| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 10.35 (b) | 10.77 (b) | 1.041 | − | 5.078 (b) | 6.259 (b) |
| 2 | (n,elastic) | 3.314 (b) | 3.741 (b) | 1.129 | − | 2.745 (b) | 4.867 (b) |
| 4 | (n,inelastic) | ( E-thr = 468.2 keV ) | 767.3 (mb) | 1.111 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.878 MeV ) | 1.542 (b) | 601.5 (μb) | |||
| 17 | (n,3n) | ( E-thr = 17.43 MeV ) | − | 246.1 (nb) | |||
| 22 | (n,na) | ( E-thr = 1.021 MeV ) | 2.140 (mb) | 576.5 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.739 MeV ) | 759.2 (μb) | 160.8 (nb) | |||
| 102 | (n,γ) | 7.003 (b) | 7.006 (b) | 1.001 | 31.20 (b) | 3.813 (mb) | 274.1 (mb) |
| 103 | (n,p) | ( E-thr = 499.3 keV ) | 12.75 (mb) | 32.13 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.412 MeV ) | 375.3 (μb) | 104.5 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.529 MeV ) | 1.370 (μb) | 5.585 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 5.469 MeV ) | 12.81e-12 (b) | 10.82e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 459.6 (μb) | 4.415 (mb) | 32.99 (μb) |
|
These cross sections are calculated from JENDL-4.0 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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