| MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
|---|---|---|---|---|---|---|---|
| 1 | (n,total) | 6.267 (b) | 7.028 (b) | 1.121 | − | 4.480 (b) | 5.574 (b) |
| 2 | (n,elastic) | 5.927 (b) | 6.688 (b) | 1.128 | − | 2.506 (b) | 4.365 (b) |
| 4 | (n,inelastic) | ( E-thr = 563.2 keV ) | 346.9 (mb) | 1.166 (b) | |||
| 16 | (n,2n) | ( E-thr = 9.126 MeV ) | 1.618 (b) | 1.540 (mb) | |||
| 17 | (n,3n) | ( E-thr = 15.73 MeV ) | − | 2.293 (μb) | |||
| 22 | (n,na) | ( E-thr = 4.143 MeV ) | 12.77 (μb) | 6.496 (nb) | |||
| 28 | (n,np) | ( E-thr = 10.36 MeV ) | 2.764 (μb) | 7.398 (nb) | |||
| 102 | (n,γ) | 340.5 (mb) | 340.6 (mb) | 1.000 | 16.95 (b) | 1.020 (mb) | 39.19 (mb) |
| 103 | (n,p) | ( E-thr = 4.113 MeV ) | 7.816 (mb) | 2.512 (μb) | |||
| 104 | (n,d) | ( E-thr = 8.034 MeV ) | 3.255 (μb) | 9.028 (nb) | |||
| 105 | (n,t) | ( E-thr = 10.36 MeV ) | 13.79 (nb) | 1.255 (nb) | |||
| 107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 1.556 (μb) | 495.6 (μb) | 162.7 (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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