| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 42.13 (b) | 44.84 (b) | 1.064 | − | 4.976 (b) | 5.883 (b) |
| 2 | (n,elastic) | 21.12 (b) | 23.82 (b) | 1.127 | − | 3.457 (b) | 4.255 (b) |
| 4 | (n,inelastic) | ( E-thr = 39.91 keV ) | 239.4 (mb) | 1.580 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.966 MeV ) | 1.268 (b) | 4.721 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.66 MeV ) | − | 458.7 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.117 MeV ) | 66.07 (μb) | 22.87 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.322 MeV ) | 93.00 (μb) | 54.42 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.88 MeV ) | 0.000 (b) | 297.3e-12 (b) | |||
| 102 | (n,γ) | 21.01 (b) | 21.02 (b) | 1.001 | 255.3 (b) | 1.000 (mb) | 40.17 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 167.8 (μb) | 6.696 (mb) | 8.906 (μb) |
| 104 | (n,d) | ( E-thr = 5.994 MeV ) | 813.8 (μb) | 182.2 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.644 MeV ) | 18.47 (μb) | 13.90 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.325 MeV ) | 7.366e-15 (b) | 6.289e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 82.74 (μb) | 3.034 (mb) | 10.18 (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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