| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 2.839 (b) | 3.180 (b) | 1.120 | − | 1.824 (b) | 3.090 (b) |
| 2 | (n,elastic) | 2.648 (b) | 2.989 (b) | 1.129 | − | 683.5 (mb) | 2.717 (b) |
| 4 | (n,inelastic) | ( E-thr = 608.7 keV ) | 246.7 (mb) | 351.5 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.628 MeV ) | 710.1 (mb) | 883.9 (μb) | |||
| 22 | (n,na) | ( E-thr = 10.28 MeV ) | 6.484 (mb) | 2.146 (μb) | |||
| 28 | (n,np) | ( E-thr = 12.55 MeV ) | 674.8 (μb) | 1.168 (μb) | |||
| 102 | (n,γ) | 190.4 (mb) | 190.5 (mb) | 1.001 | 98.67 (mb) | 6.961 (μb) | 345.7 (μb) |
| 103 | (n,p) | ( E-thr = 3.176 MeV ) | 48.98 (mb) | 1.681 (mb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 156.2 (mb) | 127.0 (mb) | 16.56 (mb) |
|
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 :
|