| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 10.93 (b) | 12.15 (b) | 1.112 | − | 4.931 (b) | 6.713 (b) |
| 2 | (n,elastic) | 9.529 (b) | 10.75 (b) | 1.128 | − | 2.474 (b) | 5.103 (b) |
| 4 | (n,inelastic) | ( E-thr = 456.9 keV ) | 752.6 (mb) | 1.569 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.621 MeV ) | 1.682 (b) | 5.233 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.42 MeV ) | 13.38 (mb) | 12.25 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 6.919 (μb) | 1.144 (mb) | 496.4 (nb) |
| 28 | (n,np) | ( E-thr = 8.651 MeV ) | 23.81 (μb) | 46.63 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.32 MeV ) | 0.000 (b) | 174.0e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 12.90 MeV ) | 0.000 (b) | 87.69e-12 (b) | |||
| 102 | (n,γ) | 1.400 (b) | 1.400 (b) | 1.000 | 2.906 (b) | 1.206 (mb) | 35.60 (mb) |
| 103 | (n,p) | ( E-thr = 3.323 MeV ) | 3.469 (mb) | 936.6 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.325 MeV ) | 335.4 (μb) | 162.4 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.096 MeV ) | 94.41 (μb) | 48.51 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 33.02 (μb) | 2.747 (mb) | 2.541 (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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