| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 5.853 (b) | 6.607 (b) | 1.129 | − | 4.336 (b) | 5.661 (b) |
| 2 | (n,elastic) | 5.838 (b) | 6.587 (b) | 1.128 | − | 2.834 (b) | 4.819 (b) |
| 4 | (n,inelastic) | ( E-thr = 841.0 keV ) | 140.2 (mb) | 832.7 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.895 MeV ) | 1.356 (b) | 3.344 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.34 MeV ) | − | 4.040 (μb) | |||
| 22 | (n,na) | ( E-thr = 5.151 MeV ) | 75.33 (μb) | 29.49 (nb) | |||
| 28 | (n,np) | ( E-thr = 11.64 MeV ) | 1.029 (μb) | 19.84 (nb) | |||
| 32 | (n,nd) | ( E-thr = 16.58 MeV ) | − | 946.3e-15 (b) | |||
| 102 | (n,γ) | 15.01 (mb) | 15.01 (mb) | 1.000 | 89.32 (mb) | 1.003 (mb) | 4.211 (mb) |
| 103 | (n,p) | ( E-thr = 5.645 MeV ) | 4.321 (mb) | 1.079 (μb) | |||
| 104 | (n,d) | ( E-thr = 9.304 MeV ) | 10.73 (μb) | 22.06 (nb) | |||
| 105 | (n,t) | ( E-thr = 10.32 MeV ) | 1.450 (μb) | 7.726 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 12.45 (μb) | 1.481 (mb) | 752.6 (nb) |
|
These cross sections are calculated from JENDL-3.3 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 :
|