MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
---|---|---|---|---|---|---|---|
1 | (n,total) | 22.32 (b) | 24.63 (b) | 1.103 | − | 2.760 (b) | 3.651 (b) |
2 | (n,elastic) | 17.86 (b) | 20.16 (b) | 1.129 | − | 1.335 (b) | 3.185 (b) |
4 | (n,inelastic) | ( E-thr = 68.52 keV ) | 406.8 (mb) | 379.3 (mb) | |||
16 | (n,2n) | ( E-thr = 7.950 MeV ) | 172.1 (mb) | 42.16 (μb) | |||
17 | (n,3n) | ( E-thr = 16.76 MeV ) | − | 625.4e-12 (b) | |||
22 | (n,na) | ( E-thr = 6.397 MeV ) | 5.045 (mb) | 1.440 (μb) | |||
28 | (n,np) | ( E-thr = 8.313 MeV ) | 468.2 (mb) | 143.9 (μb) | |||
32 | (n,nd) | ( E-thr = 15.38 MeV ) | − | 104.6e-15 (b) | |||
102 | (n,γ) | 4.465 (b) | 4.467 (b) | 1.000 | 2.177 (b) | 56.35 (μb) | 7.804 (mb) |
103 | (n,p) | 0.000 (b) | 0.000 (b) | − | 429.6 (mb) | 267.5 (mb) | 73.57 (mb) |
104 | (n,d) | ( E-thr = 6.050 MeV ) | 6.652 (mb) | 3.079 (μb) | |||
105 | (n,t) | ( E-thr = 9.018 MeV ) | 2.516 (μb) | 2.631 (nb) | |||
106 | (n,He-3) | ( E-thr = 6.593 MeV ) | 17.05 (μb) | 3.908 (nb) | |||
107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 46.58 (mb) | 91.16 (mb) | 5.223 (mb) |
111 | (n,2p) | ( E-thr = 6.671 MeV ) | 8.033 (mb) | 1.484 (μb) |
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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