| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 3.995 (b) | 4.484 (b) | 1.122 | − | 4.639 (b) | 5.521 (b) |
| 2 | (n,elastic) | 3.811 (b) | 4.301 (b) | 1.128 | − | 2.930 (b) | 4.792 (b) |
| 4 | (n,inelastic) | ( E-thr = 1.150 MeV ) | 172.3 (mb) | 715.2 (mb) | |||
| 16 | (n,2n) | ( E-thr = 8.893 MeV ) | 1.535 (b) | 1.818 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.12 MeV ) | − | 3.054 (μb) | |||
| 22 | (n,na) | ( E-thr = 5.708 MeV ) | 97.86 (nb) | 727.0e-12 (b) | |||
| 28 | (n,np) | ( E-thr = 11.49 MeV ) | 357.0e-18 (b) | 2.647 (nb) | |||
| 102 | (n,γ) | 183.7 (mb) | 183.3 (mb) | 0.998 | 931.1 (mb) | 1.001 (mb) | 10.33 (mb) |
| 103 | (n,p) | ( E-thr = 5.610 MeV ) | 714.5 (μb) | 153.0 (nb) | |||
| 104 | (n,d) | ( E-thr = 9.163 MeV ) | 345.7e-12 (b) | 2.748 (nb) | |||
| 105 | (n,t) | ( E-thr = 11.21 MeV ) | 124.6e-18 (b) | 644.3e-12 (b) | |||
| 107 | (n,a) | ( E-thr = 62.30 keV ) | 44.19 (μb) | 14.83 (nb) | |||
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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 :
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