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The instrument (polychromator) described observes time-dependent spectral-line profiles by simultaneous measurement at nine different wavelengths of light intensity as a function of time. A cylindrical lens magnifies the dispersion of a Jarrell-Ash Model 82000 Ebert Monochromator and forms an image on a light-pipe holder. Light pipes transfer light from various sections of the image—i. e., different wavelengths—to photomultiplier tubes, and the responses are displayed on oscilloscopes. The instrument has been used to look at total wavelength spans of 15 Å and 20 Å.
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Spillman et al. (1963) studied this question.
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