34-Se-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 20.33 (b) 21.41 (b) 1.053 3.472 (b) 4.880 (b)
elastic 8.366 (b) 9.445 (b) 1.129 1.714 (b) 3.659 (b)
inelastic ( E-thr = 164.0 keV ) 632.4 (mb) 1.208 (b)
(n,2n) ( E-thr = 7.516 MeV ) 1.096 (b) 667.3 (μb)
(n,3n) ( E-thr = 16.17 MeV ) 49.14 (nb)
(n,na) ( E-thr = 4.130 MeV ) 265.5 (μb) 98.40 (nb)
(n,np) ( E-thr = 8.662 MeV ) 3.091 (mb) 749.0 (nb)
(n,nd) ( E-thr = 14.90 MeV ) 9.252e-12 (b)
capture 11.97 (b) 11.97 (b) 1.000 13.08 (b) 930.7 (μb) 11.80 (mb)
(n,p) 0.000 (b) 0.000 (b) 2.873 (mb) 19.98 (mb) 257.5 (μb)
(n,d) ( E-thr = 6.407 MeV ) 1.150 (mb) 267.3 (nb)
(n,t) ( E-thr = 8.556 MeV ) 136.1 (nb) 1.165 (nb)
(n,He-3) ( E-thr = 6.575 MeV ) 1.810 (nb) 1.240e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 423.4 (μb) 3.007 (mb) 33.22 (μb)
MT = 203 0.000 (b) 0.000 (b) 2.873 (mb) 23.07 (mb) 258.3 (μb)
MT = 204 ( E-thr = 6.407 MeV ) 1.150 (mb) 267.3 (nb)
MT = 205 ( E-thr = 8.556 MeV ) 136.1 (nb) 1.165 (nb)
MT = 206 ( E-thr = 6.575 MeV ) 1.810 (nb) 1.240e-12 (b)
MT = 207 0.000 (b) 0.000 (b) 423.4 (μb) 3.273 (mb) 33.32 (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)
 .