| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 9.045 (b) | 9.891 (b) | 1.094 | − | 4.110 (b) | 5.874 (b) |
| 2 | (n,elastic) | 6.557 (b) | 7.402 (b) | 1.129 | − | 2.286 (b) | 4.297 (b) |
| 4 | (n,inelastic) | ( E-thr = 485.9 keV ) | 342.9 (mb) | 1.528 (b) | |||
| 16 | (n,2n) | ( E-thr = 6.892 MeV ) | 1.460 (b) | 4.529 (mb) | |||
| 17 | (n,3n) | ( E-thr = 16.14 MeV ) | − | 442.8 (nb) | |||
| 22 | (n,na) | ( E-thr = 2.878 MeV ) | 677.7 (μb) | 157.4 (nb) | |||
| 28 | (n,np) | ( E-thr = 9.322 MeV ) | 366.1 (μb) | 155.8 (nb) | |||
| 32 | (n,nd) | ( E-thr = 14.04 MeV ) | − | 123.8e-12 (b) | |||
| 102 | (n,γ) | 2.488 (b) | 2.489 (b) | 1.000 | 16.60 (b) | 902.3 (μb) | 44.25 (mb) |
| 103 | (n,p) | ( E-thr = 1.164 MeV ) | 15.60 (mb) | 18.24 (μb) | |||
| 104 | (n,d) | ( E-thr = 7.074 MeV ) | 601.8 (μb) | 147.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.717 MeV ) | 44.45 (μb) | 11.23 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 8.834 MeV ) | 604.9e-15 (b) | 2.299e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 502.8 (μb) | 6.540 (mb) | 37.74 (μb) |
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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 :
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