| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 37.74 (b) | 38.10 (b) | 1.009 | − | 2.046 (b) | 2.862 (b) |
| 2 | (n,elastic) | 2.786 (b) | 3.146 (b) | 1.129 | − | 977.4 (mb) | 2.311 (b) |
| 4 | (n,inelastic) | ( E-thr = 30.76 keV ) | 289.9 (mb) | 411.7 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.997 MeV ) | 225.5 (mb) | 537.6 (μb) | |||
| 22 | (n,na) | ( E-thr = 6.600 MeV ) | 112.8 (mb) | 34.59 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.775 MeV ) | 190.0 (mb) | 232.1 (μb) | |||
| 102 | (n,γ) | 30.00 (b) | 30.01 (b) | 1.000 | 13.45 (b) | 4.122 (μb) | 1.546 (mb) |
| 103 | (n,p) | 4.400 (b) | 4.348 (b) | 0.988 | 1.405 (b) | 108.5 (mb) | 27.41 (mb) |
| 107 | (n,a) | 390.0 (mb) | 405.6 (mb) | 1.040 | 1.214 (b) | 142.4 (mb) | 109.9 (mb) |
|
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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