| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.184 (b) | 6.980 (b) | 1.129 | − | 3.842 (b) | 5.744 (b) |
| 2 | (n,elastic) | 6.164 (b) | 6.959 (b) | 1.129 | − | 2.115 (b) | 5.090 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.611 MeV ) | 229.3 (mb) | 641.8 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.914 MeV ) | 1.495 (b) | 4.073 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.46 MeV ) | − | 2.490 (μb) | |||
| 22 | (n,na) | ( E-thr = 5.027 MeV ) | 39.19 (μb) | 21.09 (nb) | |||
| 28 | (n,np) | ( E-thr = 11.63 MeV ) | 261.1 (nb) | 10.99 (nb) | |||
| 102 | (n,γ) | 20.32 (mb) | 20.33 (mb) | 1.001 | 4.231 (b) | 337.5 (μb) | 8.155 (mb) |
| 103 | (n,p) | ( E-thr = 6.298 MeV ) | 2.602 (mb) | 563.4 (nb) | |||
| 104 | (n,d) | ( E-thr = 9.292 MeV ) | 397.1 (nb) | 5.558 (nb) | |||
| 105 | (n,t) | ( E-thr = 10.04 MeV ) | 1.220 (μb) | 4.885 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.963 (μb) | 2.276 (mb) | 751.1 (nb) |
|
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 :
|