Abstract

The equivalent Raman scattering cross section of NO (nitric oxide) referred to O2 (oxygen) and N2 (nitrogen) was obtained experimentally. Furthermore, it is shown that it is possible, using the Raman effect, not only to detect small concentrations of nitric oxide in water saturated nitrogen but also to obtain quantitative measurements of NO independent of the presence of other species.

© 1972 Optical Society of America

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References

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  1. G. F. Widhopf, S. Lederman, “Specie Concentration Measurements Utilizing Raman Scattering of a Laser Beam,” Polytechnic Institute of Brooklyn, PIBAL Rept. 69-46, AD 701343 (1969); also, AIAA J. 9, 309 (1971).
  2. S. Lederman, “Molecular Spectra and the Raman Effect. A Short Review,” Polytechnic Institute of Brooklyn, PIBAL Report 71–15, AD 728164 (1971).
  3. H. W. Schrötter, H. J. Bernstein, J. Mol. Spectrosc. 12, 1 (1964).
    [Crossref]
  4. W. V. Smith, P. Sorokin, The Laser (McGraw-Hill, New York, 1966).

1964 (1)

H. W. Schrötter, H. J. Bernstein, J. Mol. Spectrosc. 12, 1 (1964).
[Crossref]

Bernstein, H. J.

H. W. Schrötter, H. J. Bernstein, J. Mol. Spectrosc. 12, 1 (1964).
[Crossref]

Lederman, S.

G. F. Widhopf, S. Lederman, “Specie Concentration Measurements Utilizing Raman Scattering of a Laser Beam,” Polytechnic Institute of Brooklyn, PIBAL Rept. 69-46, AD 701343 (1969); also, AIAA J. 9, 309 (1971).

S. Lederman, “Molecular Spectra and the Raman Effect. A Short Review,” Polytechnic Institute of Brooklyn, PIBAL Report 71–15, AD 728164 (1971).

Schrötter, H. W.

H. W. Schrötter, H. J. Bernstein, J. Mol. Spectrosc. 12, 1 (1964).
[Crossref]

Smith, W. V.

W. V. Smith, P. Sorokin, The Laser (McGraw-Hill, New York, 1966).

Sorokin, P.

W. V. Smith, P. Sorokin, The Laser (McGraw-Hill, New York, 1966).

Widhopf, G. F.

G. F. Widhopf, S. Lederman, “Specie Concentration Measurements Utilizing Raman Scattering of a Laser Beam,” Polytechnic Institute of Brooklyn, PIBAL Rept. 69-46, AD 701343 (1969); also, AIAA J. 9, 309 (1971).

J. Mol. Spectrosc. (1)

H. W. Schrötter, H. J. Bernstein, J. Mol. Spectrosc. 12, 1 (1964).
[Crossref]

Other (3)

W. V. Smith, P. Sorokin, The Laser (McGraw-Hill, New York, 1966).

G. F. Widhopf, S. Lederman, “Specie Concentration Measurements Utilizing Raman Scattering of a Laser Beam,” Polytechnic Institute of Brooklyn, PIBAL Rept. 69-46, AD 701343 (1969); also, AIAA J. 9, 309 (1971).

S. Lederman, “Molecular Spectra and the Raman Effect. A Short Review,” Polytechnic Institute of Brooklyn, PIBAL Report 71–15, AD 728164 (1971).

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Figures (5)

Fig. 1
Fig. 1

Energy level diagram for the Raman and Rayleigh transitions.

Fig. 2
Fig. 2

Schematic of the experimental apparatus.

Fig. 3
Fig. 3

Measured Raman Stokes intensity of NO vs pressure normalized to the intensity at 50 Torr of NO and with input radiation (NO—nitric oxide).

Fig. 4
Fig. 4

Measured Raman Stokes intensity of nitric oxide in the presence of dry nitrogen.

Fig. 5
Fig. 5

Measured Raman Stokes intensity of NO in the presence of water. Saturated nitrogen vs NO partial pressure (NO—nitric oxide).

Tables (1)

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Table I Raman Shifts for Various Gases

Equations (2)

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I S , A = C 1 [ ( ν 0 ± ν ) 4 / ν ] N · C 2 · I 0 .
I S , A = σ S , A · N · I 0 · C 2

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