7-N-15

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 4.748 (b) 5.358 (b) 1.128 1.643 (b) 2.684 (b)
elastic 4.748 (b) 5.357 (b) 1.128 1.080 (b) 2.678 (b)
inelastic ( E-thr = 5.625 MeV ) 329.3 (mb) 5.895 (mb)
(n,2n) ( E-thr = 11.56 MeV ) 62.72 (mb) 9.942 (μb)
(n,na) ( E-thr = 11.73 MeV ) 7.976 (mb) 1.804 (μb)
(n,np) ( E-thr = 10.89 MeV ) 37.00 (mb) 8.488 (μb)
(n,nd) ( E-thr = 17.25 MeV ) 3.194 (nb)
(n,nt) ( E-thr = 15.85 MeV ) 20.82 (nb)
capture 24.26 (μb) 24.29 (μb) 1.001 95.66 (μb) 14.83 (μb) 15.86 (μb)
(n,p) ( E-thr = 9.594 MeV ) 25.87 (mb) 14.34 (μb)
(n,d) ( E-thr = 8.520 MeV ) 15.14 (mb) 37.19 (μb)
(n,t) ( E-thr = 10.57 MeV ) 25.53 (mb) 6.715 (μb)
(n,a) ( E-thr = 8.134 MeV ) 60.09 (mb) 49.78 (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).

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)
 .