MONOCHROMATOR FOR THE VACUUM ULTRAVIOLET II. HIGH RESOLUTION MONOCHROMATOR (APPLICATION OF OFF-PLANE EAGLE MOUNTING)
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Date
1959
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Ohio State University
Abstract
The possibility of constructing a high resolution monochromator for the vacuum ultraviolet is examined; the off-plane Eagle mounting is chosen as the most suitable one. Considering all optical restrictions arising from an off-plane setting, the resolving power of the grating in the off-plane Eagle mounting is calculated numerically for the following conditions; 3-meter concave grating $(5 \times 3^{\prime}$ ruled area) with 30,000 lines/inch or 15,000 lines/inch, 0 to 5800 \AA in the first order, and distance of the entrance slit from the Rowland plane 6 cm. In order to have compactness, a link mechanism introduced by Bair et al. is chosen in the scanning system and a tentative design of a 3-meter vacuum monochromator Will be shown schematically. Therefore, it is recommended to use the off-plane Eagle mounting in constructing a high resolution monochromator for the vacuum ultraviolet.
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Author Institution: Laboratory of Molecular Structure and Spectra, Department of Physics, The University of Chicago