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An analysis of the absorption spectrum of S I in the region XX183()-90() resulted in the classification of more than 100 new lines, of which some, above the ( S ) first ionization limit, are strongly autoionized. Parameters are given for the autoionized lines and for the continuous photoionization cross-section of S i. In the experiment, atomic sulfur was produced by a flash-pyrolysis method, i.e., irradiating the sample with a strong flux of light from a discharge flash lamp. A Garton source provided the continuum.
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Giuseppe Tondello (1972) studied this question.
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