CHARGE - CHANGING CROSS SECTIONS

IN ION - ATOM COLLISIONS

N.V.Novikov, Ya. A. Teplova

Scobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991 Moscow, Russia

nvnovikov65@mail.ru teplova@anna19.sinp.msu.ru
Cross Sections Equilibrium Fractions FBA References Analysis Notation Help CCCS code

THE EMPIRICAL ANALYSIS

σ q,q+1 Emax,L1 σ max,L1 αL1 βL1
σ q,q-1 σ max,c1 αc1

Table 1 Single electron loss cross section: Emax,L1 (q)

σ q,q+1 Z Emax,L1 , MeV/amu
H2 He N2 Ne Ar Kr Xe Recom. data
σ -1,0 1 0.020 0.020 0.020 0.020 0.020 0.020 0.020 0.020
6 0.020 0.020 0.020 0.020 0.020 0.020 0.020
8 0.020 0.020 0.020 0.020 0.020 0.020 0.020
σ 0,1 1 0.070 0.030 0.070 0.070 0.070 0.070 0.070 0.050
2 0.070 0.070 0.070 0.070 0.070 0.070 0.070
6 0.050 0.050 0.050 0.050 0.050 0.050 0.050
7 0.050 0.050 0.050 0.050 0.050 0.050 0.050
8 0.050 0.050 0.050 0.050 0.050 0.050 0.050
σ 1,2 2 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.100
6 0.100 0.100 0.100 0.100 0.100 0.100 0.100
7 0.100 0.100 0.100 0.100 0.100 0.100 0.100
8 0.100 0.100 0.100 0.100 0.100 0.100 0.100
σ 2,3 6 0.200 0.200 0.200 0.200 0.200 0.200 0.200 0.200
7 0.200 0.200 0.200 0.200 0.200 0.200 0.200
8 0.200 0.200 0.200 0.200 0.200 0.200 0.200
σ 3,4 6 0.300 0.300 0.300 0.300 0.300 0.300 0.300 0.300
7 0.300 0.300 0.300 0.300 0.300 0.300 0.300
8 0.300 0.300 0.300 0.300 0.300 0.300 0.300
σ 4,5 6 0.500 0.500 0.500 0.500 0.500 0.500 0.500 0.500
7 0.500 0.500 0.500 0.500 0.500 0.500 0.500
8 0.500 0.500 0.500 0.500 0.500 0.500 0.500
σ 5,6 6 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
7 1.0 1.0 1.0 1.0 1.0 1.0 1.0
8 1.0 1.0 1.0 1.0 1.0 1.0 1.0
σ 6,7 7 1.0 1.0 1.5 1.5 1.5 1.5 1.5 1.3
8 1.0 1.0 1.0 1.5 1.5 1.5 1.5
σ 7,8 8 1.5 1.5 2.0 1.5 1.5 1.5 1.5 1.5

The value Emax,L1 (q) is independent from Z and Zt.

The values distinguished from recomended data are marked by colour

Table 2 Single electron loss cross section: σmax,L1 (Z,Zt,q)

σ q,q+1 Z σ max,L1 , 10 -16 , cm 2 /atom
H2 He N2 Ne Ar Kr Xe
σ -1,0 1 4.60 6.20 11.3 4.90 18.0 24.4 30.0
6 3.80 5.20 9.50 11.3 15.0 20.7 25.4
8 3.40 4.70 8.50 10.0 13.0 17.9 22.0
σ 0,1 1 0.88 1.42 2.45 2.02 4.80 4.55 5.50
2 0.73 1.05 2.40 2.50 3.80 4.80 6.00
6 2.30 3.05 4.70 5.30 6.60 8.40 9.80
7 2.00 2.70 4.70 5.40 6.80 9.30 11.1
8 1.85 2.60 4.70 5.50 7.50 10.2 12.4
σ 1,2 2 0.15 0.24 0.56 0.73 1.16 1.73 2.20
6 0.90 1.24 2.20 2.60 3.48 4.80 5.70
7 0.95 1.38 2.60 3.10 4.10 5.70 7.05
8 1.00 1.50 2.70 3.20 4.40 6.20 7.70
σ 2,3 6 0.27 0.42 0.94 1.19 1.78 2.80 3.60
7 0.40 0.60 1.30 1.60 2.30 3.55 4.45
8 0.50 0.77 1.57 1.90 2.74 4.10 5.30
σ 3,4 6 0.095 0.155 0.38 0.51 0.78 1.26 1.70
7 0.150 0.245 0.67 0.83 1.27 2.20 2.90
8 0.23 0.37 0.92 1.21 1.82 3.00 4.10
σ 4,5 6 0.0090 0.022 0.105 0.160 0.320 0.720 1.100
7 0.025 0.071 0.330 0.400 0.770 1.340 2.300
8 0.042 0.100 0.386 0.570 0.850 2.050 3.200
σ 5,6 6 0.0030 0.0069 0.0320 0.0530 0.105 0.234 0.400
7 0.0084 0.0180 0.0730 0.125 0.200 0.450 0.700
8 0.015 0.031 0.120 0.180 0.340 0.670 1.120
σ 6,7 7 0.0028 0.0063 0.0300 0.0473 0.0995 0.220 0.314
8 0.0035 0.0081 0.0370 0.0620 0.124 0.260 0.340
σ 7,8 8 8.6e-4 0.0020 0.0082 0.0125 0.0247 0.0530 0.0870

The values distinguished from recomended data are marked by colour

Tab.3 Single electron loss cross section: αL1 (E/Emax,L1 )
(where σ q,q+1 ˜ (E/Emax,L1 )** αL1 , E → ∞ )

E/Emax,l1 α l1
6.7 -0.520
10.0 -0.524
20.0 -0.536
33.3 -0.555
50.0 -0.573
100.0 -0.600
200.0 -0.632
500.0 -0.670

The value α L1 is independent from q, Z and Zt.

Tab.4 Single electron loss cross section: βL1
(where σ q,q+1 ˜ E** βL1 , E → 0 )

σ q,q+1 Z βL1
H2 He N2 Ne Ar Kr Xe
σ -1,0 1 0.07 0.135 0.255 0.285 0.340 0.404 0.444
6 0.20 0.255 0.349 0.377 0.425 0.477 0.511
8 0.20 0.255 0.349 0.377 0.425 0.477 0.514
Recom. 0.20 0.255 0.349 0.377 0.425 0.477 0.514
σ 0,1 1 0.42 0.55 0.80 0.87 1.00 1.15 1.25
2 0.78 1.06 1.56 1.47 1.94 2.22 2.38
6 0.42 0.55 0.80 0.87 1.00 1.15 1.25
7 0.42 0.54 0.80 0.87 1.00 1.15 1.25
8 0.42 0.55 0.80 0.87 1.00 1.15 1.25
Recom. 0.42 0.55 0.80 0.87 1.00 1.15 1.25
σ 1,2 2 1.30 1.54 2.00 2.14 2.35 2.64 2.77
6 0.90 1.06 1.38 1.47 1.61 1.80 1.90
7 0.90 0.75 1.38 1.51 1.60 1.80 1.90
8 0.90 1.06 1.38 1.48 1.61 1.80 1.90
Recom. 0.90 1.03 1.38 1.47 1.61 1.80 1.90
σ 2,3 6 1.00 1.20 1.58 1.70 1.86 2.08 2.20
7 1.00 1.20 1.58 1.70 1.86 2.08 2.20
8 1.00 1.20 1.58 1.70 1.86 2.08 2.20
Recom. 1.00 1.20 1.58 1.70 1.86 2.07 2.20
σ 3,4 6 1.20 1.42 1.83 1.95 2.14 2.35 2.50
7 1.20 1.42 1.83 1.95 2.13 2.35 2.50
8 1.20 1.42 1.83 1.95 2.13 2.36 2.50
Recom. 1.20 1.42 1.83 1.95 2.13 2.35 2.50
σ 4,5 6 1.30 1.60 2.13 2.28 2.53 2.83 3.01
7 1.30 1.60 2.13 2.28 2.53 2.83 3.00
8 1.30 1.60 2.13 2.28 2.53 2.83 3.00
Recom. 1.30 1.60 2.13 2.28 2.53 2.83 3.00
σ 5,6 6 1.40 1.80 2.51 2.75 3.06 3.46 3.70
7 1.40 1.80 2.51 2.74 3.05 3.46 3.71
8 1.40 1.80 2.51 2.74 3.06 3.46 3.70
Recom. 1.40 1.80 2.51 2.74 3.06 3.46 3.70
σ 6,7 7 1.45 1.90 2.75 2.96 3.35 3.83 4.11
8 1.45 1.90 2.75 2.97 3.35 3.82 4.11
Recom. 1.45 1.90 2.75 2.97 3.35 3.83 4.10
σ 7,8 8 1.50 2.00 2.95 3.25 3.65 4.20 4.50
Recom. 1.50 2.00 2.95 3.25 3.65 4.20 4.50

The value βL1 (Zt,q) is independent from Z.

The values distinguished from recomended data are marked by colour

Table 5 Single electron capture cross section: σmax,c1 (Z,Zt,q)

σ q,q-1 Z σ max,c1 , 10 -16 , cm 2 /atom
H2 He N2 Ne Ar Kr Xe
σ 0,-1 1 0.116 0.065 0.156 0.129 0.341 0.460 0.728
6 0.335 0.235 0.327 0.447 0.920 1.50 2.11
8 0.500 0.257 0.450 0.800 1.76 3.39 5.39
σ 1,0 1 4.84 1.75 5.80 2.94 14.5 26.0 34.3
2 1.34 7.11 3.60 6.60 7.59 10.2 13.5
6 4.29 1.47 4.54 5.29 9.99 21.7 48.5
7 4.99 3.28 5.80 4.85 17.9 23.6 33.1
8 6.20 1.81 6.50 4.39 14.9 10.9 20.7
σ 2,1 2 5.99 2.60 6.28 5.34 12.1 20.9 28.0
6 5.44 5.83 6.86 10.4 13.4 27.6 77.8
7 4.00 5.76 9.00 18.8 10.1 21.7 41.2
8 2.76 6.92 3.49 5.30 6.33 15.6 24.8
σ 3,2 6 7.38 16.9 9.49 13.7 16.2 35.7 78.1
7 7.83 6.86 8.15 10.3 20.7 32.8 55.5
8 7.29 4.54 9.33 11.5 16.5 28.6 35.0
σ 4,3 6 13.9 5.15 12.5 17.8 38.0 44.9 86.8
7 16.5 8.07 14.0 18.0 32.0 42.7 64.7
8 15.4 8.99 12.8 16.5 28.0 34.5 48.5
σ 5,4 6 14.4 16.7 20.2 29.8 48.8 60.0 97.2
7 13.7 15.5 18.8 25.8 38.0 48.6 80.8
8 16.4 21.2 16.5 18.2 34.1 43.8 59.1
σ 6,5 6 22.3 14.8 41.0 52.0 77.2 89.8 111.1
7 22.0 15.1 30.7 37.1 62.8 76.4 103.2
8 21.4 14.0 19.5 25.0 55.3 66.0 95.0
σ 7,6 7 24.5 28.0 45.2 69.3 83.1 124.3 148.7
8 22.9 18.1 24.8 33.0 73.7 95.0 124.0
σ 8,7 8 26.3 30.8 45.2 62.2 87.9 114.0 147.7

The values distinguished from recomended data are marked by colour

Tab.6 Single electron capture cross section: αc1 (Zt)
(where σ q,q-1 ˜ E** αc1 , E → ∞ )

σ q,q-1 Z αc1
H2 He N2 Ne Ar Kr Xe
σ 0,-1 1 5.35 5.35 4.19 3.89 3.63 3.45 3.45
6 4.50 4.50 3.50 3.25 3.00 2.84 2.85
8 4.50 4.50 3.50 3.25 3.00 2.85 2.85
σ 1,0 1 5.35 5.35 4.19 3.90 3.62 3.45 3.45
2 5.35 5.35 3.50 3.25 3.00 2.84 2.85
6 4.50 4.50 3.50 3.25 3.00 2.85 2.85
7 4.50 4.50 3.50 3.25 3.00 2.85 2.85
8 4.50 4.50 3.50 3.25 3.00 2.85 2.85
σ 2,1 2 4.50 4.50 3.50 3.25 3.00 2.86 2.85
6 4.50 4.50 3.50 3.25 3.00 2.85 2.85
7 4.50 4.50 3.50 3.25 3.00 2.85 2.85
8 4.50 4.50 3.50 3.25 3.00 2.85 2.85
σ 3,2 6 4.56 4.50 3.50 3.25 3.00 2.85 2.85
7 4.50 4.51 3.50 3.25 3.00 2.86 2.85
8 4.50 4.50 3.50 3.23 2.98 2.85 2.85
σ 4,3 6 4.50 4.50 3.50 3.25 3.00 2.85 2.85
7 4.51 4.50 3.50 3.25 3.00 2.85 2.85
8 4.50 4.50 3.49 3.25 2.99 2.85 2.82
σ 5,4 6 4.50 4.50 3.50 3.25 3.00 2.85 2.85
7 4.50 4.50 3.50 3.25 3.00 2.85 2.85
8 4.53 4.51 3.50 3.26 3.00 2.85 2.84
σ 6,5 6 4.50 4.50 3.50 3.25 3.00 2.85 2.85
7 4.50 4.51 3.51 3.25 3.00 2.85 2.85
8 4.50 4.51 3.52 3.25 2.99 2.84 2.85
σ 7,6 7 4.50 4.50 3.50 3.25 3.00 2.85 2.85
8 4.51 4.50 3.50 3.25 3.00 2.85 2.85
σ 8,7 8 4.51 4.47 3.51 3.25 3.01 2.86 2.87
σ q,q-1 Recom. 4.51 4.47 3.51 3.25 3.01 2.86 2.87

The value αc1 (Zt) is independent from Z and q.

The values distinguished from recomended data are marked by colour