| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 1.070 (kb) | 1.069 (kb) | 0.999 | − | 5.699 (b) | 7.004 (b) |
| 2 | (n,elastic) | 13.96 (b) | 15.69 (b) | 1.124 | − | 3.416 (b) | 5.118 (b) |
| 4 | (n,inelastic) | ( E-thr = 346.6 keV ) | 508.0 (mb) | 1.589 (b) | |||
| 16 | (n,2n) | ( E-thr = 8.668 MeV ) | 1.757 (b) | 1.711 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.19 MeV ) | − | 5.364 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 31.98 (μb) | 1.287 (mb) | 1.313 (μb) |
| 28 | (n,np) | ( E-thr = 7.395 MeV ) | 71.11 (μb) | 33.10 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.09 MeV ) | 0.000 (b) | 45.10e-12 (b) | |||
| 33 | (n,nt) | ( E-thr = 13.30 MeV ) | 0.000 (b) | 2.228e-12 (b) | |||
| 102 | (n,γ) | 1.056 (kb) | 1.054 (kb) | 0.998 | 989.2 (b) | 1.026 (mb) | 292.0 (mb) |
| 103 | (n,p) | ( E-thr = 1.043 MeV ) | 11.35 (mb) | 6.185 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.070 MeV ) | 370.9 (μb) | 107.2 (nb) | |||
| 105 | (n,t) | ( E-thr = 6.867 MeV ) | 21.06 (μb) | 13.88 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.540 MeV ) | 120.2e-15 (b) | 6.734e-12 (b) | |||
| 107 | (n,a) | 6.957 (mb) | 6.971 (mb) | 1.002 | 62.48 (mb) | 4.104 (mb) | 90.74 (μb) |
|
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 :
|