64-Gd-155

MT Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
1 (n,total) 60.79 (kb) 50.75 (kb) 0.835 5.296 (b) 6.684 (b)
2 (n,elastic) 59.49 (b) 55.43 (b) 0.932 2.840 (b) 3.994 (b)
4 (n,inelastic) ( E-thr = 60.40 keV ) 585.6 (mb) 2.457 (b)
16 (n,2n) ( E-thr = 6.477 MeV ) 1.859 (b) 10.78 (mb)
17 (n,3n) ( E-thr = 15.43 MeV ) 1.534 (μb)
22 (n,na) 0.000 (b) 0.000 (b) 135.8 (nb) 47.82 (μb) 20.44 (nb)
24 (n,2na) ( E-thr = 5.552 MeV ) 90.29 (nb) 208.4e-12 (b)
28 (n,np) ( E-thr = 7.671 MeV ) 57.30 (μb) 31.48 (nb)
32 (n,nd) ( E-thr = 11.92 MeV ) 1.714e-15 (b) 72.22e-12 (b)
41 (n,2np) ( E-thr = 14.16 MeV ) 2.603e-12 (b)
102 (n,γ) 60.74 (kb) 50.69 (kb) 0.835 1.561 (kb) 1.002 (mb) 221.9 (mb)
103 (n,p) 0.000 (b) 0.000 (b) 77.62 (μb) 6.978 (mb) 4.741 (μb)
104 (n,d) ( E-thr = 5.432 MeV ) 610.9 (μb) 125.3 (nb)
105 (n,t) ( E-thr = 5.618 MeV ) 10.94 (μb) 4.309 (nb)
106 (n,He-3) ( E-thr = 6.413 MeV ) 102.2e-15 (b) 85.78e-15 (b)
107 (n,a) 81.54 (μb) 68.12 (μb) 0.835 13.75 (μb) 1.863 (mb) 905.4 (nb)

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).

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)
 .