14-Si-28

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 2.353 (b) 2.633 (b) 1.119 1.752 (b) 3.241 (b)
2 (n,elastic) 2.177 (b) 2.456 (b) 1.128 757.3 (mb) 3.031 (b)
4 (n,inelastic) ( E-thr = 1.843 MeV ) 436.5 (mb) 200.6 (mb)
16 (n,2n) ( E-thr = 17.80 MeV ) 1.396 (nb)
22 (n,na) ( E-thr = 10.34 MeV ) 13.10 (mb) 2.970 (μb)
28 (n,np) ( E-thr = 12.00 MeV ) 71.27 (mb) 10.51 (μb)
102 (n,γ) 176.9 (mb) 176.9 (mb) 1.000 84.38 (mb) 705.5 (μb) 573.8 (μb)
103 (n,p) ( E-thr = 3.999 MeV ) 251.6 (mb) 6.134 (mb)
107 (n,a) ( E-thr = 2.748 MeV ) 221.5 (mb) 2.611 (mb)
111 (n,2p) ( E-thr = 13.90 MeV ) 0.000 (b) 1.964 (nb)

These cross sections are calculated from JENDL-3.3 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 :
σmacs(T) =
2
 
 
π
EU
 
EL
σ(E,T) ⋅ E ⋅ exp (
E
  
kBT
) dE
 
EU
 
EL
E ⋅ exp (
E
  
kBT
) dE
,
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 :
σri(T) =
EU
 
EL
σ(E,T) ⋅
1
 
E
dE ,
with  EL = 0.5 eV  and  EU = 10 MeV.
U-235 Thermal Fission-Neutron Spectrum Average (Fiss. Spec. Average) :
σfacs(T) =
EU
 
EL
σ(E,T) ⋅
 
4
 
πa3b
⋅ exp (
ab E
     
4 a
) ⋅ sinh
 
bE
dE
 
EU
 
EL
 
4
 
πa3b
⋅ exp (
ab E
     
4 a
) ⋅ sinh
 
bE
dE
,
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 :
g(T) =
σmacs(T)
 
σ(0.0253 eV,T)
 .