| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 189.0 (b) | 189.1 (b) | 1.000 | − | 3.841 (b) | 4.939 (b) |
| 2 | (n,elastic) | 9.135 (b) | 10.28 (b) | 1.125 | − | 1.522 (b) | 3.714 (b) |
| 4 | (n,inelastic) | ( E-thr = 9.514 keV ) | 1.319 (b) | 1.195 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.561 MeV ) | 981.1 (mb) | 2.803 (mb) | |||
| 17 | (n,3n) | ( E-thr = 18.65 MeV ) | − | 2.609 (nb) | |||
| 22 | (n,na) | ( E-thr = 6.565 MeV ) | 11.13 (μb) | 15.00 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.899 MeV ) | 323.4 (μb) | 157.2 (nb) | |||
| 32 | (n,nd) | ( E-thr = 15.25 MeV ) | − | 105.7e-12 (b) | |||
| 102 | (n,γ) | 179.9 (b) | 178.8 (b) | 0.994 | 147.5 (b) | 1.001 (mb) | 24.29 (mb) |
| 103 | (n,p) | ( E-thr = 179.3 keV ) | 12.49 (mb) | 78.13 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.561 MeV ) | 1.251 (mb) | 270.6 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.991 MeV ) | 965.7 (nb) | 6.696 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 10.58 MeV ) | 3.813e-18 (b) | 2.906e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 126.0 (μb) | 4.395 (mb) | 12.70 (μb) |
| 111 | (n,2p) | ( E-thr = 9.018 MeV ) | 129.0e-12 (b) | 2.326e-12 (b) | |||
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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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