| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 7.014 (b) | 7.594 (b) | 1.083 | − | 4.931 (b) | 6.714 (b) |
| 2 | (n,elastic) | 4.521 (b) | 5.100 (b) | 1.128 | − | 2.400 (b) | 4.876 (b) |
| 4 | (n,inelastic) | ( E-thr = 304.1 keV ) | 798.7 (mb) | 1.803 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.389 MeV ) | 1.578 (b) | 6.539 (mb) | |||
| 17 | (n,3n) | ( E-thr = 12.72 MeV ) | 147.7 (mb) | 25.72 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 222.0 (nb) | 383.8 (μb) | 111.1 (nb) |
| 28 | (n,np) | ( E-thr = 9.324 MeV ) | 49.65 (nb) | 10.86 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.72 MeV ) | 0.000 (b) | 68.00e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 12.82 MeV ) | 0.000 (b) | 116.6e-12 (b) | |||
| 102 | (n,γ) | 2.493 (b) | 2.494 (b) | 1.000 | 14.72 (b) | 1.027 (mb) | 27.18 (mb) |
| 103 | (n,p) | ( E-thr = 4.143 MeV ) | 1.981 (mb) | 455.9 (nb) | |||
| 104 | (n,d) | ( E-thr = 6.998 MeV ) | 57.24 (μb) | 71.12 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.492 MeV ) | 52.39 (μb) | 43.90 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 8.485 (μb) | 1.995 (mb) | 854.1 (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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