| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 58.31 (b) | 61.46 (b) | 1.054 | − | 5.317 (b) | 6.890 (b) |
| 2 | (n,elastic) | 23.41 (b) | 26.40 (b) | 1.128 | − | 2.613 (b) | 4.127 (b) |
| 4 | (n,inelastic) | ( E-thr = 67.11 keV ) | 544.8 (mb) | 2.686 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.404 MeV ) | 2.145 (b) | 9.544 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.76 MeV ) | 9.028 (mb) | 8.556 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 40.73 (nb) | 100.9 (μb) | 33.51 (nb) |
| 28 | (n,np) | ( E-thr = 6.353 MeV ) | 56.62 (μb) | 33.64 (nb) | |||
| 32 | (n,nd) | ( E-thr = 11.23 MeV ) | 0.000 (b) | 46.73e-12 (b) | |||
| 102 | (n,γ) | 34.90 (b) | 35.06 (b) | 1.005 | 160.9 (b) | 762.8 (μb) | 66.83 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 49.54 (μb) | 5.103 (mb) | 3.141 (μb) |
| 104 | (n,d) | ( E-thr = 4.115 MeV ) | 630.7 (μb) | 153.7 (nb) | |||
| 105 | (n,t) | ( E-thr = 4.940 MeV ) | 38.77 (μb) | 14.00 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 3.524 MeV ) | 15.30e-15 (b) | 273.9e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 39.81 (μb) | 1.205 (mb) | 3.329 (μb) |
|
These cross sections are calculated from JENDL-4.0 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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