| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 4.831 (b) | 5.233 (b) | 1.083 | − | 2.325 (b) | 3.350 (b) |
| 2 | (n,elastic) | 3.129 (b) | 3.531 (b) | 1.128 | − | 1.407 (b) | 2.430 (b) |
| 4 | (n,inelastic) | ( E-thr = 162.8 keV ) | 415.4 (mb) | 885.1 (mb) | |||
| 16 | (n,2n) | ( E-thr = 9.066 MeV ) | 258.9 (mb) | 129.7 (μb) | |||
| 22 | (n,na) | ( E-thr = 9.148 MeV ) | 285.8 (μb) | 255.6 (nb) | |||
| 28 | (n,np) | ( E-thr = 10.68 MeV ) | 32.85 (mb) | 6.384 (μb) | |||
| 102 | (n,γ) | 1.702 (b) | 1.702 (b) | 1.000 | 1.433 (b) | 35.58 (μb) | 6.330 (mb) |
| 103 | (n,p) | 214.0e-18 (b) | 482.9e-18 (b) | 2.257 | 130.9 (mb) | 135.7 (mb) | 25.09 (mb) |
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 33.16 (mb) | 73.96 (mb) | 3.338 (mb) |
|
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 :
|