16-S-32

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 1.514 (b) 1.642 (b) 1.084 1.737 (b) 2.776 (b)
elastic 979.0 (mb) 1.105 (b) 1.129 764.1 (mb) 2.532 (b)
inelastic ( E-thr = 2.300 MeV ) 402.6 (mb) 95.61 (mb)
(n,2n) ( E-thr = 15.56 MeV ) 5.765 (nb)
(n,na) ( E-thr = 7.167 MeV ) 81.47 (mb) 74.70 (μb)
(n,np) ( E-thr = 9.144 MeV ) 76.00 (mb) 40.04 (μb)
capture 528.2 (mb) 528.6 (mb) 1.001 249.5 (mb) 3.236 (μb) 572.1 (μb)
(n,p) ( E-thr = 956.9 keV ) 254.0 (mb) 69.55 (mb)
(n,a) 7.113 (mb) 8.030 (mb) 1.129 425.8 (mb) 159.6 (mb) 79.47 (mb)

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).

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)
 .