Abstract

The absorption coefficient of SO2 under atmospheric conditions was measured at twenty DF laser lines. Weak absorption (α* ≲ 0.003 cm−1 atm−1) was found for a few wavelengths around 3.7 μm. Only the P4(6) line at 3.9843 μm (ν = 2509.86 cm−1) is strongly absorbed [α* = (0.44 ± 0.01) cm−1 atm−1]. The pressure dependence of the P4(6) cross section was measured. Self-broadening and foreign-gas broadening coefficients are between 1.5 and 5 MHz/Torr, and the distance from the P4(6) DF line to the center of the nearest SO2 line is (0.0043 ± 0.0004) cm−1.

© 1980 Optical Society of America

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  10. A. S. Pine, M. Dang-Nhu, to be published in J. Mol. Spectrosc.
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1977 (3)

A. S. Pine, P. F. Moulton, J. Mol. Spectrosc. 64, 15 (1977).
[CrossRef]

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

C. H. Bair, F. Allario, Appl. Opt. 16, 97 (1977).
[CrossRef] [PubMed]

1976 (2)

1975 (2)

C. D. Hollowell, R. D. McLaughlin, J. A. Stokes, IEEE Trans. Nucl. Sci. NS-22, 835 (1975).
[CrossRef]

T. F. Deaton, D. A. Depatie, T. W. Walker, Appl. Phys. Lett. 26, 300 (1975).
[CrossRef]

1974 (1)

1972 (1)

E. D. Hinkley, A. R. Calawa, P. L. Kelley, S. A. Clough, J. Appl. Phys. 43, 3222 (1972).
[CrossRef]

1967 (1)

T. F. Deutsch, Appl. Phys. Lett. 10, 234 (1967).
[CrossRef]

1964 (1)

1953 (1)

R. D. Shelton, A. H. Nielsen, W. H. Fletcher, J. Chem. Phys. 21, 2178 (1953).
[CrossRef]

Allario, F.

Altmann, J.

J. Altmann, R. Baumgart, C. Weitkamp, to be published.

Bair, C. H.

Baumgart, R.

J. Altmann, R. Baumgart, C. Weitkamp, to be published.

Bruce, C. W.

Calawa, A. R.

E. D. Hinkley, A. R. Calawa, P. L. Kelley, S. A. Clough, J. Appl. Phys. 43, 3222 (1972).
[CrossRef]

Clough, S. A.

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

E. D. Hinkley, A. R. Calawa, P. L. Kelley, S. A. Clough, J. Appl. Phys. 43, 3222 (1972).
[CrossRef]

Dang-Nhu, M.

A. S. Pine, M. Dang-Nhu, to be published in J. Mol. Spectrosc.

Davies, R. W.

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

Deaton, T. F.

T. F. Deaton, D. A. Depatie, T. W. Walker, Appl. Phys. Lett. 26, 300 (1975).
[CrossRef]

Denault, G. C.

Depatie, D. A.

T. F. Deaton, D. A. Depatie, T. W. Walker, Appl. Phys. Lett. 26, 300 (1975).
[CrossRef]

Derzko, Z.

Deutsch, T. F.

T. F. Deutsch, Appl. Phys. Lett. 10, 234 (1967).
[CrossRef]

Dresselhaus, G.

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

Fletcher, W. H.

R. D. Shelton, A. H. Nielsen, W. H. Fletcher, J. Chem. Phys. 21, 2178 (1953).
[CrossRef]

Gürs, K.

K. Gürs, G. Schweizer, “Determination of Hydrocarbon Emissions of Refinery Flares Using the Method of Comparative Absorption Measurements by Means of Laser,” BMI-BMFT-DGMK Project 135, Subproject 135-04 (DGMK, Hamburg, 1978).

Heath, W.

W. Heath, Dissertation, Ohio State U. (1976).

Herriott, D.

Hinkley, E. D.

E. D. Hinkley, A. R. Calawa, P. L. Kelley, S. A. Clough, J. Appl. Phys. 43, 3222 (1972).
[CrossRef]

Hollowell, C. D.

C. D. Hollowell, R. D. McLaughlin, J. A. Stokes, IEEE Trans. Nucl. Sci. NS-22, 835 (1975).
[CrossRef]

Hurd, B. G.

Kelley, P. L.

E. D. Hinkley, A. R. Calawa, P. L. Kelley, S. A. Clough, J. Appl. Phys. 43, 3222 (1972).
[CrossRef]

Kogelnik, H.

Kompfner, R.

McLaughlin, R. D.

C. D. Hollowell, R. D. McLaughlin, J. A. Stokes, IEEE Trans. Nucl. Sci. NS-22, 835 (1975).
[CrossRef]

Mills, F. S.

F. S. Mills, Dissertation, Ohio State U., Columbus (1975).

Moulton, P. F.

A. S. Pine, P. F. Moulton, J. Mol. Spectrosc. 64, 15 (1977).
[CrossRef]

Nielsen, A. H.

R. D. Shelton, A. H. Nielsen, W. H. Fletcher, J. Chem. Phys. 21, 2178 (1953).
[CrossRef]

Palm, B.

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

Pine, A. S.

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

A. S. Pine, P. F. Moulton, J. Mol. Spectrosc. 64, 15 (1977).
[CrossRef]

A. S. Pine, M. Dang-Nhu, to be published in J. Mol. Spectrosc.

A. S. Pine, MIT Lincoln Laboratory; private communication.

Schweizer, G.

K. Gürs, G. Schweizer, “Determination of Hydrocarbon Emissions of Refinery Flares Using the Method of Comparative Absorption Measurements by Means of Laser,” BMI-BMFT-DGMK Project 135, Subproject 135-04 (DGMK, Hamburg, 1978).

Shelton, R. D.

R. D. Shelton, A. H. Nielsen, W. H. Fletcher, J. Chem. Phys. 21, 2178 (1953).
[CrossRef]

Sojka, B. Z.

Spencer, D. J.

Stokes, J. A.

C. D. Hollowell, R. D. McLaughlin, J. A. Stokes, IEEE Trans. Nucl. Sci. NS-22, 835 (1975).
[CrossRef]

Takimoto, H. H.

Walker, T. W.

T. F. Deaton, D. A. Depatie, T. W. Walker, Appl. Phys. Lett. 26, 300 (1975).
[CrossRef]

Watkins, W. R.

Weitkamp, C.

J. Altmann, R. Baumgart, C. Weitkamp, to be published.

White, K. O.

Appl. Opt. (5)

Appl. Phys. Lett. (2)

T. F. Deaton, D. A. Depatie, T. W. Walker, Appl. Phys. Lett. 26, 300 (1975).
[CrossRef]

T. F. Deutsch, Appl. Phys. Lett. 10, 234 (1967).
[CrossRef]

IEEE Trans. Nucl. Sci. (1)

C. D. Hollowell, R. D. McLaughlin, J. A. Stokes, IEEE Trans. Nucl. Sci. NS-22, 835 (1975).
[CrossRef]

J. Appl. Phys. (1)

E. D. Hinkley, A. R. Calawa, P. L. Kelley, S. A. Clough, J. Appl. Phys. 43, 3222 (1972).
[CrossRef]

J. Chem. Phys. (1)

R. D. Shelton, A. H. Nielsen, W. H. Fletcher, J. Chem. Phys. 21, 2178 (1953).
[CrossRef]

J. Mol. Spectrosc. (2)

A. S. Pine, P. F. Moulton, J. Mol. Spectrosc. 64, 15 (1977).
[CrossRef]

A. S. Pine, G. Dresselhaus, B. Palm, R. W. Davies, S. A. Clough, J. Mol. Spectrosc. 67, 386 (1977).
[CrossRef]

Other (6)

A. S. Pine, M. Dang-Nhu, to be published in J. Mol. Spectrosc.

A. S. Pine, MIT Lincoln Laboratory; private communication.

J. Altmann, R. Baumgart, C. Weitkamp, to be published.

W. Heath, Dissertation, Ohio State U. (1976).

F. S. Mills, Dissertation, Ohio State U., Columbus (1975).

K. Gürs, G. Schweizer, “Determination of Hydrocarbon Emissions of Refinery Flares Using the Method of Comparative Absorption Measurements by Means of Laser,” BMI-BMFT-DGMK Project 135, Subproject 135-04 (DGMK, Hamburg, 1978).

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Figures (3)

Fig. 1
Fig. 1

Experimental arrangement.

Fig. 2
Fig. 2

Part of the Doppler-limited SO2 absorption spectrum, from Refs. 911, and location of the P4(6) DF laser line with its uncertainty indicated, from Ref. 12.

Fig. 3
Fig. 3

Pressure dependence of the SO2 absorption at the DF P4(6) line: ○, SO2 self-broadening; +, 1.3-mbar SO2 broadened by N2. Solid curves correspond to fits using Voigt profiles, assuming the indicated SO2 line as the nearest neighbor. Optimum wave number distance varies between 0.0041 and 0.0047 cm−1.

Tables (3)

Tables Icon

Table I Specific Absorption of SO2 in N2 at DF Laser Wavelengths; ptotal = 1 bar, pSO₂ = 37.1 mbar[P4(6) line: 1.5-3 mbar]; Gas Temperature is 20°C

Tables Icon

Table II Specific Absorption of SO2 at DF Laser Wavelengths Around 3.7 μm; ptotal = pSO₂ = 320 mbar, Gas Temperature 20°C

Tables Icon

Table III SO2 Absorption Lines of the (ν1 + ν3) Band near the P4(6) DF Laser Line from Refs. 911

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