | |||
| 102 | (n,γ) | 227.0 (mb) | 226.8 (mb) | 0.999 | 2.813 (b) | 1.031 (mb) | 27.78 (mb) |
| 103 | (n,p) | ( E-thr = 4.665 MeV ) | 4.267 (mb) | 1.159 (μb) | |||
| 104 | (n,d) | ( E-thr = 8.284 MeV ) | 3.000 (μb) | 7.102 (nb) | |||
| 105 | (n,t) | ( E-thr = 10.28 MeV ) | 44.76 (nb) | 1.699 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.782 (μb) | 812.0 (μb) | 238.1 (nb) |
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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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