Depolarization Measurements on Raman Lines by an Easy, Accurate Method

Autor:	Forrest F. Cleveland, M. J. Murray
Rok vydání:	1939
Předmět:	Argon business.industry General Physics and Astronomy chemistry.chemical_element Depolarization Polarization (waves) Spectral line symbols.namesake Optics chemistry symbols Physical and Theoretical Chemistry Short exposure business Raman spectroscopy Spectrograph Electric vector
Zdroj:	The Journal of Chemical Physics. 7:396-400
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1750457
Popis:	The depolarization factors of Raman lines are determined by a method in which a Polaroid disk, so oriented that it passes light whose electric vector is horizontal, is placed between the Raman tube and the lens which condenses the scattered light on the slit of the spectrograph. Two exposures of equal duration are made, one with the arc below, the other with it at the side, of the horizontal Raman tube. The ratio of the intensities in the two exposures (depolarization factor) is determined by comparison with the lines of seven argon spectra produced by argon light of known intensity ratios. Important advantages of the method are the comparatively short exposure times and the elimination of errors due to the polarization characteristics of the spectrograph. Results for the depolarization factors of Raman lines obtained from a mixture of benzene and carbon tetrachloride are given and comparison with previous data for these compounds is made.
Databáze:	OpenAIRE
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