| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 117.0 (b) | 117.3 (b) | 1.003 | − | 5.345 (b) | 6.797 (b) |
| 2 | (n,elastic) | 8.369 (b) | 9.387 (b) | 1.122 | − | 2.609 (b) | 4.873 (b) |
| 4 | (n,inelastic) | ( E-thr = 336.5 keV ) | 954.6 (mb) | 1.800 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.044 MeV ) | 1.770 (b) | 2.950 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.96 MeV ) | 0.000 (b) | 14.05 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 17.12 (μb) | 1.014 (mb) | 776.3 (nb) |
| 28 | (n,np) | ( E-thr = 8.335 MeV ) | 17.94 (μb) | 26.14 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.33 MeV ) | 0.000 (b) | 52.73e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.05 MeV ) | 0.000 (b) | 19.63e-12 (b) | |||
| 102 | (n,γ) | 108.6 (b) | 107.9 (b) | 0.994 | 324.8 (b) | 1.330 (mb) | 118.2 (mb) |
| 103 | (n,p) | ( E-thr = 2.735 MeV ) | 5.379 (mb) | 1.559 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.010 MeV ) | 225.7 (μb) | 102.9 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.101 MeV ) | 44.43 (μb) | 30.21 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 52.90 (μb) | 2.928 (mb) | 4.697 (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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