| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 38.04 (b) | 38.09 (b) | 1.001 | − | 5.224 (b) | 6.722 (b) |
| 2 | (n,elastic) | 146.8 (mb) | 161.9 (mb) | 1.103 | − | 2.323 (b) | 4.253 (b) |
| 4 | (n,inelastic) | ( E-thr = 123.3 keV ) | 430.5 (mb) | 2.423 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.241 MeV ) | 2.432 (b) | 9.232 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.02 MeV ) | 33.78 (mb) | 17.14 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 24.08 (nb) | 7.052 (μb) | 3.635 (nb) |
| 28 | (n,np) | ( E-thr = 8.430 MeV ) | 1.644 (μb) | 4.809 (nb) | |||
| 102 | (n,γ) | 37.90 (b) | 37.93 (b) | 1.001 | 346.8 (b) | 1.000 (mb) | 35.50 (mb) |
| 103 | (n,p) | ( E-thr = 3.129 MeV ) | 3.129 (mb) | 832.4 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.193 MeV ) | 114.4 (μb) | 29.96 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 6.971 (μb) | 1.434 (mb) | 664.9 (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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