| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.798 (b) | 4.270 (b) | 1.124 | − | 4.990 (b) | 6.075 (b) |
| 2 | (n,elastic) | 3.543 (b) | 3.998 (b) | 1.128 | − | 2.937 (b) | 5.125 (b) |
| 4 | (n,inelastic) | ( E-thr = 459.4 keV ) | 327.5 (mb) | 939.1 (mb) | |||
| 16 | (n,2n) | ( E-thr = 8.339 MeV ) | 1.722 (b) | 2.724 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.16 MeV ) | − | 2.817 (μb) | |||
| 22 | (n,na) | ( E-thr = 3.103 MeV ) | 25.37 (μb) | 14.46 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.483 MeV ) | 191.8 (μb) | 63.38 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.21 MeV ) | 0.000 (b) | 277.7e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.48 MeV ) | 0.000 (b) | 40.73e-12 (b) | |||
| 102 | (n,γ) | 250.1 (mb) | 250.1 (mb) | 1.000 | 355.8 (mb) | 1.001 (mb) | 4.980 (mb) |
| 103 | (n,p) | ( E-thr = 3.589 MeV ) | 1.175 (mb) | 240.1 (nb) | |||
| 104 | (n,d) | ( E-thr = 5.156 MeV ) | 310.1 (μb) | 113.6 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.980 MeV ) | 15.00 (μb) | 21.68 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.788 (μb) | 663.4 (μb) | 218.4 (nb) |
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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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