| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.519 (b) | 7.231 (b) | 1.109 | − | 4.480 (b) | 5.578 (b) |
| 2 | (n,elastic) | 5.549 (b) | 6.262 (b) | 1.128 | − | 2.371 (b) | 4.477 (b) |
| 4 | (n,inelastic) | ( E-thr = 638.7 keV ) | 838.3 (mb) | 916.4 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.97 MeV ) | 841.4 (mb) | 172.9 (μb) | |||
| 17 | (n,3n) | ( E-thr = 19.62 MeV ) | − | 48.81e-12 (b) | |||
| 22 | (n,na) | ( E-thr = 1.643 MeV ) | 19.97 (mb) | 6.078 (μb) | |||
| 28 | (n,np) | ( E-thr = 7.420 MeV ) | 216.3 (mb) | 41.54 (μb) | |||
| 32 | (n,nd) | ( E-thr = 15.18 MeV ) | − | 10.72e-12 (b) | |||
| 102 | (n,γ) | 969.8 (mb) | 969.6 (mb) | 1.000 | 10.72 (b) | 1.701 (mb) | 175.4 (mb) |
| 103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 17.76 (mb) | 87.00 (mb) | 1.646 (mb) |
| 104 | (n,d) | ( E-thr = 5.088 MeV ) | 2.316 (mb) | 505.7 (nb) | |||
| 105 | (n,t) | ( E-thr = 8.940 MeV ) | 5.068 (μb) | 8.702 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 4.631 MeV ) | 23.94 (nb) | 257.7e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 47.17 (mb) | 102.0 (mb) | 6.070 (mb) |
| 111 | (n,2p) | ( E-thr = 5.270 MeV ) | 48.03 (μb) | 12.08 (nb) | |||
|
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 :
|