Abstract

Three procedures are described: a modified Pfund triple-pass absorption cell; an improved image slicer; and new achromatic, doublet lenses. Design parameters for prism dispersion for various prism angles—both simple and composite prisms—are displayed by graphs. The relationships of dispersion and transmission are useful in designing prism spectrometers, predispersion systems for grating spectrometers, and LN-2 cooled predispersion systems for use with helium-cooled detectors. In combination with a suitable chopper they provide instrumentation suited to a study of the validity of the Lorentz line shape.

© 1972 Optical Society of America

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