| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.012 (kb) | 3.017 (kb) | 1.002 | − | 5.123 (b) | 6.644 (b) |
| 2 | (n,elastic) | 10.03 (b) | 11.32 (b) | 1.129 | − | 2.566 (b) | 4.143 (b) |
| 4 | (n,inelastic) | ( E-thr = 105.0 keV ) | 612.9 (mb) | 2.296 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.712 MeV ) | 1.923 (b) | 2.090 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.88 MeV ) | − | 564.1 (nb) | |||
| 22 | (n,na) | 19.78e-27 (b) | 20.09e-27 (b) | 0.000 | 64.54 (μb) | 1.190 (mb) | 2.336 (μb) |
| 24 | (n,2na) | ( E-thr = 5.479 MeV ) | 97.46 (nb) | 658.3e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 5.766 MeV ) | 591.8 (μb) | 164.4 (nb) | |||
| 32 | (n,nd) | ( E-thr = 12.01 MeV ) | 1.246e-18 (b) | 7.641e-12 (b) | |||
| 41 | (n,2np) | ( E-thr = 14.25 MeV ) | − | 544.9e-15 (b) | |||
| 102 | (n,γ) | 3.001 (kb) | 3.003 (kb) | 1.001 | 1.368 (kb) | 1.052 (mb) | 203.5 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 206.9 (μb) | 11.88 (mb) | 11.70 (μb) |
| 104 | (n,d) | ( E-thr = 3.529 MeV ) | 1.031 (mb) | 235.0 (nb) | |||
| 105 | (n,t) | ( E-thr = 5.718 MeV ) | 5.977 (μb) | 2.871 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 2.884 MeV ) | 53.55e-12 (b) | 601.1e-15 (b) | |||
| 107 | (n,a) | 5.002 (mb) | 5.005 (mb) | 1.001 | 7.875 (mb) | 7.620 (mb) | 75.60 (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 :
|