MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
---|---|---|---|---|---|---|---|
1 | (n,total) | 3.934 (b) | 4.332 (b) | 1.101 | − | 2.481 (b) | 3.239 (b) |
2 | (n,elastic) | 3.078 (b) | 3.475 (b) | 1.129 | − | 1.105 (b) | 2.752 (b) |
4 | (n,inelastic) | ( E-thr = 105.0 keV ) | 910.8 (mb) | 484.5 (mb) | |||
16 | (n,2n) | ( E-thr = 12.27 MeV ) | 278.9 (mb) | 36.33 (μb) | |||
22 | (n,na) | ( E-thr = 9.536 MeV ) | 25.59 (μb) | 197.5 (nb) | |||
28 | (n,np) | ( E-thr = 10.71 MeV ) | 44.99 (mb) | 7.622 (μb) | |||
102 | (n,γ) | 856.1 (mb) | 857.4 (mb) | 1.002 | 494.0 (mb) | 1.157 (mb) | 1.863 (mb) |
103 | (n,p) | ( E-thr = 3.255 MeV ) | 89.47 (mb) | 634.3 (μb) | |||
104 | (n,d) | ( E-thr = 8.441 MeV ) | 5.569 (mb) | 1.306 (μb) | |||
105 | (n,t) | ( E-thr = 13.33 MeV ) | 5.739 (nb) | 1.256 (nb) | |||
106 | (n,He-3) | ( E-thr = 11.06 MeV ) | 2.741 (nb) | 32.39e-12 (b) | |||
107 | (n,a) | ( E-thr = 1.235 MeV ) | 43.49 (mb) | 91.56 (μb) | |||
111 | (n,2p) | ( E-thr = 12.43 MeV ) | 242.2e-15 (b) | 45.39e-12 (b) | |||
112 | (n,pa) | ( E-thr = 12.81 MeV ) | 113.8e-18 (b) | 582.5e-15 (b) | |||
115 | (n,pd) | ( E-thr = 16.66 MeV ) | − | 110.1e-15 (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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