20-Ca-42

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 1.920 (b) 2.080 (b) 1.083 2.068 (b) 3.297 (b)
elastic 1.237 (b) 1.396 (b) 1.129 866.1 (mb) 2.932 (b)
inelastic ( E-thr = 1.561 MeV ) 448.1 (mb) 355.3 (mb)
(n,2n) ( E-thr = 11.76 MeV ) 213.2 (mb) 31.93 (μb)
(n,na) ( E-thr = 6.407 MeV ) 209.1 (mb) 111.5 (μb)
(n,np) ( E-thr = 10.52 MeV ) 63.61 (mb) 12.49 (μb)
capture 683.1 (mb) 683.5 (mb) 1.001 377.0 (mb) 360.2 (μb) 3.159 (mb)
(n,p) ( E-thr = 2.809 MeV ) 181.2 (mb) 3.614 (mb)
(n,a) 0.000 (b) 0.000 (b) 43.21 (mb) 86.36 (mb) 2.813 (mb)
MT = 600 ( E-thr = 2.809 MeV ) 324.1 (μb) 525.1 (μb)
MT = 601 ( E-thr = 2.918 MeV ) 331.4 (μb) 399.5 (μb)
MT = 602 ( E-thr = 3.073 MeV ) 391.9 (μb) 231.9 (μb)
MT = 603 ( E-thr = 3.463 MeV ) 312.9 (μb) 181.6 (μb)
MT = 604 ( E-thr = 3.507 MeV ) 280.0 (μb) 169.1 (μb)
MT = 605 ( E-thr = 3.525 MeV ) 329.4 (μb) 73.41 (μb)
MT = 606 ( E-thr = 3.612 MeV ) 296.4 (μb) 151.2 (μb)
MT = 607 ( E-thr = 3.671 MeV ) 357.7 (μb) 135.2 (μb)
MT = 608 ( E-thr = 3.946 MeV ) 365.9 (μb) 78.31 (μb)
MT = 609 ( E-thr = 3.980 MeV ) 316.1 (μb) 63.00 (μb)
MT = 610 ( E-thr = 4.036 MeV ) 352.3 (μb) 65.29 (μb)
MT = 611 ( E-thr = 4.094 MeV ) 340.8 (μb) 74.23 (μb)
MT = 612 ( E-thr = 4.106 MeV ) 279.2 (μb) 71.19 (μb)
MT = 613 ( E-thr = 4.113 MeV ) 278.9 (μb) 70.40 (μb)
MT = 614 ( E-thr = 4.218 MeV ) 219.1 (μb) 9.565 (μb)
MT = 615 ( E-thr = 4.219 MeV ) 187.5 (μb) 50.02 (μb)
MT = 616 ( E-thr = 4.243 MeV ) 353.7 (μb) 50.96 (μb)
MT = 617 ( E-thr = 4.251 MeV ) 353.4 (μb) 50.36 (μb)
MT = 618 ( E-thr = 4.297 MeV ) 272.6 (μb) 53.24 (μb)
MT = 619 ( E-thr = 4.308 MeV ) 299.9 (μb) 49.17 (μb)
MT = 620 ( E-thr = 4.334 MeV ) 255.7 (μb) 47.10 (μb)
MT = 621 ( E-thr = 4.358 MeV ) 184.2 (μb) 40.18 (μb)
MT = 622 ( E-thr = 4.385 MeV ) 347.8 (μb) 41.48 (μb)
MT = 623 ( E-thr = 4.542 MeV ) 191.7 (μb) 26.79 (μb)
MT = 624 ( E-thr = 4.574 MeV ) 224.8 (μb) 34.89 (μb)
MT = 625 ( E-thr = 4.596 MeV ) 339.1 (μb) 30.51 (μb)
MT = 626 ( E-thr = 4.639 MeV ) 341.9 (μb) 26.04 (μb)
MT = 627 ( E-thr = 4.670 MeV ) 336.0 (μb) 27.45 (μb)
MT = 628 ( E-thr = 4.696 MeV ) 176.3 (μb) 23.66 (μb)
MT = 629 ( E-thr = 4.716 MeV ) 258.1 (μb) 28.23 (μb)
MT = 630 ( E-thr = 4.768 MeV ) 313.8 (μb) 28.45 (μb)
MT = 631 ( E-thr = 4.793 MeV ) 267.5 (μb) 27.36 (μb)
MT = 632 ( E-thr = 4.803 MeV ) 115.0 (μb) 1.996 (μb)
MT = 633 ( E-thr = 4.845 MeV ) 172.9 (μb) 18.76 (μb)
MT = 634 ( E-thr = 4.908 MeV ) 326.1 (μb) 19.43 (μb)
MT = 635 ( E-thr = 4.931 MeV ) 250.6 (μb) 20.38 (μb)
MT = 636 ( E-thr = 5.022 MeV ) 321.3 (μb) 16.44 (μb)
MT = 637 ( E-thr = 5.049 MeV ) 320.2 (μb) 15.82 (μb)
MT = 638 ( E-thr = 5.066 MeV ) 319.5 (μb) 15.43 (μb)
MT = 639 ( E-thr = 5.101 MeV ) 244.7 (μb) 15.74 (μb)
MT = 649 ( E-thr = 5.114 MeV ) 169.7 (mb) 554.8 (μb)
MT = 800 0.000 (b) 0.000 (b) 16.01 (mb) 523.6 (μb) 1.722 (mb)
MT = 801 ( E-thr = 948.5 keV ) 295.5 (μb) 260.7 (μb)
MT = 802 ( E-thr = 1.205 MeV ) 303.5 (μb) 161.6 (μb)
MT = 803 ( E-thr = 1.794 MeV ) 386.4 (μb) 76.18 (μb)
MT = 804 ( E-thr = 2.049 MeV ) 382.0 (μb) 52.28 (μb)
MT = 805 ( E-thr = 2.066 MeV ) 163.0 (μb) 28.07 (μb)
MT = 806 ( E-thr = 2.143 MeV ) 303.8 (μb) 42.28 (μb)
MT = 807 ( E-thr = 2.192 MeV ) 476.7 (μb) 46.17 (μb)
MT = 808 ( E-thr = 2.214 MeV ) 410.8 (μb) 44.99 (μb)
MT = 809 ( E-thr = 2.235 MeV ) 378.6 (μb) 39.79 (μb)
MT = 810 ( E-thr = 2.346 MeV ) 302.2 (μb) 31.10 (μb)
MT = 811 ( E-thr = 2.366 MeV ) 302.0 (μb) 30.17 (μb)
MT = 812 ( E-thr = 2.473 MeV ) 391.9 (μb) 28.11 (μb)
MT = 813 ( E-thr = 2.549 MeV ) 161.5 (μb) 13.32 (μb)
MT = 814 ( E-thr = 2.672 MeV ) 387.4 (μb) 20.94 (μb)
MT = 815 ( E-thr = 2.786 MeV ) 384.7 (μb) 17.68 (μb)
MT = 816 ( E-thr = 2.887 MeV ) 382.3 (μb) 15.25 (μb)
MT = 817 ( E-thr = 2.995 MeV ) 295.3 (μb) 11.60 (μb)
MT = 818 ( E-thr = 3.017 MeV ) 159.5 (μb) 6.483 (μb)
MT = 819 ( E-thr = 3.092 MeV ) 282.3 (μb) 9.265 (μb)
MT = 820 ( E-thr = 3.113 MeV ) 269.0 (μb) 8.953 (μb)
MT = 821 ( E-thr = 3.182 MeV ) 429.4 (μb) 9.847 (μb)
MT = 822 ( E-thr = 3.260 MeV ) 158.2 (μb) 4.470 (μb)
MT = 823 ( E-thr = 3.299 MeV ) 290.8 (μb) 7.311 (μb)
MT = 824 ( E-thr = 3.363 MeV ) 352.4 (μb) 7.491 (μb)
MT = 825 ( E-thr = 3.421 MeV ) 288.7 (μb) 6.069 (μb)
MT = 826 ( E-thr = 3.481 MeV ) 287.7 (μb) 5.545 (μb)
MT = 827 ( E-thr = 3.579 MeV ) 362.6 (μb) 5.436 (μb)
MT = 828 ( E-thr = 3.634 MeV ) 376.8 (μb) 5.437 (μb)
MT = 829 ( E-thr = 3.702 MeV ) 148.4 (μb) 2.174 (μb)
MT = 830 ( E-thr = 3.739 MeV ) 368.1 (μb) 2.396 (μb)
MT = 849 ( E-thr = 3.929 MeV ) 76.35 (mb) 90.01 (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)
 .