The absorption by ozone of the P(36), P(38), and P(40) CO2 9.4-μm laser lines has been studied. It was found that the P(40) line was within 1.7 ± 1.3 MHz of the 119,2 − 129,3ν3 ozone line. In addition the intensity of the 119,2 − 129,3 ozone line was found to be 0.108 cm−1 (atm cm)−1 at 298 K, and it was located at 1027.3825 ± 0.0009 cm−1. The ν3 ozone band intensity was determined to be 326 ± 27 cm−1 (atm cm)−1 at 298 K.
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O3 Rotational Lines (ν3 Band) in the Vicinity of the P(36), P(38), and P(40) CO2 9.4-μm Laser Linesa
9.4-μm
ν3, O3 band
Line
Wavenumber
Level
Wavenumber
Line intensity cm−1 (atm cm)−1, 298 K
Upper
Lower
145,10
155,11
1027.0954
0.576
151,14
161,15
1027.1116
0.916
128,5
138,6
1027.1992
0.218
282,27
282,26
1027.2919
0.004
P(40)
1027.3825
119,2
129,3
1027.3641
0.116
1010,1
1110,2
1027.4401
0.033
150,15
160,16
1027.4689
0.948
144,11
154,12
1027.5286
0.690
136,7
146,8
1027.5640
0.445
108,3
118,4
1029.1592
0.155
399,30
399,31
1029.2431
0.005
3610,27
3610,26
1029.2805
0.007
99,0
109,1
1029.3140
0.046
418,33
418,34
1029.4036
0.003
P(38)
1029.4423
130,13
140,14
1029.4450
0.940
124,9
134,10
1029.5165
0.656
116,5
126,6
1029.5341
0.391
389,30
389,29
1029.6591
0.006
3110,21
3110,22
1031.1749
0.017
349,26
349,25
1031.2412
0.012
110,11
120,12
1031.3722
0.899
181,18
181,17
1031.3777
0.006
406,35
406,34
1031.4585
0.004
96,3
106,4
1031.4590
0.306
104,7
114,8
1031.4601
0.590
P(36)
1031.4775
368,29
368,28
1031.4618
0.009
387,32
387,31
1031.5291
0.006
3010,21
3010,20
1031.5293
0.020
339,24
339,25
1031.6157
0.014
405,36
405,35
1031.6928
0.003
87,2
97,3
1031.7846
0.146
The CO2 line positions are from Chang5; the O3 line positions are from Clough and Kneizys2,3; and the line intensities are based on McCaa’s and Shaw’s4 value for the ν3 band intensity.
Table II
Comparison Between the Transmittances Assuming Doppler and Voigt Line Profiles at Pressures Less than 1 Torr for the 119,2–129,3 Ozone Line at 1027.364 cm−1.a
p (Torr)
(ν − ν0) = 6 MHz
(ν − ν0) = 15 MHz
(ν − ν0) = 30 MHz
(ν − ν0) = 60 MHz
Doppler
Voigt
Doppler
Voigt
Doppler
Voigt
Doppler
Voigt
0.05
0.671
0.677
0.715
0.720
0.835
0.837
0.985
0.985
0.10
0.451
0.460
0.512
0.520
0.697
0.701
0.970
0.968
0.20
0.203
0.216
0.262
0.274
0.486
0.492
0.941
0.932
0.30
0.092
0.103
0.134
0.145
0.339
0.345
0.913
0.890
0.40
0.041
0.050
0.069
0.079
0.237
0.242
0.886
0.847
The collisional broadened half-width was taken as 0.1 cm−1 (298 K, 1 atm).
The separation between the P(40) line of the 9.4-μm CO2 band and the 119,2–129,3ν3 O3 line is 1.7 ± 1.3 MHz (at the 99% confidence level).
Clough and Kneizys.2,3
Clough and Kneizys calculations normalized to McCaa’s and Shaw’s4 band intensity.
McCaa’s and Shaw’s4 band intensity.
This work.
Tables (3)
Table I
O3 Rotational Lines (ν3 Band) in the Vicinity of the P(36), P(38), and P(40) CO2 9.4-μm Laser Linesa
9.4-μm
ν3, O3 band
Line
Wavenumber
Level
Wavenumber
Line intensity cm−1 (atm cm)−1, 298 K
Upper
Lower
145,10
155,11
1027.0954
0.576
151,14
161,15
1027.1116
0.916
128,5
138,6
1027.1992
0.218
282,27
282,26
1027.2919
0.004
P(40)
1027.3825
119,2
129,3
1027.3641
0.116
1010,1
1110,2
1027.4401
0.033
150,15
160,16
1027.4689
0.948
144,11
154,12
1027.5286
0.690
136,7
146,8
1027.5640
0.445
108,3
118,4
1029.1592
0.155
399,30
399,31
1029.2431
0.005
3610,27
3610,26
1029.2805
0.007
99,0
109,1
1029.3140
0.046
418,33
418,34
1029.4036
0.003
P(38)
1029.4423
130,13
140,14
1029.4450
0.940
124,9
134,10
1029.5165
0.656
116,5
126,6
1029.5341
0.391
389,30
389,29
1029.6591
0.006
3110,21
3110,22
1031.1749
0.017
349,26
349,25
1031.2412
0.012
110,11
120,12
1031.3722
0.899
181,18
181,17
1031.3777
0.006
406,35
406,34
1031.4585
0.004
96,3
106,4
1031.4590
0.306
104,7
114,8
1031.4601
0.590
P(36)
1031.4775
368,29
368,28
1031.4618
0.009
387,32
387,31
1031.5291
0.006
3010,21
3010,20
1031.5293
0.020
339,24
339,25
1031.6157
0.014
405,36
405,35
1031.6928
0.003
87,2
97,3
1031.7846
0.146
The CO2 line positions are from Chang5; the O3 line positions are from Clough and Kneizys2,3; and the line intensities are based on McCaa’s and Shaw’s4 value for the ν3 band intensity.
Table II
Comparison Between the Transmittances Assuming Doppler and Voigt Line Profiles at Pressures Less than 1 Torr for the 119,2–129,3 Ozone Line at 1027.364 cm−1.a
p (Torr)
(ν − ν0) = 6 MHz
(ν − ν0) = 15 MHz
(ν − ν0) = 30 MHz
(ν − ν0) = 60 MHz
Doppler
Voigt
Doppler
Voigt
Doppler
Voigt
Doppler
Voigt
0.05
0.671
0.677
0.715
0.720
0.835
0.837
0.985
0.985
0.10
0.451
0.460
0.512
0.520
0.697
0.701
0.970
0.968
0.20
0.203
0.216
0.262
0.274
0.486
0.492
0.941
0.932
0.30
0.092
0.103
0.134
0.145
0.339
0.345
0.913
0.890
0.40
0.041
0.050
0.069
0.079
0.237
0.242
0.886
0.847
The collisional broadened half-width was taken as 0.1 cm−1 (298 K, 1 atm).
The separation between the P(40) line of the 9.4-μm CO2 band and the 119,2–129,3ν3 O3 line is 1.7 ± 1.3 MHz (at the 99% confidence level).
Clough and Kneizys.2,3
Clough and Kneizys calculations normalized to McCaa’s and Shaw’s4 band intensity.
McCaa’s and Shaw’s4 band intensity.
This work.
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