34-Se-82

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 5.076 (b) 5.722 (b) 1.127 3.841 (b) 4.946 (b)
2 (n,elastic) 5.031 (b) 5.678 (b) 1.128 2.625 (b) 4.076 (b)
4 (n,inelastic) ( E-thr = 662.9 keV ) 134.4 (mb) 857.4 (mb)
16 (n,2n) ( E-thr = 9.385 MeV ) 1.079 (b) 885.4 (μb)
17 (n,3n) ( E-thr = 16.17 MeV ) 775.3 (nb)
22 (n,na) ( E-thr = 8.349 MeV ) 128.1 (nb) 1.793 (nb)
28 (n,np) ( E-thr = 12.39 MeV ) 5.754 (nb) 4.600 (nb)
102 (n,γ) 44.21 (mb) 44.21 (mb) 1.000 798.1 (mb) 1.006 (mb) 10.45 (mb)
103 (n,p) ( E-thr = 6.695 MeV ) 1.711 (mb) 411.5 (nb)
104 (n,d) ( E-thr = 10.05 MeV ) 269.6 (nb) 4.249 (nb)
105 (n,t) ( E-thr = 12.55 MeV ) 40.35e-15 (b) 514.2e-12 (b)
107 (n,a) ( E-thr = 2.391 MeV ) 169.3 (μb) 49.39 (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)
 .