ABSTRACT
Total cross section 50-2000 Joshipura et al (2002)
Total cross section 350-5000 de Pablos et al (2002)
Attachment cross sections
0-10 Rangwala et al. (1999)
Attachment cross sections
0-10 Senn et al. (1999)
Total cross section 0009-10 Gulley et al. (1998) Excitation cross section 0-12 Allan et al. (1996) Excitation cross section 30-110 Mason et al. (1996) Attachment cross section 0-9 Skalny et al. (1996) Excitation cross section 7, 10, 15, 20 Sweeny and Shyn (1996) Attachment cross sections
0-10 Walker et al. (1996)
Ionization cross section 40-500 Newson et al. (1995) Vibrational excitation cross sections
3-7 Davies et al. (1993)
TABLE 35.1 (continued) Selected References Data on O3 Quantity Range: eV, (Td) Reference
Elastic scattering cross sections
30-200 Shyn and Sweeny (1993)
Excitation cross sections 375-125 Johnstone et al. (1992) Ionization cross sections 125-100 Siegel (1982) Attachment cross section 0-1 Stelman et al. (1972) Attachment processes 0-3 Curran (1961)
Note: Bold font indicates experimental study
gases
4 A monotonic decrease of QT is a common feature to most gases
Figure 352 shows experimental differential cross sections in the low-energy range, from 3 to 20 eV (Shyn and Sweeny, 1993)Figure 353 shows the theoretical differential cross sections in the intermediate and high-energy range, from 30 to 10,000 eV (de Pablos et al, 2002)
A single study is available for the low-energy range as shown in Table 354 (Shyn and Sweeny, 1993)
See Table 355 The excitation cross sections for the Hartley band lying
between 4-6 eV (240-749 nm more specifically) are shown in Table 356 and Figure 354 (Sweeny and Shyn, 1996)
TABLE 35.2 Total Scattering Cross Sections in the Low-Energy Range
Energy (eV)
QT (10−20 m2) Energy (eV)
QT (10−20 m2)
O3 ClO2 O3 ClO2
0010 117 040 178 8873 0012 108 045 167 7737 0015 99 05 158 7659 0017 939 06 148 6450 0020 876 07 137 5575 0022 840 114610 08 131 5025 0025 794 91887 09 128 4625 0030 731 6281 10 126 4375 0035 681 35352 12 122 4000 0040 639 15 120 3700 0045 603 22650 17 121 3550 0050 573 3925 20 123 340 006 523 49565 22 126 3350 007 482 46380 25 130 3225 008 450 44250 30 138 3000 009 422 41595 35 148 2750 010 398 4000 40 154 2485 012 359 3150 45 146 2245 015 316 2512 5 141 2030 017 294 2245 6 142 1875 020 267 1923 7 147 1965 022 252 1761 8 153 201 025 234 1492 9 159 205 030 210 1221 10 165 208 035 192 1054
Source:Adapted from Gulley, RJet al, J. Phys. B: At. Mol. Opt. Phys, 31, 5197, 1998
Note: Data for ClO2 are given for comparison Also see Karwasz et al (2003)
Total cross section ozone (O3)
Q T (1
m 2 )
0 0.01 0.1 1 10
Energy (eV) 100 1000 10,000
(1 0-
2 )
1 0 40 80
Angle (°) 120 160
Energy
Differential scattering
Ozone (O3)3 eV5 10 20
TABLE 35.3 Total Scattering Cross Sections for O3 Energy (eV) QT (10−20 m2) Energy (eV) QT (10−20 m2)
350 277 1500 891
400 246 1750 790 450 225 2000 712 500 207 2500 600 600 181 3000 518 700 159 3500 461 800 143 4000 415 900 132 4500 375 1000 121 5000 346
1250 103
Source:Adapted from de Pablos, JLet al, J. Phys. B: At. Mol. Opt. Phys., 35, 865, 2002
See Table 357
Table 358 and Figure 355 show the total ionization cross sectionFigure 356 shows the partial ionization cross sections
Attachment occurs according to the following reactions (Walker et al, 1996):
O e [O
O O (35.1a)
O O
+
+
+ → →
] (35.1b)
O 2O (35.1c− + )
O e (35.1d)3 * +
TABLE 35.4 Elastic and Momentum Transfer Cross Sections for O3 Energy (eV) Qel (10−20 m2) QM(10−20 m2)
30 148 134
50 149 118
70 141 102
10 144 107
15 141 106
20 130 116
Source:Adapted from Shyn, TWand CJSweeny, Phys. Rev., 47, 2919, 1993
First Three Vibrational Peaks of O3
Property Elastic Peak
ν = 1 (meV)
ν = 2 (meV)
ν = 3 (meV)
Threshold 137 256 378
Peak energy 0 130 260 380
Composition of successive peaks
I peak II peak III peak
60% ν1 25% 2ν1 60% 2ν1 15% ν2 20% ν1 + ν3 15% ν1 + ν3 30% ν3 30% 2ν3 30% 2ν3
Differential cross section (10−22 m2/sr)
66 100 38 16
Source:Adapted from Davies, JAet al, J. Phys. B: At. Mol. Opt. Phys, 26, L767, 1993
TABLE 35.6 Excitation Cross Sections Energy (eV) 7 10 15 20
Qex (10−22 m2) 69 88 95 60
Ozone (O3)90
70 Hartley band
Excitation cross section
Q e x(
10 –2
2 m 2 )
50 0 5 10
Energy (eV) 15 20
60 100
1000 eV 2000 6000 eV
Differential scattering
(1 0-
2 )/ sr
0.1
0.01
(1 0-
2 )/ sr
0.1
0.001
0.01
(1 0-
2 )/ sr
0.1
0.001
0.01
0 40 80 Angle (°)
120 160
0 40 80 Angle (°)
120 160 0 40 80 Angle (°)
120 160
300 600
Ozone (O3)
(1 0-
2 )/ sr
0.1
0.01 0 40 80
Angle (°) 120 160
Reactions 351a through 351c are dssociative attachment and Reaction 351d is autodetachment Electron affinity of O3 is 2108 eV
Three resonant regions are observed centered around 14, 35, and 75 eVThe principal features are shown in Table 359 (Rangwala et al, 1999)
Table 3510 and Figures 357 and 358 show the attachment cross sections for the formation of O− and O2
− ions, tabulated by Itikawa (2003) on the basis of measurements of Senn et al (1999)
TABLE 35.8 Total and Partial Ionization Cross Sections for O3
Newson et al. (1995) Siegel (1982)
Energy (eV)
(O3)+ (10−21 m2)
(O2)+ (10−21 m2)
(O)+ (10−21 m2)
Total (10−21 m2)
Total (10−21 m2)
22 196 24 213 26 355 28 1017 30 1217 32 1386 34 1482 36 1584 38 1702 40 808 639 100 1547 1795 45 812 653 141 1606 1934 50 872 742 184 1798 2068 55 917 781 215 1913 2169 60 982 879 259 212 2246 65 997 871 276 2144 2306 70 1023 963 305 2291 2348 75 1025 934 324 2283 2376 80 1058 992 349 2399 2394 85 105 967 356 2373 2404 90 1057 98 373 241 2407 95 1058 968 377 2403 2393 100 106 99 378 2428 2355 152 1007 866 365 2238 200 959 844 334 2137 259 911 827 314 2052 306 854 761 281 1896 355 797 700 26 1757 413 757 679 25 1686 462 682 565 221 1468 509 69 649 231 157
Note:Data from Siegel (1982) are digitized and interpolated
Q i (1
m 2 )
0 0 100 200
Energy (eV) 300 400 500
Total
Ionization cross section ozone (O3)
Newson (1995) Siegel (1982)
15(a)
(b)
Partial ionization cross section ozone (O3)
Partial ionization cross section ozone (O3)
Partial ionization cross section ozone (O3)
Newson (1995)
O+
Siegel (1982)
Newson (1995) Siegel (1982)
Newson (1995) Siegel (1982)
Q i (1
m 2 )
Q i (1
m 2 )
(c) 10
Q i (1
m 2 )
0 100 200 Energy (eV)
300 400 500
0 100 200 Energy (eV)
300 400 500
0 100 200 Energy (eV)
300 400 500
Energy Loss Spectrum State Energy (eV) Reference
486 Mason et al (1996) 1B2 489 Johnstone et al (1992)
485 Molina and Molina20 (1986) 725 Mason et al (1996)
1B1 704 Johnstone et al (1992) 880 Mason et al (1996)
3A1 876 Johnstone et al (1992) 931 Mason et al (1996)
1B2 921 Johnstone et al (1992) 1A1 939 Johnstone et al (1992)
1021 Mason et al (1996) 1B2 1017 Johnstone et al (1992)
1059 Mason et al (1996) 1B1 1059 Johnstone et al (1992)
111 Mason et al (1996) 1A1 1107 Johnstone et al (1992)
1142 Johnstone et al (1992) 1226 Johnstone et al (1992)
Principal Features of ACross S
Energy (eV) Feature O− Cross Section
(10−22 m2) O2− Cross Section
(10−22 m2)
0 Peak 140
12 Peak — 168
14 Peak 370 —
30 Shoulder 87 —
65 Gradual slope 30 —
73 Peak — 04
75 Peak 60
Source:Adapted from Rangwala, SAet al, J. Phys. B: At. Mol. Opt. Phys., 32, 3795, 1999
Note:Values at zero energy is from Senn et al (1999)
TABLE 35.10 Attachment Cross Sections for O3 Energy (eV) O− (10−22 m2) O2− (10−22 m2) Total (10−22 m2)
00 806 200 1006
01 750 222 972
02 692 180 872
03 820 200 1020
04 1001 216 1217
05 1194 306 1500
06 1469 402 1871
07 1870 624 2494
08 2087 864 2951
09 2488 1188 3676
10 2824 1326 4150
11 3158 1500 4658
12 3621 1680 5301
13 3703 1548 5251
14 3721 1416 5137
15 3647 1152 4799
16 3467 930 4397
17 3129 696 3825
18 2797 468 3265
19 2378 396 2774
20 2111 228 2339
21 1905 186 2091
22 1599 156 1755
23 1330 120 1450
24 1151 060 1211
25 1125 069 1194
26 959 030 989
27 893 024 917
28 863 024 887
29 918 018 936
30 847 018 865
31 894 018 912
32 825 019 844
33 820 020 840
Cross Sections for O3 Energy (eV) O− (10−22 m2) O2− (10−22 m2) Total (10−22 m2)
34 785 021 806
35 766 020 786
36 686 020 706
37 662 019 681
38 612 018 630
39 629 018 647
40 553 017 570
41 462 016 478
42 400 016 416
43 385 016 401
44 284 016 300
45 277 015 292
46 234 014 248
47 210 014 224
48 200 014 214
49 177 014 191
50 108 014 122
51 131 014 145
52 103 014 117
53 072 015 087
54 059 016 075
55 076 017 093
56 106 017 123
57 127 019 146
58 139 020 159
59 137 021 158
60 167 022 189
61 182 024 206
62 212 025 237
63 231 027 258
64 256 028 284
65 279 030 309
66 307 031 338
67 392 032 424
68 372 032 404
69 436 033 469
70 498 034 532
71 556 034 590
72 571 034 605
73 601 033 634
74 631 033 664
75 571 032 603
76 608 031 639
77 586 030 616
78 503 029 532
79 535 029 564
80 530 026 556
81 407 025 432
82 389 023 412
83 358 022 380
84 258 020 278
85 246 018 264
86 181 016 197
87 137 014 151
88 135 013 148
89 101 011 112
continued
Thermal rate coefficient at 300 K for two-body electron attachment is 9 × 10−18 m3/s (Stelman et al, 1972) Attachment rate coefficients measured by the beam technique are shown in Figure 359 (Skalny et al, 1996)
Attachment Cross SO3 Energy (eV) O− (10−22 m2) O2− (10−22 m2) Total (10−22 m2)
90 079 010 089
91 060 008 068
92 043 007 050
93 038 006 044
94 031 006 037
95 019 005 024
96 042 005 047
97 031 005 036
98 019 005 024
99 016 004 020
100 017 004 021
Note: Tabulated values are from Itikawa (2003) based on the measurements of Senn et al (1999)
Attachment cross section ozone (O3)
Q a (1
m 2 )
1.0 0.1 1
Energy (eV) 10
( ) OO2
Total Attachment cross section
ozone (O3)
O-
Q a (1
m 2 )
0 0 2 4
Energy (eV) 6 8 10
O/O310
10-10
10-11
10-12
β( cm
)
10-10
10-11
10-12
10-13
10 –14 1000 10,000
Te (K)
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