MT | Reaction | 0.0253-eV | Maxwellian Average |
g-factor | Resonance Integral |
14-MeV | Fiss. Spec. Average |
---|---|---|---|---|---|---|---|
1 | (n,total) | 11.31 (b) | 12.45 (b) | 1.101 | − | 2.760 (b) | 3.817 (b) |
2 | (n,elastic) | 8.804 (b) | 9.941 (b) | 1.129 | − | 1.277 (b) | 2.598 (b) |
4 | (n,inelastic) | ( E-thr = 68.52 keV ) | 426.7 (mb) | 1.205 (b) | |||
16 | (n,2n) | ( E-thr = 7.950 MeV ) | 929.3 (mb) | 1.081 (mb) | |||
17 | (n,3n) | ( E-thr = 19.53 MeV ) | − | 14.69e-12 (b) | |||
22 | (n,na) | ( E-thr = 6.572 MeV ) | 3.548 (mb) | 783.1 (nb) | |||
28 | (n,np) | ( E-thr = 10.02 MeV ) | 15.11 (mb) | 2.790 (μb) | |||
32 | (n,nd) | ( E-thr = 15.38 MeV ) | − | 9.177e-12 (b) | |||
102 | (n,γ) | 2.509 (b) | 2.511 (b) | 1.000 | 2.435 (b) | 18.35 (μb) | 5.459 (mb) |
103 | (n,p) | ( E-thr = 548.6 keV ) | 61.35 (mb) | 1.551 (mb) | |||
104 | (n,d) | ( E-thr = 7.763 MeV ) | 2.937 (mb) | 611.6 (nb) | |||
105 | (n,t) | ( E-thr = 9.018 MeV ) | 108.1 (μb) | 22.09 (nb) | |||
106 | (n,He-3) | ( E-thr = 10.59 MeV ) | 1.152 (nb) | 32.83e-12 (b) | |||
107 | (n,a) | 0.000 (b) | 0.000 (b) | − | 30.00 (mb) | 45.88 (mb) | 4.045 (mb) |
111 | (n,2p) | ( E-thr = 9.447 MeV ) | 207.3 (nb) | 876.7e-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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