Abstract

A multiple traversal gas absorption cell has been built for the measurement of strong and weak absorption bands in the same sample. By means of external adjustments its path length may be varied from ten centimeters to one meter, ten meters and intermediate values, with transmissions of 80%, 55%, and 32%, respectively. It has a volume of six liters and may be pressurized to 150 psi.

© 1958 Optical Society of America

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References

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  1. J. U. White, J. Opt. Soc. Am. 32, 285 (1942).
    [CrossRef]
  2. H. J. Bernstein and G. J. Herzberg, J. Chem. Phys. 16, 30 (1948).
    [CrossRef]
  3. R. G. Pilston and J. U. White, J. Opt. Soc. Am. 44, 572 (1954).
    [CrossRef]
  4. White, Alpert, and Weiner, Rev. Sci. Instr. 29, 511 (1958).
    [CrossRef]

1958 (1)

White, Alpert, and Weiner, Rev. Sci. Instr. 29, 511 (1958).
[CrossRef]

1954 (1)

1948 (1)

H. J. Bernstein and G. J. Herzberg, J. Chem. Phys. 16, 30 (1948).
[CrossRef]

1942 (1)

Alpert,

White, Alpert, and Weiner, Rev. Sci. Instr. 29, 511 (1958).
[CrossRef]

Bernstein, H. J.

H. J. Bernstein and G. J. Herzberg, J. Chem. Phys. 16, 30 (1948).
[CrossRef]

Herzberg, G. J.

H. J. Bernstein and G. J. Herzberg, J. Chem. Phys. 16, 30 (1948).
[CrossRef]

Pilston, R. G.

Weiner,

White, Alpert, and Weiner, Rev. Sci. Instr. 29, 511 (1958).
[CrossRef]

White,

White, Alpert, and Weiner, Rev. Sci. Instr. 29, 511 (1958).
[CrossRef]

White, J. U.

J. Chem. Phys. (1)

H. J. Bernstein and G. J. Herzberg, J. Chem. Phys. 16, 30 (1948).
[CrossRef]

J. Opt. Soc. Am. (2)

Rev. Sci. Instr. (1)

White, Alpert, and Weiner, Rev. Sci. Instr. 29, 511 (1958).
[CrossRef]

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Figures (3)

Fig. 1
Fig. 1

Optical layout; 10-cm path goes straight through; solid lines show one-meter path; dashed lines show part of 10-meter path.

Fig. 2
Fig. 2

Photograph of cell showing adjustments and mounting clips.

Fig. 3
Fig. 3

Spectra of natural gas with paths of 10 centimeters; one meter and 10 meters. The top spectrum is for air in the 10-cm path. The bottom two curves are for 10 meters of air and natural gas with three times the gain.

Tables (1)

Tables Icon

Table I Transmission of empty cell exclusive of window losses.