96-Cm-245

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 2.411 (kb) 2.271 (kb) 0.942 5.946 (b) 8.043 (b)
elastic 10.25 (b) 11.45 (b) 1.117 2.827 (b) 4.508 (b)
inelastic ( E-thr = 55.04 keV ) 332.4 (mb) 1.704 (b)
(n,2n) ( E-thr = 5.543 MeV ) 410.3 (mb) 8.059 (mb)
(n,3n) ( E-thr = 12.37 MeV ) 11.50 (mb) 2.483 (μb)
fission 2.054 (kb) 1.935 (kb) 0.942 831.7 (b) 2.360 (b) 1.754 (b)
(n,fission) 2.054 (kb) 1.935 (kb) 0.942 831.3 (b) 1.089 (b) 1.739 (b)
(n,n,fiss) ( E-thr = 2.300 MeV ) 995.2 (mb) 15.51 (mb)
(n,2n,fiss) ( E-thr = 6.500 MeV ) 274.1 (mb) 77.86 (μb)
(n,4n) ( E-thr = 18.09 MeV ) 96.71e-12 (b)
(n,3nfiss) ( E-thr = 15.50 MeV ) 317.1e-12 (b)
capture 347.0 (b) 324.4 (b) 0.935 107.9 (b) 958.1 (μb) 67.87 (mb)
 
νp 3.590 5.241
νd 6.482e-3 5.227e-3

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)
 .


νp, νd : numbers of prompt and delayed neutrons per fission.