20-Ca-0

Reaction 0.0253-eV Maxwellian
Average
g-factor Resonance
Integral
14-MeV Fiss. Spec.
Average
total 3.488 (b) 3.883 (b) 1.113 2.152 (b) 2.891 (b)
elastic 3.059 (b) 3.454 (b) 1.129 990.5 (mb) 2.704 (b)
inelastic ( E-thr = 381.6 keV ) 252.7 (mb) 48.87 (mb)
(n,2n) ( E-thr = 8.119 MeV ) 14.82 (mb) 3.524 (μb)
(n,3n) ( E-thr = 17.58 MeV ) 24.63e-12 (b)
(n,na) ( E-thr = 6.407 MeV ) 44.07 (mb) 8.421 (μb)
(n,np) ( E-thr = 8.538 MeV ) 470.1 (mb) 207.0 (μb)
capture 428.5 (mb) 428.8 (mb) 1.001 224.3 (mb) 500.1 (μb) 1.394 (mb)
(n,p) ( E-thr = 542.4 keV ) 231.2 (mb) 95.63 (mb)
(n,a) 0.000 (b) 0.000 (b) 249.3 (mb) 146.8 (mb) 40.34 (mb)
MT = 600 ( E-thr = 542.4 keV ) 864.9 (μb) 21.30 (mb)
MT = 601 ( E-thr = 572.9 keV ) 822.1 (μb) 35.96 (mb)
MT = 602 ( E-thr = 1.363 MeV ) 349.6 (μb) 13.49 (mb)
MT = 603 ( E-thr = 1.456 MeV ) 400.2 (μb) 2.648 (mb)
MT = 604 ( E-thr = 2.195 MeV ) 84.49 (μb) 940.8 (μb)
MT = 605 ( E-thr = 2.294 MeV ) 604.4 (μb) 1.662 (mb)
MT = 606 ( E-thr = 2.604 MeV ) 306.5 (μb) 1.713 (mb)
MT = 607 ( E-thr = 2.644 MeV ) 377.0 (μb) 1.592 (mb)
MT = 608 ( E-thr = 2.699 MeV ) 372.8 (μb) 1.284 (mb)
MT = 609 ( E-thr = 2.860 MeV ) 384.7 (μb) 888.0 (μb)
MT = 610 ( E-thr = 2.890 MeV ) 381.0 (μb) 739.2 (μb)
MT = 611 ( E-thr = 2.891 MeV ) 669.0 (μb) 1.133 (mb)
MT = 612 ( E-thr = 3.000 MeV ) 691.8 (μb) 755.3 (μb)
MT = 613 ( E-thr = 3.023 MeV ) 293.6 (μb) 920.4 (μb)
MT = 614 ( E-thr = 3.149 MeV ) 154.5 (μb) 32.85 (μb)
MT = 615 ( E-thr = 3.183 MeV ) 311.2 (μb) 581.6 (μb)
MT = 616 ( E-thr = 3.235 MeV ) 121.0 (μb) 195.9 (μb)
MT = 617 ( E-thr = 3.328 MeV ) 199.8 (μb) 346.1 (μb)
MT = 618 ( E-thr = 3.359 MeV ) 636.4 (μb) 561.0 (μb)
MT = 619 ( E-thr = 3.369 MeV ) 305.5 (μb) 428.6 (μb)
MT = 620 ( E-thr = 3.399 MeV ) 659.6 (μb) 379.8 (μb)
MT = 621 ( E-thr = 3.400 MeV ) 662.6 (μb) 437.4 (μb)
MT = 622 ( E-thr = 3.421 MeV ) 509.7 (μb) 483.1 (μb)
MT = 623 ( E-thr = 3.494 MeV ) 433.3 (μb) 48.96 (μb)
MT = 624 ( E-thr = 3.568 MeV ) 500.2 (μb) 381.3 (μb)
MT = 625 ( E-thr = 3.604 MeV ) 645.3 (μb) 275.3 (μb)
MT = 626 ( E-thr = 3.647 MeV ) 496.3 (μb) 335.4 (μb)
MT = 627 ( E-thr = 3.721 MeV ) 578.5 (μb) 118.9 (μb)
MT = 628 ( E-thr = 3.731 MeV ) 532.2 (μb) 237.4 (μb)
MT = 629 ( E-thr = 3.750 MeV ) 489.6 (μb) 284.2 (μb)
MT = 630 ( E-thr = 3.768 MeV ) 343.5 (μb) 170.8 (μb)
MT = 631 ( E-thr = 3.776 MeV ) 488.1 (μb) 272.5 (μb)
MT = 632 ( E-thr = 3.853 MeV ) 482.5 (μb) 240.7 (μb)
MT = 633 ( E-thr = 3.918 MeV ) 520.4 (μb) 174.8 (μb)
MT = 634 ( E-thr = 3.995 MeV ) 475.4 (μb) 191.6 (μb)
MT = 635 ( E-thr = 4.022 MeV ) 473.2 (μb) 183.7 (μb)
MT = 636 ( E-thr = 4.043 MeV ) 513.7 (μb) 142.8 (μb)
MT = 637 ( E-thr = 4.068 MeV ) 316.8 (μb) 132.8 (μb)
MT = 638 ( E-thr = 4.077 MeV ) 610.5 (μb) 131.5 (μb)
MT = 639 ( E-thr = 4.117 MeV ) 467.6 (μb) 157.9 (μb)
MT = 649 ( E-thr = 4.189 MeV ) 212.7 (mb) 3.669 (mb)
MT = 800 0.000 (b) 0.000 (b) 128.3 (mb) 422.8 (μb) 31.75 (mb)
MT = 801 0.000 (b) 0.000 (b) 17.52 (mb) 225.4 (μb) 2.224 (mb)
MT = 802 0.000 (b) 0.000 (b) 26.35 (mb) 587.4 (μb) 2.673 (mb)
MT = 803 ( E-thr = 252.9 keV ) 559.0 (μb) 887.1 (μb)
MT = 804 ( E-thr = 630.1 keV ) 350.3 (μb) 629.5 (μb)
MT = 805 ( E-thr = 952.9 keV ) 565.9 (μb) 436.0 (μb)
MT = 806 ( E-thr = 1.215 MeV ) 470.7 (μb) 239.1 (μb)
MT = 807 ( E-thr = 1.263 MeV ) 557.9 (μb) 174.6 (μb)
MT = 808 ( E-thr = 1.267 MeV ) 538.5 (μb) 189.9 (μb)
MT = 809 ( E-thr = 1.437 MeV ) 342.0 (μb) 116.7 (μb)
MT = 810 ( E-thr = 1.680 MeV ) 641.5 (μb) 145.9 (μb)
MT = 811 ( E-thr = 1.805 MeV ) 393.9 (μb) 90.63 (μb)
MT = 812 ( E-thr = 1.848 MeV ) 617.6 (μb) 61.94 (μb)
MT = 813 ( E-thr = 1.995 MeV ) 325.0 (μb) 52.52 (μb)
MT = 814 ( E-thr = 1.998 MeV ) 457.1 (μb) 66.14 (μb)
MT = 815 ( E-thr = 2.071 MeV ) 524.7 (μb) 50.88 (μb)
MT = 816 ( E-thr = 2.096 MeV ) 397.1 (μb) 39.44 (μb)
MT = 817 ( E-thr = 2.193 MeV ) 514.1 (μb) 45.35 (μb)
MT = 818 ( E-thr = 2.200 MeV ) 608.0 (μb) 43.36 (μb)
MT = 819 ( E-thr = 2.248 MeV ) 427.3 (μb) 32.03 (μb)
MT = 820 ( E-thr = 2.269 MeV ) 206.0 (μb) 14.25 (μb)
MT = 821 ( E-thr = 2.339 MeV ) 374.0 (μb) 19.02 (μb)
MT = 822 ( E-thr = 2.355 MeV ) 573.4 (μb) 22.35 (μb)
MT = 823 ( E-thr = 2.380 MeV ) 389.5 (μb) 19.27 (μb)
MT = 824 ( E-thr = 2.453 MeV ) 569.3 (μb) 18.59 (μb)
MT = 825 ( E-thr = 2.551 MeV ) 490.4 (μb) 17.10 (μb)
MT = 826 ( E-thr = 2.576 MeV ) 581.5 (μb) 17.90 (μb)
MT = 827 ( E-thr = 2.642 MeV ) 576.7 (μb) 15.44 (μb)
MT = 828 ( E-thr = 2.714 MeV ) 363.3 (μb) 9.683 (μb)
MT = 829 ( E-thr = 2.745 MeV ) 479.6 (μb) 11.47 (μb)
MT = 830 ( E-thr = 2.758 MeV ) 196.4 (μb) 4.983 (μb)
MT = 831 ( E-thr = 2.778 MeV ) 496.7 (μb) 11.12 (μb)
MT = 832 ( E-thr = 2.905 MeV ) 354.3 (μb) 7.724 (μb)
MT = 833 ( E-thr = 2.933 MeV ) 156.2 (nb) 5.191 (nb)
MT = 834 ( E-thr = 2.957 MeV ) 88.47 (nb) 2.339 (nb)
MT = 835 ( E-thr = 3.038 MeV ) 87.47 (nb) 2.063 (nb)
MT = 836 ( E-thr = 3.063 MeV ) 88.03 (nb) 1.989 (nb)
MT = 837 ( E-thr = 3.087 MeV ) 87.72 (nb) 1.918 (nb)
MT = 838 ( E-thr = 3.104 MeV ) 116.6 (nb) 2.677 (nb)
MT = 839 ( E-thr = 3.145 MeV ) 138.1 (nb) 3.237 (nb)
MT = 849 ( E-thr = 3.174 MeV ) 131.7 (mb) 201.4 (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)
 .