| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 203.7 (b) | 207.9 (b) | 1.021 | − | 4.563 (b) | 5.793 (b) |
| 2 | (n,elastic) | 2.538 (b) | 2.840 (b) | 1.119 | − | 2.551 (b) | 4.573 (b) |
| 4 | (n,inelastic) | ( E-thr = 339.2 keV ) | 432.4 (mb) | 1.046 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.115 MeV ) | 1.555 (b) | 1.094 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.45 MeV ) | − | 248.9 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.774 MeV ) | 64.09 (μb) | 22.96 (nb) | |||
| 28 | (n,np) | ( E-thr = 6.864 MeV ) | 3.210 (mb) | 783.2 (nb) | |||
| 32 | (n,nd) | ( E-thr = 13.74 MeV ) | 33.62e-36 (b) | 51.96e-12 (b) | |||
| 102 | (n,γ) | 201.2 (b) | 205.1 (b) | 1.020 | 3.209 (kb) | 948.1 (μb) | 171.6 (mb) |
| 103 | (n,p) | ( E-thr = 669.6 keV ) | 21.44 (mb) | 24.49 (μb) | |||
| 104 | (n,d) | ( E-thr = 4.620 MeV ) | 931.2 (μb) | 209.2 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.430 MeV ) | 10.36 (μb) | 5.993 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 9.446 MeV ) | 1.332e-15 (b) | 42.58e-15 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 22.60 (μb) | 1.880 (mb) | 1.376 (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 :
|