MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
---|---|---|---|---|---|---|---|
1 | (n,total) | 11.21 (b) | 12.37 (b) | 1.104 | − | 3.328 (b) | 4.129 (b) |
2 | (n,elastic) | 8.988 (b) | 10.15 (b) | 1.129 | − | 1.779 (b) | 3.065 (b) |
4 | (n,inelastic) | 0.000 (b) | 0.000 (b) | − | 3.684 (b) | 565.5 (mb) | 1.050 (b) |
16 | (n,2n) | ( E-thr = 6.877 MeV ) | 886.1 (mb) | 419.3 (μb) | |||
17 | (n,3n) | ( E-thr = 16.15 MeV ) | − | 26.48 (nb) | |||
22 | (n,na) | ( E-thr = 4.148 MeV ) | 32.42 (mb) | 22.55 (μb) | |||
24 | (n,2na) | ( E-thr = 11.95 MeV ) | 18.03e-15 (b) | 68.01e-12 (b) | |||
28 | (n,np) | ( E-thr = 8.651 MeV ) | 21.70 (mb) | 6.133 (μb) | |||
41 | (n,2np) | ( E-thr = 16.75 MeV ) | − | 1.343e-12 (b) | |||
102 | (n,γ) | 2.217 (b) | 2.218 (b) | 1.000 | 5.997 (b) | 533.3 (μb) | 11.44 (mb) |
103 | (n,p) | ( E-thr = 822.2 keV ) | 31.68 (mb) | 632.3 (μb) | |||
107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 7.358 (mb) | 11.43 (mb) | 773.7 (μb) |
112 | (n,pa) | ( E-thr = 6.034 MeV ) | 216.0 (nb) | 402.5e-12 (b) |
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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