Abstract

The strengths and self-broadening parameters for lines in the R branch of the ν3 fundamental of N2O have been measured for gas samples at 300 and 204 K. The results indicate that the collision cross sections at the two temperatures are nearly the same. Differences between values for total band strength of ν3 based on the present high-resolution measurements and values based on earlier low-resolution studies are discussed. The results obtained for self-broadening parameters are in excellent agreement with recent results of Toth and Margolis.

© 1973 Optical Society of America

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  1. L. D. Tubbs and D. Williams, J. Opt. Soc. Am. 62, 284 (1972).
    [Crossref]
  2. L. D. Tubbs and D. Williams, J. Opt. Soc. Am. 62, 423 (1972).
    [Crossref]
  3. A. M. Thorndike, A. J. Wells, and E. B. Wilson, J. Chem. Phys. 15, 157 (1947); D. F. Eggers and B. L. Crawford, J. Chem. Phys. 19, 1554 (1951); H. J. Calloman, D. C. McKean, and H. W. Thompson, Proc. R. Soc. A 208, 332 (1951); F. Watari and S. Kinumaki, Sci. Rep. Res. Inst. Tohoku Univ. 13, 48 (1961); D. E. Burch and D. Williams, Appl. Opt. 1, 473 (1962); Ya. I. Gerlovin and I. N. Orlova, Opt. Spektrosk. 16, 17 (1964) [Opt. Spectrosc. 16, 29 (1964)]; T. F. Hunter, J. Chem. Soc. A 374 (1967); G. D. Yale, D. L. Ford, and J. H. Shaw, Appl. Opt. 7, 695 (1968).
    [Crossref] [PubMed]
  4. J. E. Lowder, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
    [Crossref]
  5. R. A. Toth, J. Mol. Spectrosc. 40, 588 (1971).
    [Crossref]
  6. R. A. Toth, J. Mol. Spectrosc. 40, 605 (1971).
    [Crossref]
  7. L. D. Gray Young, J. Quant. Spectrosc. Radiat. Transfer 11, 1265 (1971).
    [Crossref]
  8. J. S. Margolis, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
    [Crossref]
  9. G. D. T. Tejwani and P. Varanasi, J. Quant. Spectrosc. Radiat. Transfer 11, 1659 (1971).
    [Crossref]
  10. Mikihiko Hirono, J. Phys. Soc. Jap. 26, 1479 (1969).
    [Crossref]

1972 (4)

J. E. Lowder, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
[Crossref]

L. D. Tubbs and D. Williams, J. Opt. Soc. Am. 62, 284 (1972).
[Crossref]

L. D. Tubbs and D. Williams, J. Opt. Soc. Am. 62, 423 (1972).
[Crossref]

J. S. Margolis, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
[Crossref]

1971 (4)

G. D. T. Tejwani and P. Varanasi, J. Quant. Spectrosc. Radiat. Transfer 11, 1659 (1971).
[Crossref]

R. A. Toth, J. Mol. Spectrosc. 40, 588 (1971).
[Crossref]

R. A. Toth, J. Mol. Spectrosc. 40, 605 (1971).
[Crossref]

L. D. Gray Young, J. Quant. Spectrosc. Radiat. Transfer 11, 1265 (1971).
[Crossref]

1969 (1)

Mikihiko Hirono, J. Phys. Soc. Jap. 26, 1479 (1969).
[Crossref]

1947 (1)

A. M. Thorndike, A. J. Wells, and E. B. Wilson, J. Chem. Phys. 15, 157 (1947); D. F. Eggers and B. L. Crawford, J. Chem. Phys. 19, 1554 (1951); H. J. Calloman, D. C. McKean, and H. W. Thompson, Proc. R. Soc. A 208, 332 (1951); F. Watari and S. Kinumaki, Sci. Rep. Res. Inst. Tohoku Univ. 13, 48 (1961); D. E. Burch and D. Williams, Appl. Opt. 1, 473 (1962); Ya. I. Gerlovin and I. N. Orlova, Opt. Spektrosk. 16, 17 (1964) [Opt. Spectrosc. 16, 29 (1964)]; T. F. Hunter, J. Chem. Soc. A 374 (1967); G. D. Yale, D. L. Ford, and J. H. Shaw, Appl. Opt. 7, 695 (1968).
[Crossref] [PubMed]

Gray Young, L. D.

L. D. Gray Young, J. Quant. Spectrosc. Radiat. Transfer 11, 1265 (1971).
[Crossref]

Hirono, Mikihiko

Mikihiko Hirono, J. Phys. Soc. Jap. 26, 1479 (1969).
[Crossref]

Lowder, J. E.

J. E. Lowder, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
[Crossref]

Margolis, J. S.

J. S. Margolis, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
[Crossref]

Tejwani, G. D. T.

G. D. T. Tejwani and P. Varanasi, J. Quant. Spectrosc. Radiat. Transfer 11, 1659 (1971).
[Crossref]

Thorndike, A. M.

A. M. Thorndike, A. J. Wells, and E. B. Wilson, J. Chem. Phys. 15, 157 (1947); D. F. Eggers and B. L. Crawford, J. Chem. Phys. 19, 1554 (1951); H. J. Calloman, D. C. McKean, and H. W. Thompson, Proc. R. Soc. A 208, 332 (1951); F. Watari and S. Kinumaki, Sci. Rep. Res. Inst. Tohoku Univ. 13, 48 (1961); D. E. Burch and D. Williams, Appl. Opt. 1, 473 (1962); Ya. I. Gerlovin and I. N. Orlova, Opt. Spektrosk. 16, 17 (1964) [Opt. Spectrosc. 16, 29 (1964)]; T. F. Hunter, J. Chem. Soc. A 374 (1967); G. D. Yale, D. L. Ford, and J. H. Shaw, Appl. Opt. 7, 695 (1968).
[Crossref] [PubMed]

Toth, R. A.

R. A. Toth, J. Mol. Spectrosc. 40, 588 (1971).
[Crossref]

R. A. Toth, J. Mol. Spectrosc. 40, 605 (1971).
[Crossref]

Tubbs, L. D.

Varanasi, P.

G. D. T. Tejwani and P. Varanasi, J. Quant. Spectrosc. Radiat. Transfer 11, 1659 (1971).
[Crossref]

Wells, A. J.

A. M. Thorndike, A. J. Wells, and E. B. Wilson, J. Chem. Phys. 15, 157 (1947); D. F. Eggers and B. L. Crawford, J. Chem. Phys. 19, 1554 (1951); H. J. Calloman, D. C. McKean, and H. W. Thompson, Proc. R. Soc. A 208, 332 (1951); F. Watari and S. Kinumaki, Sci. Rep. Res. Inst. Tohoku Univ. 13, 48 (1961); D. E. Burch and D. Williams, Appl. Opt. 1, 473 (1962); Ya. I. Gerlovin and I. N. Orlova, Opt. Spektrosk. 16, 17 (1964) [Opt. Spectrosc. 16, 29 (1964)]; T. F. Hunter, J. Chem. Soc. A 374 (1967); G. D. Yale, D. L. Ford, and J. H. Shaw, Appl. Opt. 7, 695 (1968).
[Crossref] [PubMed]

Williams, D.

Wilson, E. B.

A. M. Thorndike, A. J. Wells, and E. B. Wilson, J. Chem. Phys. 15, 157 (1947); D. F. Eggers and B. L. Crawford, J. Chem. Phys. 19, 1554 (1951); H. J. Calloman, D. C. McKean, and H. W. Thompson, Proc. R. Soc. A 208, 332 (1951); F. Watari and S. Kinumaki, Sci. Rep. Res. Inst. Tohoku Univ. 13, 48 (1961); D. E. Burch and D. Williams, Appl. Opt. 1, 473 (1962); Ya. I. Gerlovin and I. N. Orlova, Opt. Spektrosk. 16, 17 (1964) [Opt. Spectrosc. 16, 29 (1964)]; T. F. Hunter, J. Chem. Soc. A 374 (1967); G. D. Yale, D. L. Ford, and J. H. Shaw, Appl. Opt. 7, 695 (1968).
[Crossref] [PubMed]

J. Chem. Phys. (1)

A. M. Thorndike, A. J. Wells, and E. B. Wilson, J. Chem. Phys. 15, 157 (1947); D. F. Eggers and B. L. Crawford, J. Chem. Phys. 19, 1554 (1951); H. J. Calloman, D. C. McKean, and H. W. Thompson, Proc. R. Soc. A 208, 332 (1951); F. Watari and S. Kinumaki, Sci. Rep. Res. Inst. Tohoku Univ. 13, 48 (1961); D. E. Burch and D. Williams, Appl. Opt. 1, 473 (1962); Ya. I. Gerlovin and I. N. Orlova, Opt. Spektrosk. 16, 17 (1964) [Opt. Spectrosc. 16, 29 (1964)]; T. F. Hunter, J. Chem. Soc. A 374 (1967); G. D. Yale, D. L. Ford, and J. H. Shaw, Appl. Opt. 7, 695 (1968).
[Crossref] [PubMed]

J. Mol. Spectrosc. (2)

R. A. Toth, J. Mol. Spectrosc. 40, 588 (1971).
[Crossref]

R. A. Toth, J. Mol. Spectrosc. 40, 605 (1971).
[Crossref]

J. Opt. Soc. Am. (2)

J. Phys. Soc. Jap. (1)

Mikihiko Hirono, J. Phys. Soc. Jap. 26, 1479 (1969).
[Crossref]

J. Quant. Spectrosc. Radiat. Transfer (4)

J. E. Lowder, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
[Crossref]

L. D. Gray Young, J. Quant. Spectrosc. Radiat. Transfer 11, 1265 (1971).
[Crossref]

J. S. Margolis, J. Quant. Spectrosc. Radiat. Transfer 12, 751 (1972).
[Crossref]

G. D. T. Tejwani and P. Varanasi, J. Quant. Spectrosc. Radiat. Transfer 11, 1659 (1971).
[Crossref]

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Figures (7)

Fig. 1
Fig. 1

Recorder tracing of the N2O absorption lines in the vicinity of the ν3 fundamental. Some rotational lines of the P and R branches of the fundamental band are indicated below the tracing, whereas some lines of the P and R branches of the overlapping hot band 0110–0111 are indicated above the tracing.

Fig. 2
Fig. 2

Measured values of line strength in units of cm−1/(atm cm)STP as a function of rotational line number m for some lines in the ν3 fundamental at 302 K, including contributions from the overlapping hot band, are indicated by the circles. Calculated values of line strength for the ν3 fundamental are indicated by triangles.

Fig. 3
Fig. 3

Measured values of line strength in units of cm−1/(atm cm)STP as a function of rotational line number m for some lines of the ν3 fundamental band of N2O at 204 K are indicated by circles. Calculated values of line strength for the same band are represented by triangles.

Fig. 4
Fig. 4

Measured values of line strength in units of cm−1/(atm cm)STP as a function of rotational line number m for some lines in the R branch of the ν1 + ν3 combination band at 296 K are indicated by circles. Calculated values of line strength for the same band are represented by triangles.

Fig. 5
Fig. 5

Measured values of collisional-broadening parameters γ0 in units of cm−1/atm as a function of rotational line number m for some lines in the R branch of the ν3 fundamental at 302 K are indicated by circles. Some measured collision-broadening parameters for the ν1 + ν3 combination band at 296 K are indicated by the squares.

Fig. 6
Fig. 6

Measured values of collision-broadening parameters γ0 in units of cm−1/atm as a function of rotational line number m from the present investigation of the ν3 fundamental are indicated by solid circles; values measured by Toth in the 2ν2 + ν3 band by open circles; values measured by Margolis for the 2ν3 overtone by open squares; and values calculated by Varanasi for N2O rotational lines by solid squares.

Fig. 7
Fig. 7

Measured values of collision-broadening parameters γ0 in units of cm−1/atm as a function of rotational line number m for some lines in the ν3 fundamental at temperatures of 204 and 302 K.

Equations (2)

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S ( m ) = 1 ( 273 K ) k · 8 π 3 3 h c Q ( T ) ν m | m | | R | 2 e E ( m ) / k T ,
γ = f c / 2 π c = ( n σ υ ¯ ) / 2 π c = n σ ( 2 k T / μ ) 1 2 / 2 π c ,