| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 29.90 (b) | 33.76 (b) | 1.129 | − | 5.297 (b) | 6.658 (b) |
| 2 | (n,elastic) | 29.47 (b) | 33.28 (b) | 1.129 | − | 2.834 (b) | 5.288 (b) |
| 4 | (n,inelastic) | ( E-thr = 438.7 keV ) | 321.1 (mb) | 1.357 (b) | |||
| 16 | (n,2n) | ( E-thr = 7.528 MeV ) | 2.137 (b) | 5.199 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.55 MeV ) | 1.531 (mb) | 7.510 (μb) | |||
| 22 | (n,na) | ( E-thr = 503.4 keV ) | 352.7 (nb) | 238.3e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 9.251 MeV ) | 38.81 (nb) | 1.174 (nb) | |||
| 102 | (n,γ) | 431.6 (mb) | 478.9 (mb) | 1.110 | 2.725 (b) | 290.3 (nb) | 8.517 (mb) |
| 103 | (n,p) | ( E-thr = 3.732 MeV ) | 282.5 (μb) | 84.22 (nb) | |||
| 104 | (n,d) | ( E-thr = 7.015 MeV ) | 12.99 (μb) | 12.02 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 13.84 (nb) | 7.157 (μb) | 2.565 (nb) |
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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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