35-Br-79

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
(n,total) 14.29 (b) 14.72 (b) 1.030 3.507 (b) 4.540 (b)
(n,elastic) 3.290 (b) 3.714 (b) 1.129 1.819 (b) 2.805 (b)
(n,inelastic) ( E-thr = 210.2 keV ) 683.6 (mb) 1.683 (b)
(n,2n) ( E-thr = 10.82 MeV ) 854.0 (mb) 198.8 (μb)
(n,3n) ( E-thr = 19.22 MeV ) 245.0e-12 (b)
(n,na) ( E-thr = 5.531 MeV ) 530.4 (μb) 169.2 (nb)
(n,np) ( E-thr = 6.412 MeV ) 88.12 (mb) 118.1 (μb)
(n,nd) ( E-thr = 14.79 MeV ) 151.5e-12 (b)
(n,γ) 11.00 (b) 11.01 (b) 1.000 129.1 (b) 909.6 (μb) 48.38 (mb)
(n,p) 0.000 (b) 0.000 (b) 20.59 (mb) 38.31 (mb) 3.182 (mb)
(n,d) ( E-thr = 4.159 MeV ) 10.58 (mb) 3.685 (μb)
(n,t) ( E-thr = 8.454 MeV ) 49.82 (μb) 12.37 (nb)
(n,He-3) ( E-thr = 9.127 MeV ) 0.000 (b) 13.13e-12 (b)
(n,a) 0.000 (b) 0.000 (b) 1.107 (mb) 11.85 (mb) 49.18 (μb)
MT = 203 0.000 (b) 0.000 (b) 21.83 (mb) 126.4 (mb) 3.300 (mb)
MT = 204 ( E-thr = 4.159 MeV ) 10.58 (mb) 3.685 (μb)
MT = 205 ( E-thr = 8.454 MeV ) 49.82 (μb) 12.37 (nb)
MT = 206 ( E-thr = 9.127 MeV ) 0.000 (b) 13.13e-12 (b)
MT = 207 0.000 (b) 0.000 (b) 1.107 (mb) 12.38 (mb) 49.35 (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)
 .