| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 16.35 (b) | 18.19 (b) | 1.112 | − | 2.949 (b) | 3.745 (b) |
| 2 | (n,elastic) | 14.18 (b) | 16.01 (b) | 1.129 | − | 1.455 (b) | 2.998 (b) |
| 4 | (n,inelastic) | ( E-thr = 782.6 keV ) | 567.7 (mb) | 740.5 (mb) | |||
| 16 | (n,2n) | ( E-thr = 10.06 MeV ) | 873.0 (mb) | 317.7 (μb) | |||
| 22 | (n,na) | ( E-thr = 6.875 MeV ) | 820.4 (μb) | 245.5 (nb) | |||
| 28 | (n,np) | ( E-thr = 7.560 MeV ) | 15.12 (mb) | 18.67 (μb) | |||
| 32 | (n,nd) | ( E-thr = 15.11 MeV ) | − | 966.0e-12 (b) | |||
| 102 | (n,γ) | 2.169 (b) | 2.170 (b) | 1.000 | 2.220 (b) | 500.3 (μb) | 6.688 (mb) |
| 103 | (n,p) | ( E-thr = 1.370 MeV ) | 22.74 (mb) | 567.8 (μb) | |||
| 104 | (n,d) | ( E-thr = 5.301 MeV ) | 3.647 (mb) | 1.424 (μb) | |||
| 107 | (n,a) | ( E-thr = 89.42 keV ) | 10.62 (mb) | 19.26 (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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