| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 10.67 (kb) | 15.81 (kb) | 1.482 | − | 4.777 (b) | 6.449 (b) |
| 2 | (n,elastic) | 19.37 (b) | 48.98 (b) | 2.529 | − | 2.935 (b) | 4.171 (b) |
| 4 | (n,inelastic) | 0.000 (b) | 0.000 (b) | − | 6.052 (b) | 118.2 (mb) | 1.920 (b) |
| 16 | (n,2n) | ( E-thr = 5.946 MeV ) | 1.709 (b) | 19.17 (mb) | |||
| 17 | (n,3n) | ( E-thr = 13.67 MeV ) | 3.592 (mb) | 16.39 (μb) | |||
| 22 | (n,na) | 0.000 (b) | 0.000 (b) | − | 2.118 (μb) | 458.0 (μb) | 184.7 (nb) |
| 28 | (n,np) | ( E-thr = 6.061 MeV ) | 485.5 (μb) | 114.3 (nb) | |||
| 32 | (n,nd) | ( E-thr = 9.068 MeV ) | 330.8 (nb) | 19.31 (nb) | |||
| 33 | (n,nt) | ( E-thr = 10.46 MeV ) | 117.7e-15 (b) | 1.197 (nb) | |||
| 102 | (n,γ) | 10.65 (kb) | 15.76 (kb) | 1.480 | 3.608 (kb) | 1.002 (mb) | 336.3 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 51.23 (μb) | 4.789 (mb) | 3.084 (μb) |
| 104 | (n,d) | ( E-thr = 3.735 MeV ) | 1.444 (mb) | 284.7 (nb) | |||
| 105 | (n,t) | ( E-thr = 2.841 MeV ) | 423.9 (μb) | 88.07 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 6.933 MeV ) | 3.030e-12 (b) | 7.026e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 108.7 (μb) | 1.989 (mb) | 15.35 (μb) |
|
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 :
|