| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 25.40 (b) | 26.04 (b) | 1.025 | − | 4.480 (b) | 5.572 (b) |
| 2 | (n,elastic) | 5.151 (b) | 5.812 (b) | 1.128 | − | 2.642 (b) | 3.929 (b) |
| 4 | (n,inelastic) | ( E-thr = 283.2 keV ) | 194.6 (mb) | 1.519 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.166 MeV ) | 1.605 (b) | 6.262 (mb) | |||
| 17 | (n,3n) | ( E-thr = 17.26 MeV ) | − | 259.9 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.920 MeV ) | 589.1 (μb) | 131.2 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.848 MeV ) | 465.3 (μb) | 123.0 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.59 MeV ) | 0.000 (b) | 284.7e-12 (b) | |||
| 102 | (n,γ) | 20.25 (b) | 20.23 (b) | 0.999 | 96.73 (b) | 1.003 (mb) | 114.8 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 2.088 (mb) | 28.82 (mb) | 174.1 (μb) |
| 104 | (n,d) | ( E-thr = 6.516 MeV ) | 978.8 (μb) | 209.0 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.342 MeV ) | 28.45 (μb) | 14.89 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.094 MeV ) | 1.002e-12 (b) | 9.535e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 640.1 (μb) | 6.704 (mb) | 79.52 (μb) |
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These cross sections are calculated from JENDL-3.3 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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