Abstract

Partial polarization of the Raman radiation combined with variations in the transmittance of the mono-chromator for radiation having different directions of polarization will lead to errors in the recorded intensity. The magnitude of these errors may vary with the age of the Raman source and with changes in the geometrical relations between the sample and the source. A properly oriented mica quarter-wave plate will reduce these errors to a negligible value in a Cary model 81 Raman spectrophotometer.

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  1. E. B. Wilson, Jr., J. C. Decius, and P. C. Cross, Molecular Vibrations (McGraw-Hill Book Company, Inc., New York, 1955) Sec. 3–6.
  2. For convenience in the subsequent discussion, the polarization sensitivity of the photometer will be considered as included in the polarization sensitivity of the transmittance of the mono-chromator.
  3. All frequencies mentioned in this report refer to Raman shifts from the 4358.3-A exciting line.
  4. R. F. Stamm, Anal. Chem. 17, 318 (1945).
  5. R. W. Ditchburn, Light (Interscience Publishers, Inc., New York, 1953), 1st ed., p. 369.
  6. Suggested by A. S. Makas (Polaroid Corporation).

Cross, P. C.

E. B. Wilson, Jr., J. C. Decius, and P. C. Cross, Molecular Vibrations (McGraw-Hill Book Company, Inc., New York, 1955) Sec. 3–6.

Decius, J. C.

E. B. Wilson, Jr., J. C. Decius, and P. C. Cross, Molecular Vibrations (McGraw-Hill Book Company, Inc., New York, 1955) Sec. 3–6.

Ditchburn, R. W.

R. W. Ditchburn, Light (Interscience Publishers, Inc., New York, 1953), 1st ed., p. 369.

Makas, A. S.

Suggested by A. S. Makas (Polaroid Corporation).

Stamm, R. F.

R. F. Stamm, Anal. Chem. 17, 318 (1945).

Wilson, Jr., E. B.

E. B. Wilson, Jr., J. C. Decius, and P. C. Cross, Molecular Vibrations (McGraw-Hill Book Company, Inc., New York, 1955) Sec. 3–6.

Other (6)

E. B. Wilson, Jr., J. C. Decius, and P. C. Cross, Molecular Vibrations (McGraw-Hill Book Company, Inc., New York, 1955) Sec. 3–6.

For convenience in the subsequent discussion, the polarization sensitivity of the photometer will be considered as included in the polarization sensitivity of the transmittance of the mono-chromator.

All frequencies mentioned in this report refer to Raman shifts from the 4358.3-A exciting line.

R. F. Stamm, Anal. Chem. 17, 318 (1945).

R. W. Ditchburn, Light (Interscience Publishers, Inc., New York, 1953), 1st ed., p. 369.

Suggested by A. S. Makas (Polaroid Corporation).

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