| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.639 (b) | 7.467 (b) | 1.125 | − | 3.846 (b) | 5.698 (b) |
| 2 | (n,elastic) | 6.445 (b) | 7.272 (b) | 1.128 | − | 2.153 (b) | 5.001 (b) |
| 4 | (n,inelastic) | ( E-thr = 928.6 keV ) | 640.0 (mb) | 687.5 (mb) | |||
| 16 | (n,2n) | ( E-thr = 7.283 MeV ) | 972.3 (mb) | 1.150 (mb) | |||
| 17 | (n,3n) | ( E-thr = 14.46 MeV ) | − | 323.4 (nb) | |||
| 22 | (n,na) | ( E-thr = 3.000 MeV ) | 322.8 (μb) | 90.04 (nb) | |||
| 28 | (n,np) | ( E-thr = 8.457 MeV ) | 38.74 (mb) | 8.827 (μb) | |||
| 32 | (n,nd) | ( E-thr = 13.49 MeV ) | 0.000 (b) | 334.8e-12 (b) | |||
| 102 | (n,γ) | 194.3 (mb) | 194.3 (mb) | 1.000 | 1.202 (b) | 994.1 (μb) | 8.571 (mb) |
| 103 | (n,p) | ( E-thr = 769.0 keV ) | 29.03 (mb) | 105.2 (μb) | |||
| 104 | (n,d) | ( E-thr = 6.121 MeV ) | 964.5 (μb) | 231.8 (nb) | |||
| 105 | (n,t) | ( E-thr = 7.165 MeV ) | 15.56 (μb) | 7.465 (nb) | |||
| 106 | (n,He-3) | ( E-thr = 7.796 MeV ) | 264.4e-12 (b) | 15.32e-12 (b) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 619.4 (μb) | 10.41 (mb) | 54.66 (μb) |
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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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